Reflection and absorption of sound (Item No.: P )
|
|
- Logan Parks
- 5 years ago
- Views:
Transcription
1 Teacher's/Lecturer's Sheet Reflection and absorption of sound (Item No.: P ) Curricular Relevance Area of Expertise: Physics Education Level: Age Topic: Acoustics Subtopic: Generation, propagation and perception of sound Experiment: Reflection and absorption of sound Difficulty Preparation Time Execution Time Recommended Group Size Easy 10 Minutes 10 Minutes 1 Student Additional Requirements: Experiment Variations: Microphone Pair of earphones Sheet of paper Piece of adhesive tape, approx. 5 cm PC Keywords: Task and equipment Information about teachers Additional information In acoustics, a distinction is made between sound insulation (sound reflection) and sound damping (sound absorption). Sound insulation is about the transmission of sound through a wall. Sound is optimally reflected on massive walls. In room acoustics, sound damping is important for the prevention of reverberation. In this case, the sound is absorbed (damped) by porous materials, e.g. wadding, felt, wood fibre materials, or glass and rock wool. For optimum solutions, often both methods are combined. The students work out the fundamental principles of sound insulation and sound damping based on several experiments. Notes concerning the execution of the experiments 1. For the experiments, a sequence of 8 sound pulses will be emitted. A sound pulse can be recorded at the push of a button. Figure 7 shows a measurement example of experiment 1. The sequence of the 8 sound pulses is programmed so that an individual pulse consists of a brief sinusoidal oscillation with a maximum relative amplitude of approximately 1 ms. The time difference between two pulses is approximately 100 ms so that usually only one pulse will be visible in the diagram. 2. For the evaluation of the experiments, the maximum of a pulse must be measured. The sound volume of the earphone and the sensitivity of the microphone have a very strong effect on the magnitude of the recorded signals, i.e. on the measured values of the relative amplitude. The values that are given in the tables are part of an example measurement. The actual measurements that are performed by the students can vary from these values to a considerable extent. The relationships between the measurements and the resulting conclusions, however, are the same. 3. In experiment 1, the sound pulse is considerably reduced when it passes through the CD case. This is why the ambient noise should be as low as possible during the measurement of this pulse. Otherwise, the variations of the baseline could impair the measurement of the signal. 4. In experiment 2, the students examine the sound damping effect of various different wall set-ups based on reflection measurements. Figure 8 shows a measurement example concerning the reflection on the CD case. The first pulse is the direct signal from the earphone, while the other three pulses originate from reflections (echoes) at the ends of the tube. Since the microphone is not positioned directly in front of the earphone but slightly behind it and also with a lateral offset, the first pulse will not be measured under the same conditions as the other pulses. Its maximum amplitude changes depending on the position of the microphone. Often, it is smaller than the echo. This is not important for the execution of the experiment, but it may lead to discussions. This is why the students worksheet describes a very precise arrangement of the earphone and microphone with which the first and second pulse of the reflection on the CD case are approximately identical.
2 Teacher's/Lecturer's Sheet 5. The "wall set-ups" in experiment 2 differ from each other in so far as felt is placed in front of a reflecting wall (in this case the CD case) in different shapes. A sound pulse is transmitted and reflected on this wall. A small echo indicates a good sound damping effect of the wall. The relative amplitudes of the first echoes (the second recorded pulse in Fig. 8) of the various different "wall" types will be compared. This means that the experiment conditions must be identical, i.e. the earphone, microphone, and glass tube should not be offset with regard to each other. A potential way of checking as to whether the set-up is unchanged is to measure the first pulse (direct signal from the earphone). It should be approximately identical in all of the partial experiments. Fig. 7: Time course of pulse Fig. 8: Pulse with three echos Note All of the measured values that are stated originate from an example measurement. The values that are measured by the student may vary from these values to a considerable extent (particularly the first pulse in Fig. 8). The relationships between the measured values, however, are similar and, therefore, also the conclusions. Reasons for deviating measurement values: Even the slightest variations concerning the distance between the earphone and microphone can lead to considerable changes of the measured value. Other earphones or microphones than the ones that were used for the current experiment may have a different level of sensitivity and, as a result, they may generate different pulse heights. The measurement of the maximum is a quick, but also very simple, method for determining the pulse height. It was chosen because we wanted to focus on a qualitative comparison. Under stable geometrical conditions, the values are sufficiently reproducible.
3 Reflection and absorption of sound (Item No.: P ) Task and equipment Task How can sound be reduced? In our everyday lives, we encounter different types of noise. It is often produced by others, which is why it disturbs us. Sometimes, however, it is the sounds that we produce ourselves that reverberate loudly in a room. This is why there are two ways of reducing sound: sound insulation (sound reflection) and sound damping (sound absorption). Sound insulation prevents sound from being transmitted through a wall so that the neighbours will not be disturbed. This is basically achieved by a reflection of the sound at the wall. The absorption into the wall can be neglected for sound insulation. This is in contrast to sound damping: An empty room with highly reflecting walls, floor, and ceiling is very loud. This is why for good room acoustics, sound-absorbing objects (furniture, carpets) or wall panels are installed. In concert halls or recording studios, sound damping is optimised by an arrangement of porous damping materials on or in front of the walls, for example. Sound insulation and sound damping will be examined in various different experiments. 1. Measure the sound transmission through solid walls made of paper or cardboard. 2. Measure the reflection of a sound pulse on a solid wall and examine the effect of felt arrangements in front of the wall. Equipment Position No. Material Order No. Quantity 1 Felt sheet, 100 x 100 mm Metal angle bracket for glass tube o.d. = 44 mm Glass tube, d(outside) = 44 mm, l = 340 mm Beaker, low form, plastic, 100 ml Silk thread, l = 200 m Software "Measure Acoustics", single user license CD case as a reflection shield Additional material Microphone 1 Pair of earphones 1 PC 1 Sheet of paper 1 Piece of adhesive tape, approximately 5 cm 1
4 Set-up and procedure Set-up Connect the earphones and microphone correctly to the computer. Place the glass tube on the two metal brackets (see Fig. 3). Place the beaker upside down on the table and fasten one of the earphones to the beaker with the aid of some adhesive tape (height: approximately the centre axis of the glass tube, see Fig. 3). Fig.1: Experiment 1: earphone and microphone (distance approx. 2 mm) Fig. 2: Thin wall of the CD case between the earphone and microphone. Open the audio settings of the PC. Set the sound output volume to maximum and change the balance so that the sound output takes place only via the earphone that has been fastened to the beaker. Procedure Experiment 1: Sound transmission ttrougt walls - Position the microphone in front of the earphone at a distance of approximately 2 mm (Fig. 1). Adjust a distance that is just about enough for inserting the thin cardboard of the CD case as a "wall" between the microphone and earphone for a second measurement (Fig. 2). This experiment, however, will be performed without this wall. Start the software "measure Acoustics". Open the experiment "3.6 Reflection and absorption of sound". Help 1: Open the experiment overview (Menu "File" "Open experiment" or select "Open experiment" on the menu bar). Open the folder "3 Applications in the field of medicine, music, and everyday life" and select the experiment "3.6 Reflection and absorption of sound". Start the playback in the diagram "Spectrum of the signal at the audio output (loudspeaker or headphones)". After 2 seconds, a sequence of eight sounds will be played. Help 2: Select "Play tones" in the diagram window "Spectrum... (loudspeaker or headphones)". Start the playback again (see Help 2) but this time freeze the time course of the sound recording so that one of the eight sound pulses is clearly visible in the diagram window "Time function... (microphone)". Help 3: Select "Activate/freeze diagram" in the diagram window "Time function of the signal at the audio input (microphone)". Adapt the frozen diagram section so that you can clearly see the recorded sound signal. If necessary, repeat the process until you have successfully recorded a sound signal. Help 4: Select "Fit in curve". Use also the magnifying glass "Zoom" and click in order to drag a rectangle around the area that you would like to zoom. Read the maximum of the relative amplitude and note down the value in Table 1 in the report. Help 5: In the diagram window "Time function... (microphone)", use the crosshair "Mark" in order to determine the y-value (here: relative amplitude) at the location of the crosshair by reading the value off the status bar at the bottom of the screen. Readjust the standard section for further measurements. Help 6: Select "Standard diagram section". Repeat the experiment with the following changes concerning the set-up and measure the maximum of the relative amplitude each time: Sheet of paper between the earphone and microphone Thin wall (CD case) between the earphone and microphone (Fig. 2) Experiment 2: Reflection of sound on various different wall surfaces
5 Place the earphone and microphone directly in front of the same opening of the glass tube (Fig. 3). Push the earphone approximately 2 mm into the glass tube and ensure that it points directly in the direction of the tube. The microphone should be positioned as horizontally as possible directly at the end of the tube (Fig. 3). As a result, the earphone signal and the echo will have approximately the same magnitude. Seal the other end of the tube by placing the CD case in front of the opening. The wall should be perpendicular and it should seal the opening of the tube well (Fig. 3). Fig. 3: Reflection of sound on the CD case Note: Hold the glass tube firmly in place when you change the set-up in-between the measurement series in order to keep the glass tube, earphone, and microphone correctly aligned so that all of the measurement series are comparable. For verification: During all of the measurements for experiment 2, the relative amplitudes of the first pulse should be approximately identical. Start the output of the sound pulses (see Help 2) and freeze the time course (see Help 3). Adapt the diagram section (see Help 4). Describe the recorded time course (under "Evaluation - Question 2"). Read the maximum of the relative amplitude of the first and second pulse (see Help 5) and note down the values in Table 2. Readjust the standard section (Help 6). Repeat the measurements with the following changes to the reflecting end of the tube: Place a felt sheet in front of the CD case (Fig. 4) Place a felt sheet on the inner wall at the end of the glass tube; seal it with the CD case (Fig. 5). Fig. 4: Reflection of sound on a flat felt sheet Fig. 5: Reflection of sound on the CD case with a felt roll Place a felt funnel (Fig. 6) in the glass tube directly in front of the sealing CD case so that the sound "flows" into the funnel. If possible, the small end of the funnel should be closed.
6 Fig. 6: Funnel made of felt
7 Report: Reflection and absorption of sound Result - Table 1 (3 Punkte) Experiment 1: Sound transmission through walls Table 1: Maximum relative amplitude of the pulse Without a wall Sheet of paper CD case Pulse 20.5% 1 8.1% 1 2.2% 1 Result - Table 2 (8 Punkte) Experiment 2: Reflection of sound on various different wall surfaces Table 2: Maximum relative amplitudes of the pulses CD case CD case with CD case and a felt roll CD case and a funnel-shaped f alone a felt sheet inside the tube inside the tube First pulse 12.2% % % % Second pulse 11.8% 1 6.7% 1 2.7% 1 1%
8 Evaluation - Question 1 (10 Punkte) Compare the maximum relative amplitudes of the pulses with a sheet of paper and a CD case to the value without a "wall" (experiment 1). Which of the "walls" provided the highest sound insulation? Evaluation - Question 2 (10 Punkte) Compare the recorded time courses of experiment 1 and 2. What is the meaning of the pulses that can be seen additionally in experiment 2?
9 Evaluation - Question 3 (10 Punkte) In experiment 2, compare the results of the two smooth walls, i.e. the CD case alone and the CD case with a felt sheet, and explain your observations. Evaluation - Question 4 (10 Punkte) In experiment 2, compare the results of the open felt roll and the closed felt roll (funnel) inside the tube. Explain your observations.
Determination of an unknown frequency (beats)
Teacher's/Lecturer's Sheet Determination of an unknown frequency (beats) (Item No.: P6011900) Curricular Relevance Area of Expertise: Physics Education Level: Age 16-19 Topic: Acoustics Subtopic: Wave
More informationDoppler effect (Item No.: P )
Teacher's/Lecturer's Sheet Doppler effect (Item No.: P6012100) Curricular Relevance Area of Expertise: Physik Education Level: Klasse 10-13 Topic: Akustik Subtopic: Schwingungen und Wellen Experiment:
More informationFunctioning of the human eye (normal vision)
Teacher's/Lecturer's Sheet Functioning of the human eye (normal vision) (Item No.: P1066700) Curricular Relevance Area of Expertise: Physik Education Level: Klasse 7-10 Topic: Optik Subtopic: Das Auge
More informationSupplementary User Manual for BSWA Impedance Tube Measurement Systems
Supplementary User Manual for BSWA Impedance Tube Measurement Systems 1 P age Contents Software Installation... 3 Absorption Measurements -- ASTM Method... 4 Hardware Set-Up... 4 Sound card Settings...
More informationResonance Tube Lab 9
HB 03-30-01 Resonance Tube Lab 9 1 Resonance Tube Lab 9 Equipment SWS, complete resonance tube (tube, piston assembly, speaker stand, piston stand, mike with adaptors, channel), voltage sensor, 1.5 m leads
More informationColour dispersion with a prism (Item No.: P )
Teacher's/Lecturer's Sheet Colour dispersion with a prism (Item No.: P1066100) Curricular Relevance Area of Expertise: Physik Education Level: Klasse 7-10 Topic: Optik Subtopic: Farbenlehre Experiment:
More informationA group of friends from the sixth grade decided to form a band Sam is the drummer, Violet is the singer, and Jack plays bass guitar.
A group of friends from the sixth grade decided to form a band Sam is the drummer, Violet is the singer, and Jack plays bass guitar. They wrote the songs, composed the music and spent hours practicing
More informationPHYSICS 107 LAB #6: SINGING IN THE SHOWER, SINGING
Section: Monday / Tuesday (circle one) Name: Partners: /29 pts Could add in a simple Articulation test (p. 186 of The Taylor Manual of experiments or at http://arch37 3.wikispaces. com/sound+ Off) for
More informationResonance Tube. 1 Purpose. 2 Theory. 2.1 Air As A Spring. 2.2 Traveling Sound Waves in Air
Resonance Tube Equipment Capstone, complete resonance tube (tube, piston assembly, speaker stand, piston stand, mike with adapters, channel), voltage sensor, 1.5 m leads (2), (room) thermometer, flat rubber
More informationResonance Tube. 1 Purpose. 2 Theory. 2.1 Air As A Spring. 2.2 Traveling Sound Waves in Air
Resonance Tube Equipment Capstone, complete resonance tube (tube, piston assembly, speaker stand, piston stand, mike with adaptors, channel), voltage sensor, 1.5 m leads (2), (room) thermometer, flat rubber
More information3B SCIENTIFIC PHYSICS
B SCIENTIFIC PHYSICS Cavendish Torsion Balance 007 Operating instructions 06/8 ALF. Description The Cavendish torsion balance is for demonstrating the gravitational attraction between two masses and determining
More informationISSUED BY KENDRIYA VIDYALAYA - DOWNLOADED FROM CHAPTER 12 Sound
1. Production of Sound CHAPTER 12 Sound KEY CONCEPTS [ *rating as per the significance of concept] 1 Production of Sound **** 2 Propagation of Sound ***** 3 Reflection of Sound ***** 4 Echo **** 5 Uses
More informationVolume (cu. Ft.) Total Abosrption 3340 Room Volume Reverbation Time 1.53
Lionell Hampton School of Music Auditorium Haddock Performance Hall Space Evaluated on April 29th, 2012 by: Janice Kammler Alto and Tenor Saxophones Performance by: Patrick McCulley and on April 20th,
More informationPeriod 3 Solutions: Electromagnetic Waves Radiant Energy II
Period 3 Solutions: Electromagnetic Waves Radiant Energy II 3.1 Applications of the Quantum Model of Radiant Energy 1) Photon Absorption and Emission 12/29/04 The diagrams below illustrate an atomic nucleus
More informationRLC-circuits with Cobra4 Xpert-Link
Student's Sheet RLC-circuits with Cobra4 Xpert-Link (Item No.: P2440664) Curricular Relevance Area of Expertise: Physics Subtopic: Inductance, Electromagnetic Oscillations, AC Circuits Topic: Electricity
More informationChapter 15 Supplement HPS. Harmonic Motion
Chapter 15 Supplement HPS Harmonic Motion Motion Linear Moves from one place to another Harmonic Motion that repeats over and over again Examples time, speed, acceleration Examples Pendulum Swing Pedaling
More informationBriefing. Briefing 24 People. Keep everyone s attention with the presenter front and center. C 2015 Cisco and/or its affiliates. All rights reserved.
Briefing 24 People Keep everyone s attention with the presenter front and center. 3 1 4 2 Product ID Product CTS-SX80-IPST60-K9 Cisco TelePresence Codec SX80 1 Included in CTS-SX80-IPST60-K9 Cisco TelePresence
More informationSIA Software Company, Inc.
SIA Software Company, Inc. One Main Street Whitinsville, MA 01588 USA SIA-Smaart Pro Real Time and Analysis Module Case Study #2: Critical Listening Room Home Theater by Sam Berkow, SIA Acoustics / SIA
More informationAttenuation and velocity of ultrasound in solid state materials (transmission)
Attenuation and velocity of ultrasound in solid 5.1.6.08 Related Topics Propagation of ultrasonic waves, time of flight, sound velocity, damping of ultrasonic waves (scattering, reflection, absorption),
More informationScience Teacher Workshop Meter Exercises. Hands on demonstration with Geiger Counters and experiments for the classroom.
Science Teacher Workshop Meter Exercises Hands on demonstration with Geiger Counters and experiments for the classroom. Exercise 1 Survey Bingo Needed: Several Lantern mantles (or suitable radiation sources)
More information4: EXPERIMENTS WITH SOUND PULSES
4: EXPERIMENTS WITH SOUND PULSES Sound waves propagate (travel) through air at a velocity of approximately 340 m/s (1115 ft/sec). As a sound wave travels away from a small source of sound such as a vibrating
More informationEquipment for Attenuation and velocity of ultrasound in solid state materials (transmission), experimental set-up
Attenuation and velocity of ultrasound in solid TEAS Related Topics Propagation of ultrasonic waves, time of flight, sound velocity, damping of ultrasonic waves (scattering, reflection, absorption), transmission
More informationFLATFROG MULTITOUCH 3200
FLATFROG MULTITOUCH 3200 Quick Assembly Guide Document Number LZN 100013 R1B Issue 2012-07 Industrial Design Casing Parts List b a Package contents Industrial design casing. The following items are included:
More informationDESIGN OF VOICE ALARM SYSTEMS FOR TRAFFIC TUNNELS: OPTIMISATION OF SPEECH INTELLIGIBILITY
DESIGN OF VOICE ALARM SYSTEMS FOR TRAFFIC TUNNELS: OPTIMISATION OF SPEECH INTELLIGIBILITY Dr.ir. Evert Start Duran Audio BV, Zaltbommel, The Netherlands The design and optimisation of voice alarm (VA)
More informationROOM SHAPE AND SIZE ESTIMATION USING DIRECTIONAL IMPULSE RESPONSE MEASUREMENTS
ROOM SHAPE AND SIZE ESTIMATION USING DIRECTIONAL IMPULSE RESPONSE MEASUREMENTS PACS: 4.55 Br Gunel, Banu Sonic Arts Research Centre (SARC) School of Computer Science Queen s University Belfast Belfast,
More informationSOUND. Second, the energy is transferred from the source in the form of a longitudinal sound wave.
SOUND - we can distinguish three aspects of any sound. First, there must be a source for a sound. As with any wave, the source of a sound wave is a vibrating object. Second, the energy is transferred from
More informationComplementary colours (Item No.: P )
Teacher's/Lecturer's Sheet Complementary colours (Item No.: P1066300) Curricular Relevance Area of Expertise: Physik Education Level: Klasse 7-10 Topic: Optik Subtopic: Farbenlehre Experiment: Komplementärfarben
More informationONLINE TUTORIALS. Log on using your username & password. (same as your ) Choose a category from menu. (ie: audio)
ONLINE TUTORIALS Go to http://uacbt.arizona.edu Log on using your username & password. (same as your email) Choose a category from menu. (ie: audio) Choose what application. Choose which tutorial movie.
More informationEmagiKit. Privacy Pod Plus. Quiet. Easy. Affordable. INSTRUCTIONS ASSEMBLY
EmagiKit Privacy Pod Plus Quiet. Easy. Affordable. INSTRUCTIONS ASSEMBLY DIMENSIONS AND COMPONENTS 47 47 Ceiling Unit 2-B 2-L 2-R Glass Door Corner Trim Door Handle 90 Adjustable Height Work Surface 1-B
More informationX-ray investigation of crystal structures / Laue method with digital X-ray detector (XRIS) (Item No.: P )
X-ray investigation of crystal structures / Laue method with digital X-ray detector (XRIS) (Item No.: P2541602) Curricular Relevance Area of Expertise: Physik Education Level: Hochschule Topic: Moderne
More informationIntext Exercise 1 Question 1: How does the sound produced by a vibrating object in a medium reach your ear?
Intext Exercise 1 How does the sound produced by a vibrating object in a medium reach your ear? When an vibrating object vibrates, it forces the neighbouring particles of the medium to vibrate. These vibrating
More informationDESIGN AND APPLICATION OF DDS-CONTROLLED, CARDIOID LOUDSPEAKER ARRAYS
DESIGN AND APPLICATION OF DDS-CONTROLLED, CARDIOID LOUDSPEAKER ARRAYS Evert Start Duran Audio BV, Zaltbommel, The Netherlands Gerald van Beuningen Duran Audio BV, Zaltbommel, The Netherlands 1 INTRODUCTION
More informationNew ON/OFF Absorption Technology That Includes Low Frequencies
Toronto, Canada International Symposium on Room Acoustics 2013 June 9-11 ISRA 2013 New ON/OFF Absorption Technology That Includes Low Frequencies Niels W. Adelman-Larsen (nwl@flexac.com) Flex Acoustics
More informationTL4100 Top 5 Build Tips
TL4100 Top 5 Build Tips 1: Top Plate When assembling the top plate, align the top of the top plate brackets with the top of the rods. This can be done by placing a hard flat object (such as a ruler) on
More informationSampling and Reconstruction
Experiment 10 Sampling and Reconstruction In this experiment we shall learn how an analog signal can be sampled in the time domain and then how the same samples can be used to reconstruct the original
More informationRoom- and electro-acoustic design for a club size performance space
Room- and electro-acoustic design for a club size performance space Henrik Möller, Tapio Ilomäki, Jaakko Kestilä, Sakari Tervo, Akukon Oy, Hiomotie 19, FIN-00380 Helsinki, Finland, henrik.moller@akukon.com
More informationDrexel-SDP GK-12 ACTIVITY
Drexel-SDP GK-12 ACTIVITY Activity Template Subject Area(s): Sound Associated Unit: None Associated Lesson: None Activity Title: Sound Booth Construction Grade Level: 8 (7-9) Activity Dependency: None
More informationPHYSICS LAB. Sound. Date: GRADE: PHYSICS DEPARTMENT JAMES MADISON UNIVERSITY
PHYSICS LAB Sound Printed Names: Signatures: Date: Lab Section: Instructor: GRADE: PHYSICS DEPARTMENT JAMES MADISON UNIVERSITY Revision August 2003 Sound Investigations Sound Investigations 78 Part I -
More informationInterior CHAPTER 21. Phantom Roadster Instruction Manual 273
CHAPTER 21 Interior When you get to this chapter you are now starting on the finish that will make your car one that will be complete your hard work. This chapter will cover the installation of the door
More informationREVERBERATION CHAMBER FOR EMI TESTING
1 REVERBERATION CHAMBER FOR EMI TESTING INTRODUCTION EMI Testing 1. Whether a product is intended for military, industrial, commercial or residential use, while it must perform its intended function in
More informationDevelopment of a Reactive Silencer for Turbo Compressors
Development of a Reactive Silencer for Turbo Compressors Jan Smeulers Nestor Gonzalez TNO Fluid Dynamics TNO Fluid Dynamics Stieltjesweg 1 Stieltjesweg 1 2628CK Delft 2628CK Delft jan.smeulers@tno.nl nestor.gonzalezdiez@tno.nl
More informationSound Waves and Beats
Physics Topics Sound Waves and Beats If necessary, review the following topics and relevant textbook sections from Serway / Jewett Physics for Scientists and Engineers, 9th Ed. Traveling Waves (Serway
More informationSound recording & playback
Sound recording & playback Dynamic microphone Condenser microphone Carbon microphone Frequency response curves Sound recording Amplifiers Loudspeakers Sound recording & playback - 1 Dynamic microphone
More informationPolyboard 6 WOOD. new features. designer
Polyboard 6 new features WOOD designer Legal Disclaimers All contents copyright 2016 Wood Designer Ltd. All rights reserved worldwide. No part of this document should be reproduced, transmitted or distributed
More informationDesign Project. Kresge Auditorium Lighting Studies and Acoustics. By Christopher Fematt Yuliya Bentcheva
Design Project Kresge Auditorium Lighting Studies and Acoustics By Christopher Fematt Yuliya Bentcheva Due to the function of Kresge Auditorium, the main stage space does not receive any natural light.
More informationGeneral purpose Signal generation and analysis. Well-equipped for field and lab the R&S Spectrum Rider
General purpose Signal generation and analysis Well-equipped for field and lab the R&S Spectrum Rider 32 The new R&S Spectrum Rider makes spectrum analysis in the field and lab easier, faster and more
More informationPh 2306 Experiment 2: A Look at Sound
Name ID number Date Lab CRN Lab partner Lab instructor Ph 2306 Experiment 2: A Look at Sound Objective Because sound is something that we can only hear, it is difficult to analyze. You have probably seen
More informationINTRODUCTION. Strong Performance: High resolution and penetration, achieving precise flaw detection
Shantou Institute of Ultrasonic Instruments Co., Ltd. Add: 77 Jinsha Road, Shantou, Guangdong 515041, China Tel: 86-754-88250150 Fax: 86-754-88251499 Http://www.siui.com/ndt Product Data CTS-9009 Digital
More informationRoom Acoustics. March 27th 2015
Room Acoustics March 27th 2015 Question How many reflections do you think a sound typically undergoes before it becomes inaudible? As an example take a 100dB sound. How long before this reaches 40dB?
More informationTransverse Pulses - Grade 10 *
OpenStax-CNX module: m35714 1 Transverse Pulses - Grade 10 * Rory Adams Free High School Science Texts Project Heather Williams This work is produced by OpenStax-CNX and licensed under the Creative Commons
More information2015 Spin echoes and projection imaging
1. Spin Echoes 1.1 Find f0, transmit amplitudes, and shim settings In order to acquire spin echoes, we first need to find the appropriate scanner settings using the FID GUI. This was all done last week,
More informationLong-sightedness and its correction (Item No.: P )
Teacher's/Lecturer's Sheet Long-sightedness and its correction (Item No.: P1066900) Curricular Relevance Area of Expertise: Physik Education Level: Klasse 7-10 Topic: Optik Subtopic: Das Auge Experiment:
More informationTEAK Sound and Music
Sound and Music 2 Instructor Preparation Guide Important Terms Wave A wave is a disturbance or vibration that travels through space. The waves move through the air, or another material, until a sensor
More informationLab 8. ANALYSIS OF COMPLEX SOUNDS AND SPEECH ANALYSIS Amplitude, loudness, and decibels
Lab 8. ANALYSIS OF COMPLEX SOUNDS AND SPEECH ANALYSIS Amplitude, loudness, and decibels A complex sound with particular frequency can be analyzed and quantified by its Fourier spectrum: the relative amplitudes
More information5. SilverFast Tools Tools SilverFast Manual. 5. SilverFast Tools Image Auto-Adjust (Auto-Gradation) 114
Chapter 5 Tools 5. SilverFast Tools 5. SilverFast Tools 106 5.1 Image Auto-Adjust (Auto-Gradation) 114 5.2 Highlight / Shadow Tool 123 5.3 The Histogram 133 5.4 Gradation Dialogue 147 5.5 Global Colour
More information[Q] DEFINE AUDIO AMPLIFIER. STATE ITS TYPE. DRAW ITS FREQUENCY RESPONSE CURVE.
TOPIC : HI FI AUDIO AMPLIFIER/ AUDIO SYSTEMS INTRODUCTION TO AMPLIFIERS: MONO, STEREO DIFFERENCE BETWEEN STEREO AMPLIFIER AND MONO AMPLIFIER. [Q] DEFINE AUDIO AMPLIFIER. STATE ITS TYPE. DRAW ITS FREQUENCY
More information4.6 Waves Waves in air, fluids and solids Transverse and longitudinal waves
4.6 Waves Wave behaviour is common in both natural and man-made systems. Waves carry energy from one place to another and can also carry information. Designing comfortable and safe structures such as bridges,
More informationLunette Series. Home Theater Curved Fixed Frame Projection Screen. User s Guide. Important Safety and Warning Precautions
Lunette Series Home Theater Curved Fixed Frame Projection Screen User s Guide Important Safety and Warning Precautions Please follow these instructions carefully to ensure proper maintenance and safety
More informationWheatstone bridge (Item No.: P )
Wheatstone bridge (Item No.: P2410200) Curricular Relevance Area of Expertise: Physics Education Level: University Topic: Electricity and Magnetism Subtopic: Electric Current and Resistance Experiment:
More informationLunette Series. Home Theater Curved Fixed Frame Projection Screen. User s Guide. Important Safety and Warning Precautions
Lunette Series Home Theater Curved Fixed Frame Projection Screen User s Guide Important Safety and Warning Precautions Please follow these instructions carefully to ensure proper maintenance and safety
More informationDESIGN OF ROOMS FOR MULTICHANNEL AUDIO MONITORING
DESIGN OF ROOMS FOR MULTICHANNEL AUDIO MONITORING A.VARLA, A. MÄKIVIRTA, I. MARTIKAINEN, M. PILCHNER 1, R. SCHOUSTAL 1, C. ANET Genelec OY, Finland genelec@genelec.com 1 Pilchner Schoustal Inc, Canada
More informationlightstudio light box to illuminate a scene with different standardized light types
light box to illuminate a scene with different standardized light types Image Engineering GmbH & Co. KG. Augustinusstraße 9d. 50226 Frechen. Germany T +49 2234 995595 0. F +49 2234 995595 10. www.image-engineering.de
More informationNDT Supply.com P.O. BOX 7350 Shawnee Mission, KS USA SIUI Digital Ultrasonic Flaw Detector
Full featured, Portable, Easy-to-Use & Reliable New Generation General-Purpose Digital Flaw Detector Portable, Easy-to-Use, Reliable Advanced General-Purpose Digital Flaw Detector Adjustable spike & square
More informationApplications Note. Successfully using the Model 8000 NERO dental x-ray machine timer performance. max to evaluate
Successfully using the Model 8000 NERO dental x-ray machine timer performance max to evaluate Information in this article applies to Model 8000 NERO max firmware release 2.3 or higher. Introduction The
More informationTZ-RD-1740 Rotary Dipole Instruction Manual
TZ-RD-1740 17/40m Rotary Dipole Instruction Manual The TZ-RD-1740 is a loaded dipole antenna for the 40m band and a full size rotary dipole for the 17m band. The antenna uses an aluminium radiating section
More informationWELCOME TO SHIMMER SHAKE STRIKE 2 SETUP TIPS 2 SNAPSHOTS 3
WELCOME TO SHIMMER SHAKE STRIKE 2 SETUP TIPS 2 SNAPSHOTS 3 INSTRUMENT FEATURES 4 OVERVIEW 4 MAIN PANEL 4 SYNCHRONIZATION 5 SYNC: ON/OFF 5 TRIGGER: HOST/KEYS 5 PLAY BUTTON 6 HALF SPEED 6 PLAYBACK CONTROLS
More informationStorage Cabinets 9000 Series Assembly Instructions
Storage Cabinets 9000 Series Assembly Instructions Thank you for selecting Salsbury s storage cabinets. We are confident that the quality and construction of the cabinets will prove to be a good investment.
More informationExperiment P10: Acceleration of a Dynamics Cart II (Motion Sensor)
PASCO scientific Physics Lab Manual: P10-1 Experiment P10: (Motion Sensor) Concept Time SW Interface Macintosh file Windows file Newton s Laws 30 m 500 or 700 P10 Cart Acceleration II P10_CAR2.SWS EQUIPMENT
More informationLunette 2 Series. Curved Fixed Frame Projection Screen. User s Guide
Lunette 2 Series Curved Fixed Frame Projection Screen User s Guide Important Safety and Warning Precautions Please follow these instructions carefully to ensure proper maintenance and safety with your
More informationSketch-Up Guide for Woodworkers
W Enjoy this selection from Sketch-Up Guide for Woodworkers In just seconds, you can enjoy this ebook of Sketch-Up Guide for Woodworkers. SketchUp Guide for BUY NOW! Google See how our magazine makes you
More informationFIR/Convolution. Visulalizing the convolution sum. Convolution
FIR/Convolution CMPT 368: Lecture Delay Effects Tamara Smyth, tamaras@cs.sfu.ca School of Computing Science, Simon Fraser University April 2, 27 Since the feedforward coefficient s of the FIR filter are
More informationCOLOR CONTRAST AND LUMINESCENCE SENSORS
WHITE PAPER COLOR CONTRAST AND LUMINESCENCE SENSORS THE KEY TO SUCCESSFUL AUTOMATION CONTROL Bill Letterle Senior Engineer EMX Industries, Inc. PHOTOELECTRICS: THE KEY TO SUCCESSFUL AUTOMATION CONTROL
More informationSECTION A Waves and Sound
AP Physics Multiple Choice Practice Waves and Optics SECTION A Waves and Sound 2. A string is firmly attached at both ends. When a frequency of 60 Hz is applied, the string vibrates in the standing wave
More informationCreating Digital Music
Chapter 2 Creating Digital Music Chapter 2 exposes students to some of the most important engineering ideas associated with the creation of digital music. Students learn how basic ideas drawn from the
More informationAnalysis on Acoustic Attenuation by Periodic Array Structure EH KWEE DOE 1, WIN PA PA MYO 2
www.semargroup.org, www.ijsetr.com ISSN 2319-8885 Vol.03,Issue.24 September-2014, Pages:4885-4889 Analysis on Acoustic Attenuation by Periodic Array Structure EH KWEE DOE 1, WIN PA PA MYO 2 1 Dept of Mechanical
More informationAudiofrog UMI-1 Tuning CD Liner Notes
Audiofrog UMI-1 Tuning CD Liner Notes We have chosen and arranged the tracks on this CD to help make tuning your system using common tools and a real time analyzer as straightforward as possible. This
More informationWaves Q1. MockTime.com. (c) speed of propagation = 5 (d) period π/15 Ans: (c)
Waves Q1. (a) v = 5 cm (b) λ = 18 cm (c) a = 0.04 cm (d) f = 50 Hz Q2. The velocity of sound in any gas depends upon [1988] (a) wavelength of sound only (b) density and elasticity of gas (c) intensity
More informationOperation Manual. Dynavector SuperStereo Adapter DV SS Adp-3
Dynavector SuperStereo Adapter DV SS Adp-3 Operation Manual CONTENTS Introduction... 2 Speaker Positioning... 3 Controls and Functions... 4 Installation Method (1)... 5 Installation Method (2)... 6 Installation
More informationA3D Contiguous time-frequency energized sound-field: reflection-free listening space supports integration in audiology
A3D Contiguous time-frequency energized sound-field: reflection-free listening space supports integration in audiology Joe Hayes Chief Technology Officer Acoustic3D Holdings Ltd joe.hayes@acoustic3d.com
More information, where I 0 is the. From the definition of intensity level, I I
Acoustics of buildings Obtaining right amount of reverberation is the secret of good acoustics Topics: Applied acoustics: Sound transducers and their characteristics. Recording and reproduction of sound.
More informationLaminate goes Wall. Installation documentation for wall panelling with gekko-system and Extravagant from CLASSEN.
Laminate goes Wall The new panelling system for walls and ceilings from CLASSEN. Installation documentation for wall panelling with gekko-system and Extravagant from CLASSEN. Important information: Installing
More informationUNIVERSITY OF TORONTO Faculty of Arts and Science MOCK EXAMINATION PHY207H1S. Duration 3 hours NO AIDS ALLOWED
UNIVERSITY OF TORONTO Faculty of Arts and Science MOCK EXAMINATION PHY207H1S Duration 3 hours NO AIDS ALLOWED Instructions: Please answer all questions in the examination booklet(s) provided. Completely
More informationINFINITE RANGE - CENTRE FOLDING DOOR
INFINITE RANGE - CENTRE FOLDING DOOR CENTRE FOLDING DOOR ONLY ( RECESS) Please read these instructions before installing, as incorrect fitting will invalidate the guarantee-carry out each stage before
More informationAuditory Localization
Auditory Localization CMPT 468: Sound Localization Tamara Smyth, tamaras@cs.sfu.ca School of Computing Science, Simon Fraser University November 15, 2013 Auditory locatlization is the human perception
More informationSound Design and Technology. ROP Stagehand Technician
Sound Design and Technology ROP Stagehand Technician Functions of Sound in Theatre Music Effects Reinforcement Music Create aural atmosphere to put the audience in the proper mood for the play Preshow,
More informationConvention Paper 6230
Audio Engineering Society Convention Paper 6230 Presented at the 117th Convention 2004 October 28 31 San Francisco, CA, USA This convention paper has been reproduced from the author's advance manuscript,
More informationJUST EMBROIDER IT! ALL YOU NEED TO KNOW ABOUT HOOP 'N' BUDDYZ
BERNINA ebook Series JUST EMBROIDER IT! ALL YOU NEED TO KNOW ABOUT HOOP 'N' BUDDYZ Written by: Judy Hahner BERNINA Educator, Professional & Home Embroidery Specialist Hoop 'N' Buddyz Embroidery Hoop and
More informationA STUDY ON NOISE REDUCTION OF AUDIO EQUIPMENT INDUCED BY VIBRATION --- EFFECT OF MAGNETISM ON POLYMERIC SOLUTION FILLED IN AN AUDIO-BASE ---
A STUDY ON NOISE REDUCTION OF AUDIO EQUIPMENT INDUCED BY VIBRATION --- EFFECT OF MAGNETISM ON POLYMERIC SOLUTION FILLED IN AN AUDIO-BASE --- Masahide Kita and Kiminobu Nishimura Kinki University, Takaya
More informationResonant Self-Destruction
SIGNALS & SYSTEMS IN MUSIC CREATED BY P. MEASE 2010 Resonant Self-Destruction OBJECTIVES In this lab, you will measure the natural resonant frequency and harmonics of a physical object then use this information
More informationKatran-Lux. Non-linear junction detector USER MANUAL
Katran-Lux Non-linear junction detector USER MANUAL 1 Nonlinear junction detector Katran-Lux is intended for search and detection of electronic devices installed in building structures, pieces of furniture
More informationMagne Skålevik Brekke & Strand, Oslo, Norway. Small room acoustics THE HARD CASE
Magne Skålevik Brekke & Strand, Oslo, Norway www.akutek.info Small room acoustics THE HARD CASE The Hard Case Cuboid room, dimensions given, take it or leave it Hard walls Hard floor Soft material elements
More informationOF LEVELS & ADJUSTMENTS TO THE GRID. Bldg: Levels. PROF. PAUL C. KING RA New York City College of Technology. Learning Community.
Bldg: Levels DEVELOPMENT OF LEVELS & ADJUSTMENTS TO THE GRID Overview: The existing drawing includes 2 levels set 10' apart. For the Lab Building we need to createe a total of 6 levels with a vertical
More informationCAD Orientation (Mechanical and Architectural CAD)
Design and Drafting Description This is an introductory computer aided design (CAD) activity designed to give students the foundational skills required to complete future lessons. Students will learn all
More informationMonitor Setup Guide The right monitors. The correct setup. Proper sound.
Monitor Setup Guide 2017 The right monitors. The correct setup. Proper sound. Table of contents Genelec Key Technologies 3 What is a monitor? 4 What is a reference monitor? 4 Selecting the correct monitors
More informationAcoustics II: Kurt Heutschi recording technique. stereo recording. microphone positioning. surround sound recordings.
demo Acoustics II: recording Kurt Heutschi 2013-01-18 demo Stereo recording: Patent Blumlein, 1931 demo in a real listening experience in a room, different contributions are perceived with directional
More informationFrom time to time it is useful even for an expert to give a thought to the basics of sound reproduction. For instance, what the stereo is all about?
HIFI FUNDAMENTALS, WHAT THE STEREO IS ALL ABOUT Gradient ltd.1984-2000 From the beginning of Gradient Ltd. some fundamental aspects of loudspeaker design has frequently been questioned by our R&D Director
More informationISONIC PA AUT Spiral Scan Inspection of Tubular Parts Operating Manual and Inspection Procedure Rev 1.00 Sonotron NDT
ISONIC PA AUT Spiral Scan Inspection of Tubular Parts Operating Manual and Inspection Procedure Rev 1.00 Sonotron NDT General ISONIC PA AUT Spiral Scan Inspection Application was designed on the platform
More informationV Installation instructions, accessories. Auxiliary seat. Volvo Car Corporation Gothenburg, Sweden V70 (00-08) 2002
Installation instructions, accessories Instruction No 8624018 Version 1.3 Part. No. 30749269, 30749270, 30749271, 30749272, 30749273, 30749274 Auxiliary seat M8901699 Volvo Car Corporation Auxiliary seat-
More informationSound. Use a Microphone to analyze the frequency components of a tuning fork. Record overtones produced with a tuning fork.
Sound PART ONE - TONES In this experiment, you will analyze various common sounds. You will use a Microphone connected to a computer. Logger Pro will display the waveform of each sound, and will perform
More informationBattery-Free Wireless Pushbutton Useful Tips for Reliable Range Planning
Battery-Free Wireless Pushbutton Useful Tips for Reliable Range Planning,, 2010-11-12,, leipzig@schlegel.biz, www.schlegel.biz 1. INTRODUCTION Compared to wireline systems, wireless solutions enable convenient
More information