installation in performance halls
|
|
- Basil Nash
- 6 years ago
- Views:
Transcription
1 Emplacement réservé pour une photo Isabelle Schmich The Carmen system and its installation in performance halls ACOUSTIC AND LIGHTING DEPARTMENT CARMEN SSA - 31 octobre 2008 PAGE 1
2 Reverberation Enhancement Systems - What For? Reverberation time for different types of performances Program Reverberation time (s) Popular music, Jazz 0,8-1,2 Lecture, Conference 0,7-1 Speech drama 1-1,2 Chamber music 1,3-1,5 Opera ,6 Symphonic Concert 1,8-2,5 Looking for control and variability of : > Reverberation Time (RT) > Sound Pressure Level (SPL) and Early Energy Distribution > Intelligibility, Envelopment, Clarity > Space-time impression ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 2
3 Reverberation Enhancement Systems - What For? Many auditoria suffer defects of various types, which are not always possible to correct architecturally. Too small volume, large overhang balconies, acoustically unsuitable shape, excess of sound absorbing materials, which create : dry acoustics, dead areas, remote and weak sound, lack of homogeneity, disturbed sound images Other halls need variable acoustics because of their performance program ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 3
4 Changing the Acoustics of a hall PASSIVE SOLUTIONS Movable absorbing/reflecting elements (curtains, panels, banners ) Movable ceiling or walls (change of the volume) Stage acoustic fittings (orchestra shell, panels, reflectors, orchestra risers) Cumbersome, limited efficiency, high cost ACTIVE C SOLUTIONS O S Installing a Reverberation Enhancement System (increases RT and SPL) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 4
5 Reverberation Enhancement Systems Why? Can easily correct a lot of acoustic defects without undertaking heavy architectural works Can easily modify the acoustic c conditions o of an auditorium to correspond with the various types of cultural events. ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 5
6 Development of electroacoustic systems First electroacoustic system: 1929 by V.S. Kawanski General Synoptic ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 6
7 Basic equations Without system: With one active cell : S r = H sr. S s S r = H sr. S s +H hr. S h Open Loop Gain : G mh. H hm Gmh Signals: S h = G mh. S m = G mh. (H sm. S s + H hm. S h h) S h = (I - G mh.h hm ) -1. G mh. H sm. S s (I - G mh.h hm )< <==> rebouclage Source -> Receiver transfer function : H tot = S r / S s = H sr + H hr. (I - G mh. H hm ) -1. G mh. H sm = H sr +H ea S m S h H H hm sm S s H sr H hr S r ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 7
8 What is colouration? Each hall has its own tonal quality that can be characterized through the colour of the hall Colouration is due to a different time-decay of the sound energy at specific frequencies caused by room resonance effects. ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 8
9 Familles de systèmes Systèmes régénératifs (MCR, CARMEN, AS, AFC): rebouclage acoustique utilisé pour augmenter la réverbération Systèmes non-régénératifs (SIAP, ACS, ASR): rebouclage acoustique minimisé réverbération électronique Systèmes hybrides (LARES, Constellation/VRAS): couplage acoustique réverbération électronique - Absorption + Volume ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 9
10 Regenerative / In-line systems ADVANTAGES Regenerative systems > Natural sound >Space and time respect of sound source images > No use of electronic reverberation In-Line Systems > First reflections control > SPL / RT uncoupled > Very long RT possible DISADVANTAGES Regenerative Systems > Diffuse action on 1 st reflections > SPL / RT Coupling > Background HVAC noise increased In-Line Systems > Disturbance of sound images > Uneven stage covering >Frequent coloration due to electronic reverberation > Disturbing time variance effects ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 10
11 Specifications for choosing a R.E.S. Undetectable by listeners, natural sounding No change of the acoustic qualities of the walls and the geometry of the hall Large variation of RT (> +50%) over the full frequency range Control of early energy (clarity, intelligibility) ibilit Inaudible self-background noise No space-time disturbance of sound images and orchestra balance Long term reliability Easy to use Must not conflict with other equipment (lighting, ) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 11
12 CARMEN is a French Acronym of : Contrôle tôl Actif de la Réverbération par Murs virtuels à Effet Naturel (Active control of reverberation by natural effect virtual walls) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 12
13 Active Virtual Wall Principle A small number of active cells, each composed of a microphone close to the associated loudspeaker, spread all around the hall. Acoustic and electronic filters suited for controlling cells stability. Quasi-locally reacting cells behave as active reflectors/diffusers placed on walls and ceiling Reverberation builds up by natural acoustic interaction between the active virtual walls cells, just as natural reverberation. ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 13
14 Active Virtual Wall Principle Each cell is composed of : a loudspeaker an electronic processing unit a microphone insensitive to the loudspeaker acoustic radiation Pi A/D Pc DIGITAL SIGNAL PROCESSING Pr =r(pi= r.(pi - Pc) D/A Several independent cells behave as a virtual wall ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 14
15 CARMEN - Block Diagram ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 15
16 CARMEN Tuning Parameters 6 parametric filters 22 tuning parameters for one wall Cell 1 G τ GFWS G,F,W,S GFWS G,F,W,S Cell 2 G τ G,F,W,S G,F,W,S Wall 1 5 parametric filters G τ G,F,W,S G,F,W,S Cell m G τ G,F,W,S G,F,W,S Cell n G τ G,F,W,S G,F,W,S Wall n G τ G,F,W,S G,F,W,S Cell p G τ G,F,W,S G,F,W,S 26 tuning parameters for one cell ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 16
17 CARMEN Main Points Virtual positioning of the ceiling and walls Reverberation enhancement produced by natural energy exchange between the virtual walls elements (no artificial reverberation). ΔRT: [50%,100 %] for 125 Hz Hz Space-time coherence of the sound field is preserved Reinforced early reflections Fully natural sound picking up from stage (no source image shift). Good subjective perception of the volume Public Address possible ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 17
18 Some examples of working CARMEN Systems ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 18
19 Grimaldi Forum, Monaco Multipurpose auditorium with: -Theatre - Chamber music - Ballet - Opera - Symphonic Concert Salle des princes: V = m 3 N = 1900 seats T R = [ 1.2 s s] ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 19
20 Grimaldi Forum, Monaco 29 cells 14 lateral cells 15 cells in the ceiling 3 forestage microphones ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 20
21 Grimaldi Forum, Monaco ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 21
22 Acoustic Results in the Salle des princes, Monaco Reverberation Time TR20 (s) 4 3 Preset 6 Preset 5 RT (s) 2 sans conque avec conque Preset 4 Preset 3 Preset 2 1 Preset 1 Inactif Frequency (Hz) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 22
23 Salle des princes, Monaco Config0=Passif Config1=Théatre Config2=Opéra Config3=Concerto Config4=Symphonique Config5=Grand Symphonique 1 Config6=Grand Symphonique 2 ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 23
24 Salle des princes, Monaco ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 24
25 Brighton Dome, UK 1900 seats 30 cells : 6 in the tier front 12 in the columns below the balconies (2x6) 8 in the dome 4 over the stage ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 25
26 Acoustic Results in the Brighton Dome, UK Reverberation Time Tr 20 (s) Tr (s) 2.0 conf 0 conf conf 2 conf conf Frequency (Hz) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 26
27 Norwich Theatre Royal, UK 1280 seats cells : 14 cells on the lateral wall 3 cells below the balcony 6 cells in the ceiling 4 cells in the dome 2 forestage microphones ' ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 27
28 Acoustic Results in the Norwich Theatre Royal, UK Echograms Chorus Symphonic Concerto Chamber Music System off Gain (db B) Time (s) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 28
29 Acoustic Results in the Norwich Theatre Royal, UK Reverberation Time Passive Chamber Music Opera Concerto Symphonic Chorus RT30 (s) Frequency (Hz) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 29
30 Questions? ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 30
31 CARMEN at Berlioz Festival (La Côte Saint-André, France)? 24 cells : 8 lateral 11 in the ceiling 5 on stage ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 31
32 Acoustic Results in the covered market of Côte Saint-André Reverberation time TR20 (s) 4.00 Tr (s) Preset 1 Preset 2 Preset 3 Inactif Frequency (Hz) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 32
33 Covered market of Côte Saint-André ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 33
34 Théâtre Mogador, Paris 1800 seats 31 cells : > 18 lateral cells (2x9) > 7 cells in the dome and balcony ceiling > 6 double cells in balconies soffit 2 forestage microphones ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 34
35 Acoustic Results in the Théâtre Mogador Reverberation Time RT Tr (s) Conf 4 Conf 5 Conf 3 Conf 2 Conf 1 Passif Frequency (Hz) ACOUSTIC AND LIGHTING DEPARTEMENT CARMEN SSA - 31 octobre 2008 PAGE 35
Elektroacoustic systems
Emplacement réservé pour une photo Elektroacoustic systems Isabelle Schmich isabelle.schmich@cstb.fr and its installation in performance halls ACOUSTIC AND LIGHTING DEPARTMENT CARMEN Microtech Gefell -
More informationRECENT EXPERIENCES WITH ELECTRONIC ACOUSTIC ENHANCEMENT IN CONCERT HALLS AND OPERA HOUSES
RECENT EXPERIENCES WITH ELECTRONIC ACOUSTIC ENHANCEMENT IN CONCERT HALLS AND OPERA HOUSES David Griesinger Lexicon 3 Oak Park Bedford, MA 01730 dg@lexicon.com www.lares-lexicon.com Contents: Major Message:
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 informationActive Field Control (AFC) Reverberation Enhancement System Using Acoustical Feedback Control
Active Field Control (AFC) Reverberation Enhancement System Using Acoustical Feedback Control What is AFC? Active Field Control Electro-acoustical sound field enhancement system *Enhancement of RT and
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 informationCase study for voice amplification in a highly absorptive conference room using negative absorption tuning by the YAMAHA Active Field Control system
Case study for voice amplification in a highly absorptive conference room using negative absorption tuning by the YAMAHA Active Field Control system Takayuki Watanabe Yamaha Commercial Audio Systems, Inc.
More informationTHE ACOUSTICS OF A MULTIPURPOSE CULTURAL HALL
International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 8, August 2017, pp. 1159 1164, Article ID: IJCIET_08_08_124 Available online at http://http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=8&itype=8
More informationA COMPARISION OF ACTIVE ACOUSTIC SYSTEMS FOR ARCHITECTURE
A COMPARISION OF ACTIVE ACOUSTIC SYSTEMS FOR ARCHITECTURE A BRIEF OVERVIEW OF THE MOST WIDELY USED SYSTEMS Ron Freiheit 3 July 2001 A Comparison of Active Acoustic System for Architecture A BRIEF OVERVIEW
More information19 th INTERNATIONAL CONGRESS ON ACOUSTICS MADRID, 2-7 SEPTEMBER 2007 TRANSPARENT CONCERT HALL ACOUSTICS
th INTERNATIONAL CONGRESS ON ACOUSTICS MADRID, - SEPTEMBER 00 TRANSPARENT CONCERT HALL ACOUSTICS PACS:..Fw Van Luxemburg, Renz,, ; Hak, C.C.J.M ; Kok, B.H.M ; Van den Braak,E. LeVeL Acoustics BV; De Rondom
More informationSTUDIO ACUSTICUM A CONCERT HALL WITH VARIABLE VOLUME
STUDIO ACUSTICUM A CONCERT HALL WITH VARIABLE VOLUME Rikard Ökvist Anders Ågren Björn Tunemalm Luleå University of Technology, Div. of Sound & Vibrations, Luleå, Sweden Luleå University of Technology,
More informationIntegrated Passive and Active Room Acoustics System design solution for a large worship space
Integrated Passive and Active Room Acoustics System design solution for a large worship space David W. Kahn, LEED AP, Acoustic Distinctions, dkahn@ad-ny.com As presented at ASA Boston - 207 T his case
More informationDigitally controlled Active Noise Reduction with integrated Speech Communication
Digitally controlled Active Noise Reduction with integrated Speech Communication Herman J.M. Steeneken and Jan Verhave TNO Human Factors, Soesterberg, The Netherlands herman@steeneken.com ABSTRACT Active
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 informationAcoustic solid angle criteria in practice: transforming the Chapelle Corneille in Rouen into a concert hall
Proceedings of the Acoustics 2012 Nantes Conference 23-27 April 2012, Nantes, France Acoustic solid angle criteria in practice: transforming the Chapelle Corneille in Rouen into a concert hall Y. Jurkiewicz,
More informationSound, acoustics Slides based on: Rossing, The science of sound, 1990.
Sound, acoustics Slides based on: Rossing, The science of sound, 1990. Acoustics 1 1 Introduction Acoustics 2! The word acoustics refers to the science of sound and is a subcategory of physics! Room acoustics
More informationACOUSTICS IN THE MULTIPURPOSE HALLS OF THE NEW MAIN LIBRARY AND THE NEW MUNCH MUSEUM IN OSLO
ACOUSTICS IN THE MULTIPURPOSE HALLS OF THE NEW MAIN LIBRARY AND THE NEW MUNCH MUSEUM IN OSLO J Olshausen J H Rindel Multiconsult as, Oslo, Norway Multiconsult as, Oslo, Norway 1 INTRODUCTION This paper
More informationModeling Diffraction of an Edge Between Surfaces with Different Materials
Modeling Diffraction of an Edge Between Surfaces with Different Materials Tapio Lokki, Ville Pulkki Helsinki University of Technology Telecommunications Software and Multimedia Laboratory P.O.Box 5400,
More informationAdvanced techniques for the determination of sound spatialization in Italian Opera Theatres
Advanced techniques for the determination of sound spatialization in Italian Opera Theatres ENRICO REATTI, LAMBERTO TRONCHIN & VALERIO TARABUSI DIENCA University of Bologna Viale Risorgimento, 2, Bologna
More informationACOUSTICAL COMPUTER SIMULATIONS OF THE ANCIENT ROMAN THEATRES
ACOUSTICAL COMPUTER SIMULATIONS OF THE ANCIENT ROMAN THEATRES M.Lisa, J.H. Rindel, A.C. Gade, C.L. Christensen Technical University of Denmark, Ørsted DTU Acoustical Technology Department, Lyngby, Denmark
More informationArrayCalc simulation software V8 ArrayProcessing feature, technical white paper
ArrayProcessing feature, technical white paper Contents 1. Introduction.... 3 2. ArrayCalc simulation software... 3 3. ArrayProcessing... 3 3.1 Motivation and benefits... 4 Spectral differences in audience
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 informationMultichannel Audio Technologies. More on Surround Sound Microphone Techniques:
Multichannel Audio Technologies More on Surround Sound Microphone Techniques: In the last lecture we focused on recording for accurate stereophonic imaging using the LCR channels. Today, we look at the
More informationUniversitat Politècnica de València
Universitat Politècnica de València Escuela Técnica Superior de Ingeniería de Edificación Camino de Vera Valencia Master of Science in Engineering Technology: Construction Study of the acoustic conditioning
More informationACTIVE LOW-FREQUENCY MODAL NOISE CANCELLA- TION FOR ROOM ACOUSTICS: AN EXPERIMENTAL STUDY
ACTIVE LOW-FREQUENCY MODAL NOISE CANCELLA- TION FOR ROOM ACOUSTICS: AN EXPERIMENTAL STUDY Xavier Falourd, Hervé Lissek Laboratoire d Electromagnétisme et d Acoustique, Ecole Polytechnique Fédérale de Lausanne,
More informationUniversitat Politècnica de València
Universitat Politècnica de València Escuela Técnica Superior de Ingeniería de Edificación Camino de Vera Valencia Master of Science in Engineering Technology: Construction Study of the acoustic conditioning
More informationDetermination of directional echograms and application in room acoustics
Determination of directional echograms and application in room acoustics J.J. Embrechts, N. Werner and F. Duthoit Laboratory of Acoustics (Institut Montefiore ULg) 28/2/2007 ABAV Brugge 2007 1 Echogram
More informationSIMULATION OF CERTAIN ACOUSTIC PROPERTIES OF THE "KNEŽEV DVOR" IN DUBROVNIK
SIMULATION OF CERTAIN ACOUSTIC PROPERTIES OF THE "KNEŽEV DVOR" IN DUBROVNIK Bojan Ivančević 1, Marjan Sikora 2, Kristian Jambrošić 1 1 FER, Unska 3, Zagreb, Croatia, bojan.ivancevic@fer.hr, kristian.jambrosic@fer.hr
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 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 informationVLS 15. Technical Data Sheet. Product description. Features
Product description is a passive column array loudspeaker with a complement of 7 3.5 (89 mm) LF transducers mounted in vertical array with an assembly of densely spaced 8 1 (25 mm) HF transducers mounted
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 informationThe LOGOMO Hall. Janne Riionheimo, Henrik Möller and Anssi Ruusuvuori Akukon Ltd, Hiomotie 19, Helsinki, Finland,
The LOGOMO Hall Janne Riionheimo, Henrik Möller and Anssi Ruusuvuori Akukon Ltd, Hiomotie 19, 00380 Helsinki, Finland, janne.riionheimo@akukon.fi The Logomo Hall is a new multi-purpose venue in Turku,
More informationHolland, KR, Newell, PR, Castro, SV and Fazenda, BM
Excess phase effects and modulation transfer function degradation in relation to loudspeakers and rooms intended for the quality control monitoring of music Holland, KR, Newell, PR, Castro, SV and Fazenda,
More informationTutorial 1: Install Forecaster HD (Win XP, Vista, 7, 8)
Tutorial 1: Install Forecaster HD (Win XP, Vista, 7, 8) Download Forecaster HD (FHD) from Community s website http://www.communitypro.com/productlist/135-forecaster-ceiling-system-software Open Setup.exe
More informationAudio Engineering Society Convention Paper Presented at the 110th Convention 2001 May Amsterdam, The Netherlands
Audio Engineering Society Convention Paper Presented at the 110th Convention 2001 May 12 15 Amsterdam, The Netherlands This convention paper has been reproduced from the author's advance manuscript, without
More informationdata sheet MS-HM.01 AUDIO SYSTEM FOR INTEGRATION INTO MEDIA BOARDS
data sheet Media-series MS-HM.01 AUDIO SYSTEM FOR INTEGRATION INTO MEDIA BOARDS en Media-Series contents introduction 3 the product product description 5 Technical Documentation Tender Specification Technical
More informationAnalysis of reverberation times and energy decay curves of 1/12 octave bands in performance spaces considering musical scale
PROEEDINGS of the 22 nd International ongress on Acoustics oncert coustics: Paper IA2016-676 Analysis of reverberation times and energy decay curves of 1/12 octave bands in performance spaces considering
More informationThe Association of Loudspeaker Manufacturers & Acoustics International presents. Dr. David R. Burd
The Association of Loudspeaker Manufacturers & Acoustics International presents Dr. David R. Burd Manager of Engineering and Technical Support Free Field Technologies an MSC Company Tutorial Actran for
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 informationEQ s & Frequency Processing
LESSON 9 EQ s & Frequency Processing Assignment: Read in your MRT textbook pages 403-441 This reading will cover the next few lessons Complete the Quiz at the end of this chapter Equalization We will now
More informationLOW FREQUENCY SOUND IN ROOMS
Room boundaries reflect sound waves. LOW FREQUENCY SOUND IN ROOMS For low frequencies (typically where the room dimensions are comparable with half wavelengths of the reproduced frequency) waves reflected
More informationTHE ERATO PROJECT AND ITS CONTRIBUTION TO OUR UNDERSTANDING OF THE ACOUSTICS OF ANCIENT THEATRES
THE ERATO PROJECT AND ITS CONTRIBUTION TO OUR UNDERSTANDING OF THE ACOUSTICS OF ANCIENT THEATRES Jens Holger Rindel Odeon A/S, Scion-DTU, DK 2800 Kgs. Lyngby, Denmark e-mail: jhr@odeon.dk Abstract The
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 informationROOM ACOUSTICS MEASUREMENT AND ASSESSMENT METHODS. 1. Signal to Noise OBJECTIVE METHODS ASSESSMENT OF ROOM ACOUSTICS CAN BE DIVIDED INTO:
ROOM ACOUSTICS MEASUREMENT AND ASSESSMENT METHODS ASSESSMENT OF ROOM ACOUSTICS CAN BE DIVIDED INTO: OBJECTIVE MEASUREMENT METHODS SUBJECTIVE ASSESSMENTS OBJECTIVE METHODS 1. Signal to Noise Ratio 2. Loudness
More informationSound engineering course
Sound engineering course 1.Acustics 2.Transducers Fundamentals of acoustics: nature of sound, physical quantities, propagation, point and line sources. Psychoacoustics: sound levels in db, sound perception,
More informationMei Wu Acoustics. By Mei Wu and James Black
Experts in acoustics, noise and vibration Effects of Physical Environment on Speech Intelligibility in Teleconferencing (This article was published at Sound and Video Contractors website www.svconline.com
More informationSTUDIES OF EPIDAURUS WITH A HYBRID ROOM ACOUSTICS MODELLING METHOD
STUDIES OF EPIDAURUS WITH A HYBRID ROOM ACOUSTICS MODELLING METHOD Tapio Lokki (1), Alex Southern (1), Samuel Siltanen (1), Lauri Savioja (1), 1) Aalto University School of Science, Dept. of Media Technology,
More informationhd Columns Overview hd M-Series PointSource Stick hd C-Series hd ML-Series hd PL-Series PowerLine Stick hd M-Series 2 fullrange speaker
hd Columns Overview True 1-Way Design. For superb and linear reproduction of a sound event from the fundamental to the highest audible frequencies conventional loudspeakers have to use different types
More informationECE40020 Venue Design. Sean Obrecht, Bryan Marquet, Aditya Sharma, Ben Capano
ECE40020 Venue Design Sean Obrecht, Bryan Marquet, Aditya Sharma, Ben Capano Overview Preliminary Design Constraints Design Constraint Satisfaction Venue Illustrations Equipment Selection Results / Simulations
More informationSurround: The Current Technological Situation. David Griesinger Lexicon 3 Oak Park Bedford, MA
Surround: The Current Technological Situation David Griesinger Lexicon 3 Oak Park Bedford, MA 01730 www.world.std.com/~griesngr There are many open questions 1. What is surround sound 2. Who will listen
More informationODEON APPLICATION NOTE ISO Open plan offices Part 2 Measurements
ODEON APPLICATION NOTE ISO 3382-3 Open plan offices Part 2 Measurements JHR, May 2014 Scope This is a guide how to measure the room acoustical parameters specially developed for open plan offices according
More informationOptimizing Classroom Acoustics Using Computer Model Studies
Canadian Acoustics / Acoustique Canadienne 26(4) 15-21 (1998) Research article/article de recherche Optimizing Classroom Acoustics Using Computer Model Studies Rebecca Reich and John Bradley, Institute
More informationFLOATING WAVEGUIDE TECHNOLOGY
FLOATING WAVEGUIDE TECHNOLOGY Floating Waveguide A direct radiator loudspeaker has primarily two regions of operation: the pistonic region and the adjacent upper decade of spectrum. The pistonic region
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 informationSelecting the right directional loudspeaker with well defined acoustical coverage
Selecting the right directional loudspeaker with well defined acoustical coverage Abstract A well defined acoustical coverage is highly desirable in open spaces that are used for collaboration learning,
More informationThe Effect of Television Decors on the Change of Reverberation Time of the Studio
Open Journal of Acoustics, 2013, 3, 31-35 http://dx.doi.org/10.4236/oja.2013.32005 Published Online June 2013 (http://www.scirp.org/journal/oja) The Effect of Television Decors on the Change of Reverberation
More informationProceedings of Meetings on Acoustics
Proceedings of Meetings on Acoustics Volume 19, 2013 http://acousticalsociety.org/ ICA 2013 Montreal Montreal, Canada 2-7 June 2013 Noise Session 4aNSa: Effects of Noise on Human Performance and Comfort
More informationA BEM study of the influence of musicians on onstage sound field measures in auditoria
A BEM study of the influence of musicians on onstage sound field measures in auditoria Lily PANTON ; Damien HOLLOWAY ; School of Engineering and ICT, University of Tasmania, Hobart Australia ABSTRACT Many
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 informationMDHS Science Department SPH 3U - Student Goal Tracking Sheet
Did I watch the assigned video for this topic? Did I complete the homework for this topic? Did I complete the Journal for this topic? How successful was I with this Journal? (1 (need review) to 4 (mastered))
More informationEnvelopment and Small Room Acoustics
Envelopment and Small Room Acoustics David Griesinger Lexicon 3 Oak Park Bedford, MA 01730 Copyright 9/21/00 by David Griesinger Preview of results Loudness isn t everything! At least two additional perceptions:
More informationPerformance evaluation of voice assistant devices
ETSI Workshop on Multimedia Quality in Virtual, Augmented, or other Realities. S. Isabelle, Knowles Electronics Performance evaluation of voice assistant devices May 10, 2017 Performance of voice assistant
More informationMeasuring procedures for the environmental parameters: Acoustic comfort
Measuring procedures for the environmental parameters: Acoustic comfort Abstract Measuring procedures for selected environmental parameters related to acoustic comfort are shown here. All protocols are
More informationROOM AND CONCERT HALL ACOUSTICS MEASUREMENTS USING ARRAYS OF CAMERAS AND MICROPHONES
ROOM AND CONCERT HALL ACOUSTICS The perception of sound by human listeners in a listening space, such as a room or a concert hall is a complicated function of the type of source sound (speech, oration,
More informationOPTIMIZATION TECHNIQUES FOR PARAMETRIC MODELING OF ACOUSTIC SYSTEMS AND MATERIALS
OPTIMIZATION TECHNIQUES FOR PARAMETRIC MODELING OF ACOUSTIC SYSTEMS AND MATERIALS PACS: 43.55.Ka Matti Karjalainen, Tuomas Paatero, and Miikka Tikander Helsinki University of Technology Laboratory of Acoustics
More informationgroup D DSA250 Specifications 2-WAY FULL-RANGE DIGITALLY STEERABLE ARRAY See TABULAR DATA notes for details CONFIGURATION Subsystem Features
Features 2-Way, full-range loudspeaker for voice and music applications Vertical coverage pattern adjustable to fit the audience area Integral signal processing and amplification Built-in electronic driver
More information29th TONMEISTERTAGUNG VDT INTERNATIONAL CONVENTION, November 2016
Measurement and Visualization of Room Impulse Responses with Spherical Microphone Arrays (Messung und Visualisierung von Raumimpulsantworten mit kugelförmigen Mikrofonarrays) Michael Kerscher 1, Benjamin
More informationPERCEIVED ROOM SIZE AND SOURCE DISTANCE IN FIVE SIMULATED CONCERT AUDITORIA
Twelfth International Congress on Sound and Vibration PERCEIVED ROOM SIZE AND SOURCE DISTANCE IN FIVE SIMULATED CONCERT AUDITORIA Densil Cabrera 1, Andrea Azzali 2, Andrea Capra 2, Angelo Farina 2 and
More information19 th INTERNATIONAL CONGRESS ON ACOUSTICS MADRID, 2-7 SEPTEMBER 2007 ACOUSTICAL MEASUREMENTS IN THE ANCIENT THEATRE OF SEGESTA
19 th INTERNATIONAL CONGRESS ON ACOUSTICS MADRID, 2-7 SEPTEMBER 2007 ACOUSTICAL MEASUREMENTS IN THE ANCIENT THEATRE OF SEGESTA PACS: 43.55.Gx Farnetani, Andrea 1 ; Prodi, Nicola 1 ; Pompoli, Roberto 1
More informationTechnical Note Vol. 1, No. 10 Use Of The 46120K, 4671 OK, And 4660 Systems in Fixed instaiiation Sound Reinforcement
Technical Note Vol. 1, No. 10 Use Of The 46120K, 4671 OK, And 4660 Systems in Fixed instaiiation Sound Reinforcement Introduction: For many small and medium scale sound reinforcement applications, preassembled
More informationVLS 15. Technical Data Sheet. Product description
Product description is a passive column array loudspeaker with a complement of 7 3.5 (89 mm) LF transducers mounted in vertical array with an assembly of densely spaced 8 1 (25 mm) HF transducers mounted
More informationProduct Description. Features. Applications
Product Description The Tannoy i7 is a tall and slim loudspeaker cabinet equipped with four mm (4. ) low frequency direct radiating drive units and one 25mm (. ) titanium dome tweeter arranged as a line
More informationImpulse response. Frequency response
CLIOwin 7, by Audiomatica, is the new measurement software for the CLIO System. The CLIO System is the easiest and less expensive way to measure: - electrical networks - electronic equipment - loudspeaker
More informationValidation of lateral fraction results in room acoustic measurements
Validation of lateral fraction results in room acoustic measurements Daniel PROTHEROE 1 ; Christopher DAY 2 1, 2 Marshall Day Acoustics, New Zealand ABSTRACT The early lateral energy fraction (LF) is one
More informationIntroduction Unique Electronics
Active Speakers EX Transcoil Driver Introduction At KV2 Audio building an active speaker goes beyond simply bolting a Class D amplifier to the back of a box. The EX range has evolved over the last decade
More informationSOURCE DIRECTIVITY INFLUENCE ON MEASUREMENTS OF SPEECH PRIVACY IN OPEN PLAN AREAS Gunilla Sundin 1, Pierre Chigot 2.
SOURCE DIRECTIVITY INFLUENCE ON MEASUREMENTS OF SPEECH PRIVACY IN OPEN PLAN AREAS Gunilla Sundin 1, Pierre Chigot 2 1 Akustikon AB, Baldersgatan 4, 411 02 Göteborg, Sweden gunilla.sundin@akustikon.se 2
More informationODEON APPLICATION NOTE Calculation of Speech Transmission Index in rooms
ODEON APPLICATION NOTE Calculation of Speech Transmission Index in rooms JHR, February 2014 Scope Sufficient acoustic quality of speech communication is very important in many different situations and
More informationNew acoustical techniques for measuring spatial properties in concert halls
New acoustical techniques for measuring spatial properties in concert halls LAMBERTO TRONCHIN and VALERIO TARABUSI DIENCA CIARM, University of Bologna, Italy http://www.ciarm.ing.unibo.it Abstract: - The
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 informationProceedings of Meetings on Acoustics
Proceedings of Meetings on Acoustics Volume 19, 2013 http://acousticalsociety.org/ ICA 2013 Montreal Montreal, Canada 2-7 June 2013 Architectural Acoustics Session 1pAAa: Advanced Analysis of Room Acoustics:
More information[ PERFORMANCE-DRIVEN FORMS FOR ACOUSTIC PERFORMANCE ] ATR Contextual Study - Report MArch 1 Adam Ramsay and Martin Skarback
ATR Contextual Study - Report MArch 1 Adam Ramsay and Martin Skarback C Contents 0 Aim and Methodology p2 1 Basic Principles - Architectural Acoustics - Early Reflections - Ray Tracing Technique p3 2 Adam
More informationFOHHN FOCUS VENUE BEAM STEERING FOR CONCERT SOUND THE FUTURE OF THE LINE ARRAY
FOHHN FOCUS VENUE BEAM STEERING FOR CONCERT SOUND THE FUTURE OF THE LINE ARRAY EN 1 2 THE FUTURE OF THE LINE ARRAY IS STRAIGHT Focus Venue: When Line Array Technology Evolves and Beam Steering Reaches
More informationdatasheet TQ-310 QLIGHT SERIES ENGINEERING INFORMATION FEATURES APPLICATIONS CEW technology Trapezoidal cabinet Rotatable HF waveguide
QLIGHT SERIES ENGINEERING INFORMATION datasheet TQ-3 The TQ-3 is a trapezoidal, passive, full range twoway loudspeaker enclosure designed for use in mobile speech and music sound reinforcement applications
More informationThree-dimensional sound field simulation using the immersive auditory display system Sound Cask for stage acoustics
Stage acoustics: Paper ISMRA2016-34 Three-dimensional sound field simulation using the immersive auditory display system Sound Cask for stage acoustics Kanako Ueno (a), Maori Kobayashi (b), Haruhito Aso
More informationNatural Sound Sound Reinforcement for the Royal Albert Hall with Mundorf ProAMT
Natural Sound Sound Reinforcement for the Royal Albert Hall with Mundorf ProAMT Dieter Michel One of the greatest challenges for modern sound reinforcement technology is to make everything sound natural,
More informationApplications of Passivity Theory to the Active Control of Acoustic Musical Instruments
Applications of Passivity Theory to the Active Control of Acoustic Musical Instruments Edgar Berdahl, Günter Niemeyer, and Julius O. Smith III Acoustics 08 Conference, Paris, France June 29th-July 4th,
More informationPsychoacoustic Cues in Room Size Perception
Audio Engineering Society Convention Paper Presented at the 116th Convention 2004 May 8 11 Berlin, Germany 6084 This convention paper has been reproduced from the author s advance manuscript, without editing,
More informationIntroduction. 1.1 Surround sound
Introduction 1 This chapter introduces the project. First a brief description of surround sound is presented. A problem statement is defined which leads to the goal of the project. Finally the scope of
More informationSound Systems: Design and Optimization
Sound Systems: Design and Optimization Modern techniques and tools for sound System design and alignment Bob McCarthy ELSEVIER AMSTERDAM BOSTON HEIDELBERG LONDON NEW YORK OXFORD PARIS SAN DIEGO SAN FRANCISCO
More informationPNC France Paneling system High performance insulation and sound absorption for the practice and recording music at home.
Cabin acoustic AudioCab Studio Soundproof booths kit high performance insulation and sound absorption for the practice and recording music at home. Absorption Alpha Sabine : 9 % Sound attenuation Rw :
More informationBACKGROUND NOISE LEVELS IN STUDIOS AND AUDITORIA
BACKGROUND NOISE LEVELS IN STUDIOS AND AUDITORIA A. James To cite this version: A. James. BACKGROUND NOISE LEVELS IN STUDIOS AND AUDITORIA. Journal de Physique Colloques, 1990, 51 (C2), pp.c2-1097-c2-1100.
More informationContents 2. I StepArray: tutorial for recommandation 4. 1 Sound reinforcement in large spaces 5. 2 Overview of the StepArray system 9
CONTENTS Contents Contents 2 I StepArray: tutorial for recommandation 4 1 Sound reinforcement in large spaces 5 2 Overview of the StepArray system 9 3 Choosing the right installation set-up 12 4 Column
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 informationThe MeR system - multiple-channel amplification. The reverberation. S. H. de Koning. Reverberation time
12 Philips Tech. Rev. 41, 1223,1983/84, No. I The MeR system multiplechannel amplification of reverberation S. H. de Koning '... and no discussion was held as to the advantages and disadvantages of reverberation.
More informationThe NEVATON BPT - "Blumlein-Pfanzagl-Triple" 3-capsule Stereo- and Surround-Microphone with Center-Zoom Function: ready for 5.1, 7.
The NEVATON BPT - "Blumlein-Pfanzagl-Triple" 3-capsule Stereo- and Surround-Microphone with Center-Zoom Function: ready for 5.1, 7.1 and beyond USER MANUAL Vers. 1.3 Ser. # 1 0. Preamble Why build a 3
More informationPhys 107 Sound Physics Lect 10, Ch 15 pt.1 1
Phys 107 Sound Physics Lect 10, Ch 15 pt.1 1 Tu. /5: Ch 5 Intensity and Measurement Th. /7: Ch 15 Room Acoustics Tu. /1: Review Th. /14: Exam 1 (Ch 1,,3,4, 5,15) HW5: Ch5: 1 W,3 W,6 W,11 W,1,14 W Ch15:,3
More informationdatasheet TQ-315 QLIGHT SERIES ENGINEERING INFORMATION FEATURES APPLICATIONS CEW technology Trapezoidal cabinet Rotatable HF waveguide
The is a trapezoidal, switchable active/passive, full range two-way loudspeaker enclosure designed for use in mobile speech and music sound reinforcement applications as well as in a wide range of fixed
More informationSmall Room and Loudspeaker Interaction
The common questions Several common questions are often asked related to loudspeaker s sound reproduction, such as: 1. Why does a loudspeaker sound different when moved to another room? 2. Why does my
More informationWhat applications is a cardioid subwoofer configuration appropriate for?
SETTING UP A CARDIOID SUBWOOFER SYSTEM Joan La Roda DAS Audio, Engineering Department. Introduction In general, we say that a speaker, or a group of speakers, radiates with a cardioid pattern when it radiates
More informationPRELIMINARY STUDY ON THE SPEECH PRIVACY PERFORMANCE OF THE FABPOD
PRELIMINARY STUDY ON THE SPEECH PRIVACY PERFORMANCE OF THE FABPOD Xiaojun Qiu 1, Eva Cheng 1, Ian Burnett 1, Nicholas Williams 2, Jane Burry 2 and Mark Burry 2 1 School of Electrical and Computer Engineering
More information