Speech Quality Assessment for Wideband Communication Scenarios
|
|
|
- Joleen Cooper
- 5 years ago
- Views:
Transcription
1 Speech Quality Assessment for Wideband Communication Scenarios H. W. Gierlich, S. Völl, F. Kettler (HEAD acoustics GmbH) P. Jax (IND, RWTH Aachen) Workshop on Wideband Speech Quality in Terminals and Networks supported by:
2 Outline General aspects of speech quality in wideband systems Subjective evaluations Conversational tests Speech intelligibility Background noise transmission Echo tests Summary
3 Speech Quality Parameters from the user s perspective talking situation speech quality listening situation conversational situation
4 Auditory Parameters contributing to speech quality: Narrow band (Speech) sound quality Loudness Quality of background noise transmission Delay and echo Double talk capability Switching and echo single talk/double talk (System) noise Wide band Different quality perception Loudness (WB) Different quality Perception? Different quality Perception? Double talk capability Different quality Perception? Different quality Perception
5 Roadmap for the development of objective measurements 1. Conversational tests! parameter identification (qualitative) 2. Listening-only tests! quantitative judgement 3. Development of objective measurement methods to reproduce the results of the LOT! Quality evaluation of wideband systems without subjective tests
6 Outline General aspects of speech quality in wideband systems Subjective evaluations Conversational tests Speech intelligibility Background noise transmission Echo tests Summary
7 Conversational Tests Purpose: identification of parameters characterizing the communicational quality in wideband systems Test conditions: Experts tests Kandisky -test 4 wideband codecs under test 3 conditions for each codec: normal conversation, with music in office room, with babble in office room free answering
8 Setup and test procedure Setup: normal office HFT 1 EC&CC Codec A, B, C HFT 2 EC off Sound-proof cabinet G.722 G.722 PC for BGN Test procedure: Different codecs included One echo-canceller for all tests
9 Results Sorting the comments in categories: Speech sound quality, echo behavior, Quality of background noise, others (e.g. noise, clipping) Example: speech sound quality codec comments G.722 AMR-WB AMR-WB2 BWE sounds naturally, high dynamic... sounds rough, naturally, distorted,... high dynamic, hollow, clank,... rattles, crackles, blunt sound,...
10 Conclusion Relevant parameters to be studied further: sound of speech Echo: level, masking, intelligibility quality of background noise transmission Noise Double talk Switching/clipping Design of listening-only tests concerning speech intelligibility: narrow band vs. wide band quality of transmitted background noise annoyance of echo
11 Outline General aspects of speech quality in wideband systems Subjective evaluations Conversational tests Speech intelligibility Background noise transmission Echo tests Summary
12 Speech intelligibility test Sensitive test: logatom-test Consonant vowel consonant Informal test: 3x 12 test persons, 29 logatoms Test persons note the word they understood
13 Recording & Listening Recording: normal office PCM / AMR-WB / ISDN Sound-proof cabinet PC Listening: test persons listen to the artificial head recordings
14 Results Increased intelligibility for wideband codecs % correct logatoms % 4 logatoms ISDN PCM 16 bit AMR 12,65 kbit/s codec
15 Outline General aspects of speech quality in wideband systems Subjective evaluations Conversational tests Speech intelligibility Background noise transmission Echo tests Summary
16 Background noise assessment: music Background noise: additional information about talkers environment Tests with untrained persons: assessment on a 5 point MOS scale experts: assessment on a 5 point MOS scale and giving reasons why 16 different codecs under test
17 Background noise tests Recording listening samples: normal office HFT 1 codec or filter HFT 2 sound-proof cabinet PC for BGN PC Listening: test persons listen to artificial head recordings ACR scale: excellent good fair poor bad
18 5 Results 3 quality levels with significantly different MOS - values Quality of transmitted background music MOS-LQS - wideband - good intelligibility of music PCM G722 MP3 G G.722-HP ISDN G.722-NB BWE-U Codec AMR8 G.722-TP BWE-O BWE-U+O AMR-2 IND0 AMR2CN AMR-0 - narrowband - good intelligibility of music - mostly wideband - bad intelligibility of music
19 Outline General aspects of speech quality in wideband systems Subjective evaluations Conversational tests Speech intelligibility Background noise transmission Echo tests Summary
20 Echo annoyance test Using hands-free telephones! echo disturbances a dominant problem Investigation of the annoying aspects of echo using wide-band links: influence of echo sound, influence of echo level, influence of codec,... Mean one-way transmission time constant for all listening samples: 170 ms
21 Echo annoyance tests Recording: normal office echo HFT 1 EC off CC off codec or filter PC HFT 2 EC on CC on sound-proof cabinet Listening: test persons listen to the artificial head recordings:! direct speech + echo
22 Tests & assessment Tests with untrained persons: assessment on a 5 point MOS scale experts: assessment on a 5 point MOS scale and giving reasons why DCR scale: 5 echo is inaudible 4 echo is audible, but not annoying 3 echo is slightly annoying 2 echo is annoying 1 echo is very annoying
23 Echo levels TCLw acc. ITU-T P.79 normal office HFT 1 echo RLR EC off CC off TCLw = 27 db! low echo level 21 db! medium echo level 13 db! high echo level Note: hands-free on boths sides, SLR = 7dB, RLR = 5dB (including HFT correction of 14 db) => TELR(max) = 39dB! Investigation of codec and echo level
24 Results Comparision of annoyance by echo level (experts) 5 Echo annoyance high echo level medium echo level low echo level MOS-LQS PCM G MP3 G722 AMR, 12 kbit/s AMR WB 2, 12 kbit/s BWE ISDN codec!differences for echos with the same echo level!echo masked by direct speech
25 Influence of the bandwidth Filtering of the echo signal db 30 Filter wideband wideband f>300 Hz wideband f<3400 narrow band narrow band lv. Adj low freq. increased low freq. decreased high freq. increased high freq. strongly increased > f/hz Speech modulated noise (two examples) Level adjustment to TCLw =! medium echo level
26 Results echo annoyance: dependency on bandwidth trained untrained significant differences between experts and untrained test persons wide-band f < 3400 Hz narrow-band narrow-band lv. adj. low freq. increased low freq. decreased high freq. increased high freq. strongly increased echo = modulated with noise echo = noise Variante wide-band wide-band f > 300 Hz MOS-LQS
27 Results echo annoyance High frequencies! very annoying Wide-band and low freq.! slightly annoying Experts more critical than untrained test persons Speech modulated noisy echo: Experts: very annoying! no advantages Untrained: felt insecure
28 Summary (1) Background noise transmission - relevant aspects: Bandwidth intelligibility / brightness / low distortion (small difference to the original) Echo annoyance - relevant aspects: Level Masking properties Distortion and frequency characteristics Additional parameters to be investigated subjectively: Noise Switching/clipping Double talk behavior
29 Summary (2) To do: Additional subjective testing Deriving/Adaptation of methods to measure Sound quality Echo Background noise transmission Double talk performance Switching/clipping Noise
Conversational Speech Quality - The Dominating Parameters in VoIP Systems
Conversational Speech Quality - The Dominating Parameters in VoIP Systems H.W. Gierlich, F. Kettler HEAD acoustics GmbH Typical IP-Scenarios: components and their influence on speech quality testing techniques
Speech quality for mobile phones: What is achievable with today s technology?
Speech quality for mobile phones: What is achievable with today s technology? Frank Kettler, H.W. Gierlich, S. Poschen, S. Dyrbusch HEAD acoustics GmbH, Ebertstr. 3a, D-513 Herzogenrath Frank.Kettler@head-acoustics.de
Practical Limitations of Wideband Terminals
Practical Limitations of Wideband Terminals Dr.-Ing. Carsten Sydow Siemens AG ICM CP RD VD1 Grillparzerstr. 12a 8167 Munich, Germany E-Mail: sydow@siemens.com Workshop on Wideband Speech Quality in Terminals
Speech Quality in modern Network-Terminal Configurations
Speech Quality in modern Network-Terminal Configurations H. W. Gierlich HEAD acoustics GmbH ESTI STQ-workshop: Effect of transmission performance on Multimedia Quality of Service 17-19 June 2008 - Prague,
Test Report. 4 th ITU Test Event on Compatibility of Mobile Phones and Vehicle Hands-free Terminals th September 2017
Test Report th ITU Test Event on Compatibility of Mobile Phones and Vehicle Hands-free Terminals 26-27 th September 217 ITU 217 Background Following the rd Test Event [5] and the associated Roundtable
Factors impacting the speech quality in VoIP scenarios and how to assess them
HEAD acoustics Factors impacting the speech quality in Vo scenarios and how to assess them Dr.-Ing. H.W. Gierlich HEAD acoustics GmbH Ebertstraße 30a D-52134 Herzogenrath, Germany Tel: +49 2407/577 0!
Perceptual wideband speech and audio quality measurement. Dr Antony Rix Psytechnics Limited
Perceptual wideband speech and audio quality measurement Dr Antony Rix Psytechnics Limited Agenda Background Perceptual models BS.1387 PEAQ P.862 PESQ Scope Extension to wideband Performance of wideband
End-to-End Speech Quality Testing in a Complex Transmission Scenario
End-to-End Speech Quality Testing in a Complex Transmission Scenario F. Kettler*, H.W. Gierlich*, J. Berger**, H. Klaus**, I. Kliche**, K.-D. Michael**, T. Scheerbarth**, R. Scholl***, J.-L. Freisse****
Near-end Listening Enhancement Algorithms
Near-end Listening Enhancement Algorithms Approaches for measurement and evaluation Jan Reimes HEAD acoustics GmbH Vienna, 2015/10/21 Overview Introduction Detection & Measurement Recording Procedure Measurement
The new ITU-T Work on Speech communication requirements for emergency calls originating from vehicles
The new ITU-T Work on Speech communication requirements for emergency calls originating from vehicles H. W. Gierlich Managing Director Telecom HEAD acoustics Rapporteur Q.4 ITU-T SG12 A Typical Emergency
Acoustics of wideband terminals: a 3GPP perspective
Acoustics of wideband terminals: a 3GPP perspective Orange Labs Stéphane RAGOT Orange Delegate in 3GPP & 3GPP SA4 Vice-Chair Co-Rapporteur of 3GPP work item on "Requirements and Test Methods for Wideband
Application Note 3PASS and its Application in Handset and Hands-Free Testing
Application Note 3PASS and its Application in Handset and Hands-Free Testing HEAD acoustics Documentation This documentation is a copyrighted work by HEAD acoustics GmbH. The information and artwork in
Quality comparison of wideband coders including tandeming and transcoding
ETSI Workshop on Speech and Noise In Wideband Communication, 22nd and 23rd May 2007 - Sophia Antipolis, France Quality comparison of wideband coders including tandeming and transcoding Catherine Quinquis
NOISE SHAPING IN AN ITU-T G.711-INTEROPERABLE EMBEDDED CODEC
NOISE SHAPING IN AN ITU-T G.711-INTEROPERABLE EMBEDDED CODEC Jimmy Lapierre 1, Roch Lefebvre 1, Bruno Bessette 1, Vladimir Malenovsky 1, Redwan Salami 2 1 Université de Sherbrooke, Sherbrooke (Québec),
Speech communication in cars goes wideband the new ITU-T T Focus Group CarCom
1 Speech communication in cars goes wideband the new ITU-T T Focus Group CarCom H.W. Gierlich HEAD acoustics GmbH Chair of ITU-T FG CarCom Outline 2 o The stakeholders o The goals o The challenges o Schedule
INTERNATIONAL TELECOMMUNICATION UNION
INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.107.1 (06/2015) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS International telephone
3GPP TS V ( )
TS 26.131 V10.1.0 (2011-03) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Terminal acoustic characteristics for telephony; Requirements
International Telecommunication Union. Speech Quality Testing for VoIP Terminals and Gateways: Input from ETSI Plugtest
International Telecommunication Union Speech Quality Testing for VoIP Terminals and Gateways: Input from ETSI Plugtest Plugtest Speech Quality Test Events H. W. Gierlich HEAD acoustics GmbH Geneva, 14-16
3GPP TS V4.2.0 ( )
TS 26.131 V4.2.0 (2002-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Terminal Acoustic Characteristics for Telephony; Requirements
ETSI TR V1.1.1 ( )
TR 102 648-1 V1.1.1 (2006-12) Technical Report Speech Processing, Transmission and Quality Aspects (STQ); Test Methodologies for Test Events and Results; Part 1: VoIP Speech Quality Testing 2 TR 102 648-1
3GPP TS V ( )
TS 26.131 V13.3.0 (2016-06) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Terminal acoustic characteristics for telephony; Requirements
Speech Technologies in Cars and the Role of ITU-T
1 Speech Technologies in Cars and the Role of ITU-T H. W. Gierlich HEAD acoustics GmbH Chairman of ITU-T FG CarCom Why Speech Technologies 2 The driving task mostly occupied: visual system mainly involved:
ETSI TS V5.2.0 ( )
TS 126 131 V5.2.0 (2002-09) Technical Specification Universal Mobile Telecommunications System (UMTS); Terminal acoustic characteristics for telephony; Requirements (3GPP TS 26.131 version 5.2.0 Release
SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Voice terminal characteristics
International Telecommunication Union ITU-T P.341 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2011) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Voice terminal characteristics
EUROPEAN pr I-ETS TELECOMMUNICATION June 1996 STANDARD
INTERIM DRAFT EUROPEAN pr I-ETS 300 302-1 TELECOMMUNICATION June 1996 STANDARD Second Edition Source: ETSI TC-TE Reference: RI/TE-04042 ICS: 33.020 Key words: ISDN, telephony, terminal, video Integrated
Technical Report Speech and multimedia Transmission Quality (STQ); Speech samples and their usage for QoS testing
Technical Report Speech and multimedia Transmission Quality (STQ); Speech samples and their usage for QoS testing 2 Reference DTR/STQ-00196m Keywords QoS, quality, speech 650 Route des Lucioles F-06921
3GPP TS V ( )
TS 26.131 V10.3.0 (2011-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Terminal acoustic characteristics for telephony; Requirements
Improving Sound Quality by Bandwidth Extension
International Journal of Scientific & Engineering Research, Volume 3, Issue 9, September-212 Improving Sound Quality by Bandwidth Extension M. Pradeepa, M.Tech, Assistant Professor Abstract - In recent
INTERIM EUROPEAN I-ETS TELECOMMUNICATION December 1994 STANDARD
INTERIM EUROPEAN I-ETS 300 302-1 TELECOMMUNICATION December 1994 STANDARD Source: ETSI TC-TE Reference: DI/TE-04008.1 ICS: 33.080 Key words: ISDN, videotelephony terminals, audio Integrated Services Digital
Telecom. Sound Scenarios. Devices. Speech Quality Communication Quality Analysis. Speech Intelligibility. Accessories Analysis Methods.
Fall 2014 No. 12 Telecom HEADlines MSA I Software Telecommunication Audio Requirements Turntable Support Background Noise Simulation ACOPT 32 Radio Broadcast Signal Fast VoIP 3PASS Audio Microphone Speech
Bandwidth Extension for Speech Enhancement
Bandwidth Extension for Speech Enhancement F. Mustiere, M. Bouchard, M. Bolic University of Ottawa Tuesday, May 4 th 2010 CCECE 2010: Signal and Multimedia Processing 1 2 3 4 Current Topic 1 2 3 4 Context
Instrumental Assessment of Near-end Perceived Listening Effort
5th ISCA/DEGA Workshop on Perceptual Quality of Systems (PQS 2016) 29-31 August 2016, Berlin, Germany Instrumental Assessment of Near-end Perceived Listening Effort Jan Reimes HEAD acoustics GmbH, Herzogenrath,
ETSI TS V1.1.1 ( )
TS 102 925 V1.1.1 (2013-03) Technical Specification Speech and multimedia Transmission Quality (STQ); Transmission requirements for Superwideband/Fullband handsfree and conferencing terminals from a QoS
Telephone Speech Quality Standards. for. Wideband IP Phone Terminals (handsets) CES-Q March 30, 2009
Telephone Speech Quality Standards for Wideband IP Phone Terminals (handsets) CES-Q004-1 1. V.0 March 30, 2007 2. V.0 March 30, 2008 3. V.0 November 10, 2008 March 30, 2009 Communications and Information
ETSI TS V ( )
TS 126 131 V15.0.0 (2018-07) TECHNICAL SPECIFICATION Universal Mobile Telecommunications System (UMTS); LTE; Terminal acoustic characteristics for telephony; Requirements (3GPP TS 26.131 version 15.0.0
INTERNATIONAL TELECOMMUNICATION UNION
INTERNATIONAL TELECOMMUNICATION UNION ITU-T P.862 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2001) SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Methods
Final draft ETSI EG V1.1.1 ( )
Final draft EG 202 396-3 V1.1.1 (2007-05) Guide Speech Processing, Transmission and Quality Aspects (STQ); Speech Quality performance in the presence of background noise Part 3: Background noise transmission
Draft Recommendation P.emergency. Speech communication requirements for emergency calls originating from vehicles V0.43. Summary.
Draft Recommendation P.emergency Speech communication requirements for emergency calls originating from vehicles V0.43 Summary History Keywords Hands-free, headset, motor vehicle, quality of service, QoS.
ETSI TS V ( )
TS 126 131 V10.4.0 (2012-01) Technical Specification Universal Mobile Telecommunications System (UMTS); LTE; Terminal acoustic characteristics for telephony; Requirements (3GPP TS 26.131 version 10.4.0
Final draft ETSI EG V1.2.1 ( )
Final draft EG 0 396-3 V.. (008-) Guide Speech Processing, Transmission and Quality Aspects (STQ); Speech Quality performance in the presence of background noise Part 3: Background noise transmission -
Speech Quality Evaluation of Artificial Bandwidth Extension: Comparing Subjective Judgments and Instrumental Predictions
INTERSPEECH 01 Speech Quality Evaluation of Artificial Bandwidth Extension: Comparing Subjective Judgments and Instrumental Predictions Hannu Pulakka 1, Ville Myllylä 1, Anssi Rämö, and Paavo Alku 1 Microsoft
3GPP TS V ( )
TS 26.132 V11.0.0 (2012-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Speech and video telephony terminal acoustic test specification
Gerhard Schmidt / Tim Haulick Recent Tends for Improving Automotive Speech Enhancement Systems. Geneva, 5-7 March 2008
Gerhard Schmidt / Tim Haulick Recent Tends for Improving Automotive Speech Enhancement Systems Speech Communication Channels in a Vehicle 2 Into the vehicle Within the vehicle Out of the vehicle Speech
Deriving Equipment Impairment Factors for Wideband Speech Codecs
Deriving Equipment Impairment Factors for Wideband Speech Codecs Sebastian Möller 1, Alexander Raake 1, Vincent Barriac 2, Catherine Quinquis 2 1 IKA, Ruhr-University Bochum, Germany 2 France Télécom R&D,
Test Report. 3 rd ITU Test Event: Performance Assessment of Mobile Phones as Gateways to Car Hands-free Systems November 2016
Test Report rd ITU Test Event: Performance Assessment of Mobile Phes as Gateways to Car Hands-free Systems 15-16 November 216 ITU 217 Test Report: Performance Assessment of Mobile Phes as Gateways to Car
3GPP TS V ( )
TS 26.132 V10.2.0 (2011-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Speech and video telephony terminal acoustic test specification
-/$5,!4%$./)3% 2%&%2%.#% 5.)4 -.25
INTERNATIONAL TELECOMMUNICATION UNION )454 0 TELECOMMUNICATION (02/96) STANDARDIZATION SECTOR OF ITU 4%,%0(/.% 42!.3-)33)/. 15!,)49 -%4(/$3 &/2 /"*%#4)6%!.$ 35"*%#4)6%!33%33-%.4 /& 15!,)49 -/$5,!4%$./)3%
Analytical Analysis of Disturbed Radio Broadcast
th International Workshop on Perceptual Quality of Systems (PQS 0) - September 0, Vienna, Austria Analysis of Disturbed Radio Broadcast Jan Reimes, Marc Lepage, Frank Kettler Jörg Zerlik, Frank Homann,
The Emergence, Introduction and Challenges of Wideband Choice Codecs in the VoIP Market
5 th Nov, 2008 The Emergence, Introduction and Challenges of Wideband Choice Codecs in the VoIP Market PN101 Roger Chung of Freescale Semiconductor, Inc. All other product or service names are the property
ETSI EG V1.3.1 ( ) ETSI Guide
EG 0 396-3 V.3. (0-0) Guide Speech and multimedia Transmission Quality (STQ); Speech Quality performance in the presence of background noise Part 3: Background noise transmission - Objective test methods
Technical Report Speech and multimedia Transmission Quality (STQ); Adaptation of the ETSI QoS Model to better consider results from field testing
Technical Report Speech and multimedia Transmission Quality (STQ); Adaptation of the QoS Model to better consider results from field testing 2 Reference DTR/STQ-189 Keywords delay, E-Model, QoS, quality
SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Communications involving vehicles
I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T P.1110 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (01/2015) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT
ITU-T P.863. Amendment 1 (11/2011)
International Telecommunication Union ITU-T P.863 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1 (11/2011) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Methods for objective
ORIGINAL ARTICLE A COMPARATIVE STUDY OF QUALITY ANALYSIS ON VARIOUS IMAGE FORMATS
ORIGINAL ARTICLE A COMPARATIVE STUDY OF QUALITY ANALYSIS ON VARIOUS IMAGE FORMATS 1 M.S.L.RATNAVATHI, 1 SYEDSHAMEEM, 2 P. KALEE PRASAD, 1 D. VENKATARATNAM 1 Department of ECE, K L University, Guntur 2
TECHNICAL REPORT Speech and multimedia Transmission Quality (STQ); Speech samples and their use for QoS testing
TR 103 138 V1.3.1 (2015-03) TECHNICAL REPORT Speech and multimedia Transmission Quality (STQ); Speech samples and their use for QoS testing 2 TR 103 138 V1.3.1 (2015-03) Reference RTR/STQ-00203m Keywords
ETSI TS V ( )
TS 126 131 V12.3.0 (2015-01) TECHNICAL SPECIFICATION Universal Mobile Telecommunications System (UMTS); LTE; Terminal acoustic characteristics for telephony; Requirements (3GPP TS 26.131 version 12.3.0
SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Communications involving vehicles
International Telecommunication Union ITU-T P.1110 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (12/2009) SERIES P: TERMINALS AND SUBJECTIVE AND OBJECTIVE ASSESSMENT METHODS Communications involving
ETSI EG V1.4.1 ( )
EG 202 396-3 V1.4.1 (2014-06) Guide Speech and multimedia Transmission Quality (STQ); Speech Quality performance in the presence of background noise; Part 3: Background noise transmission - Objective test
TECHNICAL TBR 8 BASIS for October 1998 REGULATION
TECHNICAL TBR 8 BASIS for October 1998 REGULATION Second Edition Source: DTA Reference: RTBR/DTA-004044 ICS: 33.020 Key words: ISDN, telephony, 3,1 khz, teleservice, terminal Integrated Services Digital
35"*%#4)6% 0%2&/2-!.#%!33%33-%.4 /& 4%,%0(/.%"!.$!.$ 7)$%"!.$ $)')4!, #/$%#3
INTERNATIONAL TELECOMMUNICATION UNION )454 0 TELECOMMUNICATION (02/96) STANDARDIZATION SECTOR OF ITU 4%,%0(/.% 42!.3-)33)/. 15!,)49 -%4(/$3 &/2 /"*%#4)6%!.$ 35"*%#4)6%!33%33-%.4 /& 15!,)49 35"*%#4)6% 0%2&/2-!.#%!33%33-%.4
INTERNATIONAL TELECOMMUNICATION UNION
INTERNATIONAL TELECOMMUNICATION UNION ITU-T P.835 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (11/2003) SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Methods
SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Communications involving vehicles
I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T P.1100 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2017) SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS,
Factors Governing the Intelligibility of Speech Sounds
HSR Journal Club JASA, vol(19) No(1), Jan 1947 Factors Governing the Intelligibility of Speech Sounds N. R. French and J. C. Steinberg 1. Introduction Goal: Determine a quantitative relationship between
ETSI EG V1.6.1 ( )
EG 202 396-3 V1.6.1 (2017-01) GUIDE Speech and multimedia Transmission Quality (STQ); Speech Quality performance in the presence of background noise; Part 3: Background noise transmission - Objective test
ETSI TS V1.1.1 ( ) Technical Specification
TS 103 738 V1.1.1 (2009-11) Technical Specification Speech and multimedia Transmission Quality (STQ); Transmission requirements for narrowband wireless terminals (handsfree) from a QoS perspective as perceived
Transcoding free voice transmission in GSM and UMTS networks
Transcoding free voice transmission in GSM and UMTS networks Sara Stančin, Grega Jakus, Sašo Tomažič University of Ljubljana, Faculty of Electrical Engineering Abstract - Transcoding refers to the conversion
Bandwidth Efficient Mixed Pseudo Analogue-Digital Speech Transmission
Bandwidth Efficient Mixed Pseudo Analogue-Digital Speech Transmission Carsten Hoelper and Peter Vary {hoelper,vary}@ind.rwth-aachen.de ETSI Workshop on Speech and Noise in Wideband Communication 22.-23.
3GPP TS V ( )
TS 26.132 V12.7.0 (2015-09) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Speech and video telephony terminal acoustic test specification
Bandwidth Extension of Speech Signals: A Catalyst for the Introduction of Wideband Speech Coding?
WIDEBAND SPEECH CODING STANDARDS AND WIRELESS SERVICES Bandwidth Extension of Speech Signals: A Catalyst for the Introduction of Wideband Speech Coding? Peter Jax and Peter Vary, RWTH Aachen University
Different Approaches of Spectral Subtraction Method for Speech Enhancement
ISSN 2249 5460 Available online at www.internationalejournals.com International ejournals International Journal of Mathematical Sciences, Technology and Humanities 95 (2013 1056 1062 Different Approaches
Auditory System For a Mobile Robot
Auditory System For a Mobile Robot PhD Thesis Jean-Marc Valin Department of Electrical Engineering and Computer Engineering Université de Sherbrooke, Québec, Canada Jean-Marc.Valin@USherbrooke.ca Motivations
ETSI EN V1.8.1 ( )
EN 300 175-8 V1.8.1 (2004-11) European Standard (Telecommunications series) Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 8: Speech coding and transmission 2 EN 300 175-8
HOW TO CHOOSE AN ACOUSTIC ECHO CANCELLER
HOW TO CHOOSE AN ACOUSTIC ECHO CANCELLER TABLE OF CONTENTS 1. INTRODUCTION 2 2. OVERVIEW OF AEC 3 3. HOW AN AEC WORKS 4 4. WHY NOT USE A SPEAKERPHONE 5 5. ACOUSTIC ECHO VS. LINE ECHO 6 6. STEPS TO CHOOSING
Subjective Voice Quality Evaluation of Artificial Bandwidth Extension: Comparing Different Audio Bandwidths and Speech Codecs
INTERSPEECH 01 Subjective Voice Quality Evaluation of Artificial Bandwidth Extension: Comparing Different Audio Bandwidths and Speech Codecs Hannu Pulakka 1, Anssi Rämö, Ville Myllylä 1, Henri Toukomaa,
ON THE PERFORMANCE OF WTIMIT FOR WIDE BAND TELEPHONY
ON THE PERFORMANCE OF WTIMIT FOR WIDE BAND TELEPHONY D. Nagajyothi 1 and P. Siddaiah 2 1 Department of Electronics and Communication Engineering, Vardhaman College of Engineering, Shamshabad, Telangana,
Final draft ETSI ES V1.5.1 ( )
Final draft ES 202 740 V1.5.1 (2016-10) STANDARD Speech and multimedia Transmission Quality (STQ); Transmission requirements for wideband VoIP loudspeaking and handsfree terminals from a QoS perspective
ETSI ES V1.3.1 ( ) ETSI Standard
Standard Speech and multimedia Transmission Quality (STQ); Transmission requirements for wideband VoIP terminals (handset and headset) from a QoS perspective as perceived by the user 2 Reference RES/STQ-00125
ETSI TS V (201
TS 126 132 V13.1.0 (201 16-01) TECHNICAL SPECIFICATION Universal Mobile Telecommunications System (UMTS); LTE; Speech and video telephony terminal acoustic test specification (3GPP TS 26.132 version 13.1.0
SPECIFICATION of the GENERIC TRANSMISSION INTERFACE. Interconnection Specification 1. Page 1 of 9
SPECIFICATION of the GENERIC TRANSMISSION INTERFACE Interconnection Specification 1 Page 1 of 9 Index: 1 General 2 Responsibilities 3 Relevant Parameters 4 Overall Transmission Loss 4.1 Loudness Rating
COM 12 C 288 E October 2011 English only Original: English
Question(s): 9/12 Source: Title: INTERNATIONAL TELECOMMUNICATION UNION TELECOMMUNICATION STANDARDIZATION SECTOR STUDY PERIOD 2009-2012 Audience STUDY GROUP 12 CONTRIBUTION 288 P.ONRA Contribution Additional
3 Comparison of the P.57 type 3.4 simulator to human ears
INTERNATIONAL TELECOMMUNICATION UNION TELECOMMUNICATION STANDARDIZATION SECTOR STUDY PERIOD 1997-2000 COM 12-41-E Febr. 1998 Original: English Questions: 6/12, 14/12, SQEG STUDY GROUP 12 - CONTRIBUTION
Pattern Recognition. Part 6: Bandwidth Extension. Gerhard Schmidt
Pattern Recognition Part 6: Gerhard Schmidt Christian-Albrechts-Universität zu Kiel Faculty of Engineering Institute of Electrical and Information Engineering Digital Signal Processing and System Theory
ETSI TS V ( )
TS 126 132 V14.1.0 (2017-07) TECHNICAL SPECIFICATION Universal Mobile Telecommunications System (UMTS); LTE; Speech and video telephony terminal acoustic test specification (3GPP TS 26.132 version 14.1.0
BCM Echo Cancelation Overview and Limitations
BCM Technical Tip Release Date: 2011/05/13 Region: GLOBAL BCM Echo Cancelation Overview and Limitations Purpose of this bulletin The purpose of this bulletin is to describe how the echo cancellation works
Super-Wideband Fine Spectrum Quantization for Low-rate High-Quality MDCT Coding Mode of The 3GPP EVS Codec
Super-Wideband Fine Spectrum Quantization for Low-rate High-Quality DCT Coding ode of The 3GPP EVS Codec Presented by Srikanth Nagisetty, Hiroyuki Ehara 15 th Dec 2015 Topics of this Presentation Background
ETSI TS V1.3.1 ( )
TS 103 737 V1.3.1 (2018-10) TECHNICAL SPECIFICATION Speech and multimedia Transmission Quality (STQ); Transmission requirements for narrowband wireless terminals (handset and headset) from a QoS perspective
Improving a Transmission Planning Tool by Adding Acoustic Factors
MASTER S THESIS 2009:028 CIV Improving a Transmission Planning Tool by Adding Acoustic Factors LULEÅ UNIVERSITY OF TECHNOLOGY Timmy Kristoffersson MASTER OF SCIENCE PROGRAMME Media Technology Luleå University
Meetings Attended (C= Contribution, A= Attended Meeting) Organization Represented. Ken Macdonald (Chair) Roger Britt (Editor) Ron Magnuson
TR-41.3.3-05-02-003 Telecommunications Telephone Terminal Equipment Transmission Requirements for Narrowband Voice over IP and Voice over PCM Digital Wireline Telephones SP-3-4352-RV2 (to become ANSI/TIA-810-B)
SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Voice terminal characteristics
I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T P.381 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2017) SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS,
ETSI ES V1.7.1 ( )
ES 202 737 V1.7.1 (2017-09) STANDARD Speech and multimedia Transmission Quality (STQ); Transmission requirements for narrowband VoIP terminals (handset and headset) from a QoS perspective as perceived
ETSI TS V1.2.1 ( )
TS 103 738 V1.2.1 (2017-07) TECHNICAL SPECIFICATION Speech and multimedia Transmission Quality (STQ); Transmission requirements for narrowband wireless terminals (handsfree) from a QoS perspective as perceived
ZLS38500 Firmware for Handsfree Car Kits
Firmware for Handsfree Car Kits Features Selectable Acoustic and Line Cancellers (AEC & LEC) Programmable echo tail cancellation length from 8 to 256 ms Reduction - up to 20 db for white noise and up to
Review of recent standardization activities in speech quality of experience
Qual User Exp (2017) 2:9 https://doi.org/10.1007/s43-017-0012-7 REVIEW ARTICLE Review of recent standardization activities in speech quality of experience Sebastian Möller 1 Friedemann Köster 1 Received:
Artificial Bandwidth Extension Using Deep Neural Networks for Spectral Envelope Estimation
Platzhalter für Bild, Bild auf Titelfolie hinter das Logo einsetzen Artificial Bandwidth Extension Using Deep Neural Networks for Spectral Envelope Estimation Johannes Abel and Tim Fingscheidt Institute
Effects of Reverberation on Pitch, Onset/Offset, and Binaural Cues
Effects of Reverberation on Pitch, Onset/Offset, and Binaural Cues DeLiang Wang Perception & Neurodynamics Lab The Ohio State University Outline of presentation Introduction Human performance Reverberation
ing. Vasile Petrică, Drd. ing. Sorin Soviany*
Measurements of mobile phones speech transmission parameters in ambient noise conditions (Măsurarea parametrilor electroacustici ai telefoanelor mobile în condiţii de zgomot ambiant) ing. Vasile Petrică,
Key Issues and Their Implications for Automotive Industry. HEAD acoustics GmbH
Key Issues and Their Implications for Automotive Industry HEAD acoustics GmbH Tendencies - Narrowband Narrowband Roundtrip Delay Narrowband Overall Performance 33 devices 18 devices All devices support
GSM GSM TECHNICAL September 1996 SPECIFICATION Version 5.0.0
GSM GSM 03.50 TECHNICAL September 1996 SPECIFICATION Version 5.0.0 Source: ETSI TC-SMG Reference: TS/SMG-020350Q ICS: 33.060.50 Key words: Digital cellular telecommunications system, Global System for
SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Methods for objective and subjective assessment of quality
International Telecommunication Union ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU P.862.3 (11/2007) SERIES P: TELEPHONE TRANSMISSION QUALITY, TELEPHONE INSTALLATIONS, LOCAL LINE NETWORKS Methods
INTERNATIONAL STANDARD
INTERNATIONAL STANDARD IEC 60268-16 Third edition 2003-05 Sound system equipment Part 16: Objective rating of speech intelligibility by speech transmission index Equipements pour systèmes électroacoustiques