SG87734A1 - Process for assessing the transmission quality of a speech transmission line - Google Patents

Process for assessing the transmission quality of a speech transmission line

Info

Publication number
SG87734A1
SG87734A1 SG9603090A SG1996003090A SG87734A1 SG 87734 A1 SG87734 A1 SG 87734A1 SG 9603090 A SG9603090 A SG 9603090A SG 1996003090 A SG1996003090 A SG 1996003090A SG 87734 A1 SG87734 A1 SG 87734A1
Authority
SG
Singapore
Prior art keywords
measuring unit
speech
sequence
mobile
network
Prior art date
Application number
SG9603090A
Inventor
Pietro Gianni Di
Ziemowit Zglinski
Original Assignee
Ascom Infrasys Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ascom Infrasys Ag filed Critical Ascom Infrasys Ag
Publication of SG87734A1 publication Critical patent/SG87734A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/69—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for evaluating synthetic or decoded voice signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2236—Quality of speech transmission monitoring
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique
    • G10L25/30—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique using neural networks

Abstract

The figure shows a speech transmission link. This leads from a telephone (11) of a private network (13) via exchanges (14, 17) to a mobile node (19) with an antenna (20) and via a radio link (22) to a mobile telephone (12). A mobile (31) and a stationary measuring unit (32) which are disposed near to the telephones (11, 12) are used to evaluate the given transmission quality. The one measuring unit (31, 32) transmits a pre-defined sequence of human speech, prefixed by a synchronisation pattern, as a test signal. The respective other measuring unit (32, 31) recognises the synchronisation pattern and thereby defines the starting time of the following sequence. This sequence is divided up into a multiplicity of respective intermediate values in that time intervals are formed and their sound characteristics are digitised. All of the intermediate values are finally evaluated by a neural network in such a way that an evaluation of "quality good, average or poor" understandable to humans is achieved at the output of said network. It is important here that the neural network is first trained using data evaluated by test persons. <IMAGE>
SG9603090A 1993-09-22 1994-09-19 Process for assessing the transmission quality of a speech transmission line SG87734A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH285393A CH686752A8 (en) 1993-09-22 1993-09-22 Method for assessing the transmission quality of a voice transmission link

Publications (1)

Publication Number Publication Date
SG87734A1 true SG87734A1 (en) 2002-04-16

Family

ID=4243054

Family Applications (1)

Application Number Title Priority Date Filing Date
SG9603090A SG87734A1 (en) 1993-09-22 1994-09-19 Process for assessing the transmission quality of a speech transmission line

Country Status (8)

Country Link
EP (1) EP0644674B1 (en)
AT (1) ATE230531T1 (en)
CH (1) CH686752A8 (en)
DE (1) DE59410223D1 (en)
ES (1) ES2188601T3 (en)
FI (1) FI112751B (en)
NO (1) NO312870B1 (en)
SG (1) SG87734A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59410225D1 (en) * 1994-11-25 2003-02-06 T Mobile Deutschland Gmbh Method for determining a quantity that characterizes the quality of a digital voice transmission
GB9512303D0 (en) * 1995-06-16 1995-08-16 Assessment Services Ltd Improvements in or relating to data analysers
GB2302487B (en) * 1995-06-16 1999-11-10 Assessment Services Limited Improvements in or relating to data analysers
FI961073A0 (en) * 1996-03-07 1996-03-07 Nokia Telecommunications Oy Subscribers Foer ett radiosystem
SE517413C2 (en) * 1996-07-25 2002-06-04 Telia Ab Improvements in, or relating to, the measurement of the quality of telecommunications connections
EP0916206B1 (en) * 1996-08-02 2004-10-13 Ascom AG Process and device for evaluating the quality of a transmitted voice signal
US6201960B1 (en) 1997-06-24 2001-03-13 Telefonaktiebolaget Lm Ericsson (Publ) Speech quality measurement based on radio link parameters and objective measurement of received speech signals
EP0946015B1 (en) 1998-03-27 2007-10-17 Ascom (Schweiz) AG Method and system for estimating transmission quality
EP1119957B1 (en) * 1998-10-08 2005-04-13 BRITISH TELECOMMUNICATIONS public limited company Measurement of speech signal quality
US6499009B1 (en) 1999-10-29 2002-12-24 Telefonaktiebolaget Lm Ericsson Handling variable delay in objective speech quality assessment
EP1104924A1 (en) * 1999-12-02 2001-06-06 Koninklijke KPN N.V. Determination of the time relation between speech signals affected by time warping
DE10327239A1 (en) * 2003-06-17 2005-01-27 Opticom Dipl.-Ing. Michael Keyhl Gmbh Apparatus and method for extracting a test signal portion from an audio signal
GB0513294D0 (en) * 2005-06-29 2005-08-03 Nokia Corp Quality assessment for telecommunications network
CN102110436B (en) * 2009-12-28 2012-05-09 中兴通讯股份有限公司 Method and device for identifying mark voice based on voice enveloping characteristic
DE102012000931A1 (en) 2012-01-19 2013-07-25 Volkswagen Ag Method for diagnosing audio system of motor vehicle, involves emitting test signal acoustically by loud speaker of audio system of motor vehicle, where test signal is received by microphone for generating microphone signal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3708002A1 (en) * 1987-03-12 1988-09-22 Telefonbau & Normalzeit Gmbh Measuring method for assessing the quality of speech coders and/or transmission routes
JPH01255346A (en) * 1988-04-05 1989-10-12 Fujitsu Ltd System for testing communication control equipment
US5040215A (en) * 1988-09-07 1991-08-13 Hitachi, Ltd. Speech recognition apparatus using neural network and fuzzy logic

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH549909A (en) * 1972-12-06 1974-05-31 Siemens Ag Albis METHOD FOR MEASURING AND / OR MONITORING THE TRANSMISSION QUALITY OF A MESSAGE TRANSMISSION SYSTEM.
US4633411A (en) * 1982-12-27 1986-12-30 Rockwell International Corporation Link quality analyzer
DE3513361A1 (en) * 1985-04-15 1986-10-16 Philips Patentverwaltung Gmbh, 2000 Hamburg METHOD AND CIRCUIT FOR THE QUALITY MEASUREMENT OF RADIO TRANSMISSION CHANNELS OF A RADIO TRANSMISSION SYSTEM
US5220640A (en) * 1990-09-20 1993-06-15 Motorola, Inc. Neural net architecture for rate-varying inputs
CA2277975C (en) * 1992-06-24 2001-11-20 British Telecommunications Public Limited Company Method and apparatus for objective speech quality measurements of telecommunication equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3708002A1 (en) * 1987-03-12 1988-09-22 Telefonbau & Normalzeit Gmbh Measuring method for assessing the quality of speech coders and/or transmission routes
JPH01255346A (en) * 1988-04-05 1989-10-12 Fujitsu Ltd System for testing communication control equipment
US5040215A (en) * 1988-09-07 1991-08-13 Hitachi, Ltd. Speech recognition apparatus using neural network and fuzzy logic

Also Published As

Publication number Publication date
DE59410223D1 (en) 2003-02-06
EP0644674B1 (en) 2003-01-02
EP0644674A2 (en) 1995-03-22
EP0644674A3 (en) 1996-11-20
CH686752A5 (en) 1996-06-14
ES2188601T3 (en) 2003-07-01
FI944391A (en) 1995-03-23
NO943500L (en) 1995-03-23
FI112751B (en) 2003-12-31
ATE230531T1 (en) 2003-01-15
NO312870B1 (en) 2002-07-08
NO943500D0 (en) 1994-09-20
FI944391A0 (en) 1994-09-22
CH686752A8 (en) 1996-08-15

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