NZ500272A - Speech detection in a telecommunication system - Google Patents

Speech detection in a telecommunication system

Info

Publication number
NZ500272A
NZ500272A NZ500272A NZ50027298A NZ500272A NZ 500272 A NZ500272 A NZ 500272A NZ 500272 A NZ500272 A NZ 500272A NZ 50027298 A NZ50027298 A NZ 50027298A NZ 500272 A NZ500272 A NZ 500272A
Authority
NZ
New Zealand
Prior art keywords
speech
signal
noise
values
distinguish
Prior art date
Application number
NZ500272A
Inventor
Samu Kaajas
Original Assignee
Nokia Networks Oy
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 Nokia Networks Oy filed Critical Nokia Networks Oy
Publication of NZ500272A publication Critical patent/NZ500272A/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L25/78—Detection of presence or absence of voice signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/06—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being correlation coefficients
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/12—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being prediction coefficients
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Complex Calculations (AREA)

Abstract

A speech identification system for a telephone network uses neural networks to distinguish between speech and noise signals by utilizing speech and noise samples. For an input signal the respective values of linear predictor coefficients, a peak value lag of an autocorrelation function of the signal, an autocorrelation function peak value of the signal divided by the signal energy, and the number of times the 0-level is exceeded during an observation period, are determined and these values are used as input vectors to the neural network. The neural network, which has previously been trained to distinguish between speech and noise signals, calculates output values for speech and noise neurons on the basis of the inputs, and decides whether the signal is speech or noise.
NZ500272A 1997-04-18 1998-04-17 Speech detection in a telecommunication system NZ500272A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI971679A FI971679A (en) 1997-04-18 1997-04-18 Detection of speech in a telecommunication system
PCT/FI1998/000345 WO1998048407A2 (en) 1997-04-18 1998-04-17 Speech detection in a telecommunication system

Publications (1)

Publication Number Publication Date
NZ500272A true NZ500272A (en) 2001-03-30

Family

ID=8548676

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ500272A NZ500272A (en) 1997-04-18 1998-04-17 Speech detection in a telecommunication system

Country Status (6)

Country Link
EP (1) EP0976124A2 (en)
AU (1) AU736133B2 (en)
CA (1) CA2286770A1 (en)
FI (1) FI971679A (en)
NZ (1) NZ500272A (en)
WO (1) WO1998048407A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10381020B2 (en) 2017-06-16 2019-08-13 Apple Inc. Speech model-based neural network-assisted signal enhancement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276765A (en) * 1988-03-11 1994-01-04 British Telecommunications Public Limited Company Voice activity detection
JP2776848B2 (en) * 1988-12-14 1998-07-16 株式会社日立製作所 Denoising method, neural network learning method used for it
JPH03111898A (en) * 1989-09-26 1991-05-13 Sekisui Chem Co Ltd Voice detection system
JP2643593B2 (en) * 1989-11-28 1997-08-20 日本電気株式会社 Voice / modem signal identification circuit
IT1270438B (en) * 1993-06-10 1997-05-05 Sip PROCEDURE AND DEVICE FOR THE DETERMINATION OF THE FUNDAMENTAL TONE PERIOD AND THE CLASSIFICATION OF THE VOICE SIGNAL IN NUMERICAL CODERS OF THE VOICE
GB2278984A (en) * 1993-06-11 1994-12-14 Redifon Technology Limited Speech presence detector

Also Published As

Publication number Publication date
WO1998048407A3 (en) 1999-02-11
WO1998048407A2 (en) 1998-10-29
EP0976124A2 (en) 2000-02-02
FI971679A0 (en) 1997-04-18
CA2286770A1 (en) 1998-10-29
AU736133B2 (en) 2001-07-26
FI971679A (en) 1998-10-19
AU7045398A (en) 1998-11-13

Similar Documents

Publication Publication Date Title
CA2165229A1 (en) Method and Apparatus for Characterizing an Input Signal
TW340938B (en) Dialog device with voice identification capabilty
DE69300413D1 (en) Method of identifying voice and call history signals.
AU2001247265A1 (en) Communication system noise cancellation power signal calculation techniques
AU2003268002A8 (en) Frequency domain equalization of communication signals
GB2239971A (en) System for separating speech from background noise
WO1997011435A3 (en) Transaction support apparatus
HU0101288D0 (en) Method of time-domain noise suppression in telecommunication systems
CA2385233A1 (en) Emphasis of short-duration transient speech features
CA2098629A1 (en) Speech recognition method using time-frequency masking mechanism
AU1149601A (en) Speech recognition
DE69605290D1 (en) CYCLIC KETONE PEROXIDES AS POLYMER INITIATORS
MXPA00001875A (en) Voice recognition system and method.
EP0750292A3 (en) Speech recognition method and speech recognition system with reduced recognition time in consideration of environmental variation
WO1999001942A3 (en) A method of noise reduction in speech signals and an apparatus for performing the method
ES2133995T3 (en) NUMERICAL TREATMENT DEVICE FOR AN ANALOGUE SIGNAL THAT MUST BE ANALOGALLY RESTITUTED.
KR970031415A (en) Digital Amplifier Detector Using Digital Signal Processing Chip and Its Implementation Method
NZ500272A (en) Speech detection in a telecommunication system
AU7413000A (en) Method for training a neural network
FR2648661B1 (en) LOW FREQUENCY ALTERNATIVE SIGNAL DETECTOR IN PARTICULAR FOR TELEPHONE TRUNK
CA2190686A1 (en) Method of determining parameters of a pitch synthesis filter in a speech coder, and speech coder implementing such method
CA2172199A1 (en) Method of Speeding Up the Execution of Neural Networks for Correlated Signal Processing
CA2326873A1 (en) Apparatus for receiving tone signal, apparatus for transmitting tone signal, and apparatus for transmitting or receiving tone signal
EP0851406A3 (en) Spectrum feature parameter extracting system based on frequency weight estimation function
WO1998005031A3 (en) A method and a device for the reduction impulse noise from a speech signal

Legal Events

Date Code Title Description
PSEA Patent sealed
RENW Renewal (renewal fees accepted)