GB2499505B - Speech coding - Google Patents

Speech coding

Info

Publication number
GB2499505B
GB2499505B GB1300715.8A GB201300715A GB2499505B GB 2499505 B GB2499505 B GB 2499505B GB 201300715 A GB201300715 A GB 201300715A GB 2499505 B GB2499505 B GB 2499505B
Authority
GB
United Kingdom
Prior art keywords
portions
intervals
decoded
signal
determining
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
GB1300715.8A
Other versions
GB201300715D0 (en
GB2499505A (en
Inventor
Koen Vos
Soren Skak Jensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Skype Ltd Ireland
Original Assignee
Skype Ltd Ireland
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 Skype Ltd Ireland filed Critical Skype Ltd Ireland
Priority to GB1300715.8A priority Critical patent/GB2499505B/en
Publication of GB201300715D0 publication Critical patent/GB201300715D0/en
Publication of GB2499505A publication Critical patent/GB2499505A/en
Application granted granted Critical
Publication of GB2499505B publication Critical patent/GB2499505B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A received speech signal encoded according to a source filter model is decoded by determining a spectral envelope signal, and deriving a remaining signal representative of the modelled filter comprising successive periodic portions by, at intervals, determining correlation between the periodic portions and predicting later portions based on stored versions of earlier portions. The remaining signal is then reconstructed and a decoded speech signal generated. The stored version of the earlier portions is also, at intervals, transformed prior to generating the predictions.
GB1300715.8A 2013-01-15 2013-01-15 Speech coding Active GB2499505B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1300715.8A GB2499505B (en) 2013-01-15 2013-01-15 Speech coding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1300715.8A GB2499505B (en) 2013-01-15 2013-01-15 Speech coding

Publications (3)

Publication Number Publication Date
GB201300715D0 GB201300715D0 (en) 2013-02-27
GB2499505A GB2499505A (en) 2013-08-21
GB2499505B true GB2499505B (en) 2014-01-08

Family

ID=47758022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1300715.8A Active GB2499505B (en) 2013-01-15 2013-01-15 Speech coding

Country Status (1)

Country Link
GB (1) GB2499505B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102664768B1 (en) 2019-01-13 2024-05-17 후아웨이 테크놀러지 컴퍼니 리미티드 High-resolution audio coding

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6574593B1 (en) * 1999-09-22 2003-06-03 Conexant Systems, Inc. Codebook tables for encoding and decoding
US20080154588A1 (en) * 2006-12-26 2008-06-26 Yang Gao Speech Coding System to Improve Packet Loss Concealment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6574593B1 (en) * 1999-09-22 2003-06-03 Conexant Systems, Inc. Codebook tables for encoding and decoding
US20080154588A1 (en) * 2006-12-26 2008-06-26 Yang Gao Speech Coding System to Improve Packet Loss Concealment

Also Published As

Publication number Publication date
GB201300715D0 (en) 2013-02-27
GB2499505A (en) 2013-08-21

Similar Documents

Publication Publication Date Title
PH12017500774A1 (en) Parameter update method for entropy coding and decoding of conversion coefficient level, and entropy coding device and entropy decoding device of conversion coefficient level using same
MX354337B (en) Hybrid backward-compatible signal encoding and decoding.
MX2012010469A (en) Audio signal decoder, audio signal encoder, methods and computer program using a sampling rate dependent time-warp contour encoding.
MY192253A (en) Encoder, decoder and method for encoding and decoding audio content using parameters for enhancing a concealment
MX2016012950A (en) Methods, encoder and decoder for linear predictive encoding and decoding of sound signals upon transition between frames having different sampling rates.
MX351363B (en) Apparatus and method for generating an adaptive spectral shape of comfort noise.
EP3185557A4 (en) Predictive coding/decoding method, corresponding coder/decoder, and electronic device
MX2016011590A (en) Using a current picture as a reference for video coding.
MX340575B (en) Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping.
MX2016004806A (en) Coding of spectral coefficients of a spectrum of an audio signal.
BR112016001141A2 (en) AUDIO CODER, AUDIO DECODER, METHODS AND COMPUTER PROGRAM USING TOGETHER CODED RESIDUAL SIGNALS
MY179139A (en) Noise filling in multichannel audio coding
HK1218460A1 (en) Decoder for generating a frequency enhanced audio signal, method of decoding, encoder for generating an encoded signal and method of encoding using compact selection side information
PH12018501871A1 (en) Signal encoding method and device
MX2019012777A (en) Audio coding method and apparatus.
MX2019011955A (en) Coding and decoding of spectral peak positions.
MX338541B (en) Method for coding video quantization parameter and method for decoding video quantization parameter.
GB2499505B (en) Speech coding
WO2014047606A3 (en) Techniques for data synchronization using compressive sensing
EP3902141A4 (en) Conversion device, encoding device, decoding device, methods of conversion device, encoding device, and decoding device, and program
UA111310C2 (en) FORECASTING ON BASIC MODELS IN CRITICAL DISCRETION FILTERS
AR096989A1 (en) APPARATUS AND METHOD FOR CODING AND DECODING A CODIFIED AUDIO SIGNAL USING TEMPORARY / PATCHED NOISE MODEL

Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20200820 AND 20200826