DE3884839D1 - Coding acoustic waveforms. - Google Patents

Coding acoustic waveforms.

Info

Publication number
DE3884839D1
DE3884839D1 DE88302063T DE3884839T DE3884839D1 DE 3884839 D1 DE3884839 D1 DE 3884839D1 DE 88302063 T DE88302063 T DE 88302063T DE 3884839 T DE3884839 T DE 3884839T DE 3884839 D1 DE3884839 D1 DE 3884839D1
Authority
DE
Germany
Prior art keywords
phase
disclosed
pitch
voice
coding
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.)
Expired - Lifetime
Application number
DE88302063T
Other languages
German (de)
Other versions
DE3884839T2 (en
Inventor
Robert J Mcaulay
Thomas F Quatieri
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.)
Massachusetts Institute of Technology
Original Assignee
Massachusetts Institute of Technology
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 Massachusetts Institute of Technology filed Critical Massachusetts Institute of Technology
Publication of DE3884839D1 publication Critical patent/DE3884839D1/en
Application granted granted Critical
Publication of DE3884839T2 publication Critical patent/DE3884839T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders

Abstract

Encoding techniques and devices based on a sinusoidal speech representation model are disclosed. In one aspect of the invention, a pitch-adaptive channel encoding technique for amplitude coding is disclosed in which the channel spacing is varied in accordance with the pitch of the speaker's voice. In another aspect of the invention, a phase synthesis technique is disclosed which locks rapidly-varying phases into synchrony with the phase of the fundamental. Phase coding techniques which introduce a voice-dependent random phase and a pitch-adaptive quadratic phase dispersion are also disclosed.
DE88302063T 1987-04-02 1988-03-10 Coding acoustic waveforms. Expired - Lifetime DE3884839T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3409787A 1987-04-02 1987-04-02

Publications (2)

Publication Number Publication Date
DE3884839D1 true DE3884839D1 (en) 1993-11-18
DE3884839T2 DE3884839T2 (en) 1994-05-05

Family

ID=21874290

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88302063T Expired - Lifetime DE3884839T2 (en) 1987-04-02 1988-03-10 Coding acoustic waveforms.

Country Status (6)

Country Link
EP (1) EP0285276B1 (en)
JP (2) JP3191926B2 (en)
AT (1) ATE95936T1 (en)
AU (2) AU612351B2 (en)
CA (1) CA1332982C (en)
DE (1) DE3884839T2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029509A (en) * 1989-05-10 1991-07-09 Board Of Trustees Of The Leland Stanford Junior University Musical synthesizer combining deterministic and stochastic waveforms
JPH04150233A (en) * 1990-10-09 1992-05-22 Matsushita Electric Ind Co Ltd Signal transmission method
JP2606756B2 (en) * 1990-10-22 1997-05-07 財団法人鉄道総合技術研究所 Digital signal transmission equipment
DE4126882A1 (en) * 1991-08-14 1993-02-18 Philips Patentverwaltung ARRANGEMENT FOR LANGUAGE TRANSMISSION
WO1993018505A1 (en) * 1992-03-02 1993-09-16 The Walt Disney Company Voice transformation system
BE1007428A3 (en) * 1993-08-02 1995-06-13 Philips Electronics Nv Transmission of reconstruction of missing signal samples.
US5517595A (en) * 1994-02-08 1996-05-14 At&T Corp. Decomposition in noise and periodic signal waveforms in waveform interpolation
JP2778567B2 (en) * 1995-12-23 1998-07-23 日本電気株式会社 Signal encoding apparatus and method
US6112169A (en) * 1996-11-07 2000-08-29 Creative Technology, Ltd. System for fourier transform-based modification of audio
US6449592B1 (en) 1999-02-26 2002-09-10 Qualcomm Incorporated Method and apparatus for tracking the phase of a quasi-periodic signal
WO2002003381A1 (en) * 2000-02-29 2002-01-10 Qualcomm Incorporated Method and apparatus for tracking the phase of a quasi-periodic signal
DE60113034T2 (en) * 2000-06-20 2006-06-14 Koninkl Philips Electronics Nv SINUSOIDAL ENCODING
AU2003274617A1 (en) * 2002-11-29 2004-06-23 Koninklijke Philips Electronics N.V. Audio coding
WO2005024783A1 (en) * 2003-09-05 2005-03-17 Koninklijke Philips Electronics N.V. Low bit-rate audio encoding
US8805694B2 (en) 2009-02-16 2014-08-12 Electronics And Telecommunications Research Institute Method and apparatus for encoding and decoding audio signal using adaptive sinusoidal coding
CN102264022B (en) * 2010-04-08 2014-03-12 Gn瑞声达公司 Stability improvements in hearing aids

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215915A4 (en) * 1985-03-18 1987-11-25 Massachusetts Inst Technology Processing of acoustic waveforms.
US4856068A (en) * 1985-03-18 1989-08-08 Massachusetts Institute Of Technology Audio pre-processing methods and apparatus

Also Published As

Publication number Publication date
EP0285276B1 (en) 1993-10-13
AU7436491A (en) 1991-07-11
CA1332982C (en) 1994-11-08
AU1314588A (en) 1988-10-06
AU643769B2 (en) 1993-11-25
AU612351B2 (en) 1991-07-11
ATE95936T1 (en) 1993-10-15
JP2001228898A (en) 2001-08-24
DE3884839T2 (en) 1994-05-05
EP0285276A2 (en) 1988-10-05
JP3191926B2 (en) 2001-07-23
EP0285276A3 (en) 1989-11-23
JPH01221800A (en) 1989-09-05

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Legal Events

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8364 No opposition during term of opposition