SE0203468D0 - Förbättrad spektral översättning/vikning i subbandområdet - Google Patents

Förbättrad spektral översättning/vikning i subbandområdet

Info

Publication number
SE0203468D0
SE0203468D0 SE0203468A SE0203468A SE0203468D0 SE 0203468 D0 SE0203468 D0 SE 0203468D0 SE 0203468 A SE0203468 A SE 0203468A SE 0203468 A SE0203468 A SE 0203468A SE 0203468 D0 SE0203468 D0 SE 0203468D0
Authority
SE
Sweden
Prior art keywords
subband signals
filter bank
patched
adjusted
digital filter
Prior art date
Application number
SE0203468A
Other languages
English (en)
Other versions
SE523883C2 (sv
SE0203468L (sv
Inventor
Lars Gustaf Liljeryd
Per Ekstrand
Fredrik Henn
Kristofer Kjoerling
Original Assignee
Coding Technologies Sweden Ab
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20279807&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE0203468(D0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Coding Technologies Sweden Ab filed Critical Coding Technologies Sweden Ab
Priority to SE0203468A priority Critical patent/SE523883C2/sv
Publication of SE0203468D0 publication Critical patent/SE0203468D0/sv
Publication of SE0203468L publication Critical patent/SE0203468L/sv
Publication of SE523883C2 publication Critical patent/SE523883C2/sv
Priority to US13/969,708 priority patent/US9245534B2/en
Priority to US14/964,836 priority patent/US9548059B2/en

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
    • G10L19/0204—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 using subband decomposition
    • G10L19/0208—Subband vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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
    • 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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • G10L19/04—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
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • G10L19/04—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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • G10L21/0205—
    • 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
    • G10L19/0204—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 using subband decomposition
SE0203468A 2000-05-23 2002-11-22 Förbättrad spektral översättning/vikning i subbandområdet SE523883C2 (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0203468A SE523883C2 (sv) 2000-05-23 2002-11-22 Förbättrad spektral översättning/vikning i subbandområdet
US13/969,708 US9245534B2 (en) 2000-05-23 2013-08-19 Spectral translation/folding in the subband domain
US14/964,836 US9548059B2 (en) 2000-05-23 2015-12-10 Spectral translation/folding in the subband domain

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0001926A SE0001926D0 (sv) 2000-05-23 2000-05-23 Improved spectral translation/folding in the subband domain
PCT/SE2001/001171 WO2001091111A1 (en) 2000-05-23 2001-05-23 Improved spectral translation/folding in the subband domain
SE0203468A SE523883C2 (sv) 2000-05-23 2002-11-22 Förbättrad spektral översättning/vikning i subbandområdet

Publications (3)

Publication Number Publication Date
SE0203468D0 true SE0203468D0 (sv) 2002-11-22
SE0203468L SE0203468L (sv) 2002-11-22
SE523883C2 SE523883C2 (sv) 2004-05-25

Family

ID=20279807

Family Applications (2)

Application Number Title Priority Date Filing Date
SE0001926A SE0001926D0 (sv) 2000-05-23 2000-05-23 Improved spectral translation/folding in the subband domain
SE0203468A SE523883C2 (sv) 2000-05-23 2002-11-22 Förbättrad spektral översättning/vikning i subbandområdet

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE0001926A SE0001926D0 (sv) 2000-05-23 2000-05-23 Improved spectral translation/folding in the subband domain

Country Status (12)

Country Link
US (17) US7483758B2 (sv)
EP (1) EP1285436B1 (sv)
JP (2) JP4289815B2 (sv)
CN (1) CN1210689C (sv)
AT (1) ATE250272T1 (sv)
AU (1) AU2001262836A1 (sv)
BR (1) BRPI0111362B1 (sv)
DE (1) DE60100813T2 (sv)
HK (1) HK1067954A1 (sv)
RU (1) RU2251795C2 (sv)
SE (2) SE0001926D0 (sv)
WO (1) WO2001091111A1 (sv)

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