SG10201710913TA - Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation - Google Patents

Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation

Info

Publication number
SG10201710913TA
SG10201710913TA SG10201710913TA SG10201710913TA SG10201710913TA SG 10201710913T A SG10201710913T A SG 10201710913TA SG 10201710913T A SG10201710913T A SG 10201710913TA SG 10201710913T A SG10201710913T A SG 10201710913TA SG 10201710913T A SG10201710913T A SG 10201710913TA
Authority
SG
Singapore
Prior art keywords
baseband
spectral components
signal
spectrum
frequency
Prior art date
Application number
SG10201710913TA
Inventor
Michael Mead Truman
Mark Stuart Vinton
Original Assignee
Dolby Laboratories Licensing Corp
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 Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of SG10201710913TA publication Critical patent/SG10201710913TA/en

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    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
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    • 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
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    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • G—PHYSICS
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    • G10L19/012—Comfort noise or silence coding
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    • 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
    • G—PHYSICS
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    • 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
    • G—PHYSICS
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    • 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
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    • 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
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    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
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    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
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    • 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
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    • G10L19/16—Vocoder architecture
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
    • G—PHYSICS
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    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
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    • 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
    • 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
    • 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
    • G10L21/0388—Details of processing therefor
    • 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
    • G10L19/0212—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 orthogonal transformation

Abstract

A method for generating a reconstructed signal comprises: receiving a signal containing data representing a baseband signal derived from an audio signal and an estimated spectral envelope; obtaining from the data a frequency-domain representation of the baseband signal, the frequency-domain representation comprising baseband spectral components; obtaining a regenerated signal comprising regenerated spectral components by copying into individual subbands the lowest-frequency baseband spectral components to a lower edge of a respective subband and continuing through the baseband spectral components in a circular manner to complete a translation for that respective subband; and obtaining a time-domain representation of the reconstructed signal corresponding to a combination of the baseband spectral components, the regenerated spectral components and the estimated spectral envelope.
SG10201710913TA 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation SG10201710913TA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/113,858 US20030187663A1 (en) 2002-03-28 2002-03-28 Broadband frequency translation for high frequency regeneration

Publications (1)

Publication Number Publication Date
SG10201710913TA true SG10201710913TA (en) 2018-02-27

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ID=28453693

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SG10201710912WA SG10201710912WA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG2013057666A SG2013057666A (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG200606723-5A SG153658A1 (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG10201710913TA SG10201710913TA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG10201710915PA SG10201710915PA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG10201710911VA SG10201710911VA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG10201710917UA SG10201710917UA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG2009012824A SG173224A1 (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation

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SG10201710912WA SG10201710912WA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG2013057666A SG2013057666A (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG200606723-5A SG153658A1 (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation

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SG10201710915PA SG10201710915PA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG10201710911VA SG10201710911VA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG10201710917UA SG10201710917UA (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation
SG2009012824A SG173224A1 (en) 2002-03-28 2003-03-21 Reconstruction of the spectrum of an audiosignal with incomplete spectrum based on frequency translation

Country Status (16)

Country Link
US (19) US20030187663A1 (en)
EP (2) EP2194528B1 (en)
JP (1) JP4345890B2 (en)
KR (1) KR101005731B1 (en)
CN (2) CN100338649C (en)
AT (1) ATE511180T1 (en)
AU (1) AU2003239126B2 (en)
CA (1) CA2475460C (en)
HK (2) HK1078673A1 (en)
MX (1) MXPA04009408A (en)
MY (1) MY140567A (en)
PL (1) PL208846B1 (en)
SG (8) SG10201710912WA (en)
SI (1) SI2194528T1 (en)
TW (1) TWI319180B (en)
WO (1) WO2003083834A1 (en)

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