WO2008016945A3 - Systems and methods for modifying a window with a frame associated with an audio signal - Google Patents

Systems and methods for modifying a window with a frame associated with an audio signal Download PDF

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Publication number
WO2008016945A3
WO2008016945A3 PCT/US2007/074898 US2007074898W WO2008016945A3 WO 2008016945 A3 WO2008016945 A3 WO 2008016945A3 US 2007074898 W US2007074898 W US 2007074898W WO 2008016945 A3 WO2008016945 A3 WO 2008016945A3
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WO
WIPO (PCT)
Prior art keywords
window
frame
modifying
audio signal
systems
Prior art date
Application number
PCT/US2007/074898
Other languages
French (fr)
Other versions
WO2008016945A2 (en
WO2008016945A9 (en
Inventor
Venkatesh Krishnan
Ananthapadmanabhan A Kandhadai
Original Assignee
Qualcomm Inc
Venkatesh Krishnan
Ananthapadmanabhan A Kandhadai
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 Qualcomm Inc, Venkatesh Krishnan, Ananthapadmanabhan A Kandhadai filed Critical Qualcomm Inc
Priority to CA2658560A priority Critical patent/CA2658560C/en
Priority to EP07799949A priority patent/EP2047463A2/en
Priority to BRPI0715206-0A priority patent/BRPI0715206A2/en
Priority to JP2009523026A priority patent/JP4991854B2/en
Priority to CN2007800282862A priority patent/CN101496098B/en
Publication of WO2008016945A2 publication Critical patent/WO2008016945A2/en
Publication of WO2008016945A3 publication Critical patent/WO2008016945A3/en
Publication of WO2008016945A9 publication Critical patent/WO2008016945A9/en

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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
    • G10L19/0212—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
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding

Abstract

A method for modifying a window with a frame associated with an audio signal is described. A signal is received. The signal is partitioned into a plurality of frames. A determination is made if a frame within the plurality of frames is associated with a non-speech signal. A modified discrete cosine transform (MDCT) window function is applied to the frame to generate a first zero pad region and a second zero pad region if it was determined that the frame is associated with a non-speech signal. The frame is encoded. The decoder window is the same as the encoder window.
PCT/US2007/074898 2006-07-31 2007-07-31 Systems and methods for modifying a window with a frame associated with an audio signal WO2008016945A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA2658560A CA2658560C (en) 2006-07-31 2007-07-31 Systems and methods for modifying a window with a frame associated with an audio signal
EP07799949A EP2047463A2 (en) 2006-07-31 2007-07-31 Systems and methods for modifying a window with a frame associated with an audio signal
BRPI0715206-0A BRPI0715206A2 (en) 2006-07-31 2007-07-31 Systems and Methods for Modifying a Window with a Frame Associated with an Audio Signal
JP2009523026A JP4991854B2 (en) 2006-07-31 2007-07-31 System and method for modifying a window having a frame associated with an audio signal
CN2007800282862A CN101496098B (en) 2006-07-31 2007-07-31 Systems and methods for modifying a window with a frame associated with an audio signal

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US83467406P 2006-07-31 2006-07-31
US60/834,674 2006-07-31
US11/674,745 2007-02-14
US11/674,745 US7987089B2 (en) 2006-07-31 2007-02-14 Systems and methods for modifying a zero pad region of a windowed frame of an audio signal

Publications (3)

Publication Number Publication Date
WO2008016945A2 WO2008016945A2 (en) 2008-02-07
WO2008016945A3 true WO2008016945A3 (en) 2008-04-10
WO2008016945A9 WO2008016945A9 (en) 2008-05-29

Family

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Family Applications (1)

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PCT/US2007/074898 WO2008016945A2 (en) 2006-07-31 2007-07-31 Systems and methods for modifying a window with a frame associated with an audio signal

Country Status (10)

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US (1) US7987089B2 (en)
EP (1) EP2047463A2 (en)
JP (1) JP4991854B2 (en)
KR (1) KR101070207B1 (en)
CN (1) CN101496098B (en)
BR (1) BRPI0715206A2 (en)
CA (1) CA2658560C (en)
RU (1) RU2418323C2 (en)
TW (1) TWI364951B (en)
WO (1) WO2008016945A2 (en)

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Also Published As

Publication number Publication date
WO2008016945A2 (en) 2008-02-07
BRPI0715206A2 (en) 2013-06-11
US20080027719A1 (en) 2008-01-31
KR101070207B1 (en) 2011-10-06
JP4991854B2 (en) 2012-08-01
WO2008016945A9 (en) 2008-05-29
JP2009545780A (en) 2009-12-24
EP2047463A2 (en) 2009-04-15
CA2658560C (en) 2014-07-22
KR20090035717A (en) 2009-04-10
CA2658560A1 (en) 2008-02-07
US7987089B2 (en) 2011-07-26
TWI364951B (en) 2012-05-21
RU2418323C2 (en) 2011-05-10
RU2009107161A (en) 2010-09-10
TW200816718A (en) 2008-04-01
CN101496098A (en) 2009-07-29
CN101496098B (en) 2012-07-25

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