AU2001276588A1 - Adaptive-block-length audio coder - Google Patents

Adaptive-block-length audio coder

Info

Publication number
AU2001276588A1
AU2001276588A1 AU2001276588A AU7658801A AU2001276588A1 AU 2001276588 A1 AU2001276588 A1 AU 2001276588A1 AU 2001276588 A AU2001276588 A AU 2001276588A AU 7658801 A AU7658801 A AU 7658801A AU 2001276588 A1 AU2001276588 A1 AU 2001276588A1
Authority
AU
Australia
Prior art keywords
adaptive
block
audio coder
length audio
length
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.)
Abandoned
Application number
AU2001276588A
Inventor
K. P. P. Kalyan Chakravarthy
Bishwarup Mondal
Pushkar P. Patwardhan
Navaneetha K. Ruthramoorthy
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.)
Sasken Communication Technologies Ltd
Original Assignee
Sasken Communication Technologies Ltd
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 Sasken Communication Technologies Ltd filed Critical Sasken Communication Technologies Ltd
Publication of AU2001276588A1 publication Critical patent/AU2001276588A1/en
Abandoned 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
    • 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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0039—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver other detection of signalling, e.g. detection of TFCI explicit signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0262—Arrangements for detecting the data rate of an incoming signal
AU2001276588A 2001-01-11 2001-07-31 Adaptive-block-length audio coder Abandoned AU2001276588A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US26135801P 2001-01-11 2001-01-11
US60/261,358 2001-01-11
PCT/IB2001/001371 WO2002056297A1 (en) 2001-01-11 2001-07-31 Adaptive-block-length audio coder

Publications (1)

Publication Number Publication Date
AU2001276588A1 true AU2001276588A1 (en) 2002-07-24

Family

ID=22992942

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001276588A Abandoned AU2001276588A1 (en) 2001-01-11 2001-07-31 Adaptive-block-length audio coder

Country Status (3)

Country Link
US (5) US7930170B2 (en)
AU (1) AU2001276588A1 (en)
WO (2) WO2002056297A1 (en)

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Also Published As

Publication number Publication date
US20050018614A1 (en) 2005-01-27
WO2002056297A1 (en) 2002-07-18
US7599291B2 (en) 2009-10-06
US20040196913A1 (en) 2004-10-07
WO2002056556A2 (en) 2002-07-18
US8407043B2 (en) 2013-03-26
WO2002056556A3 (en) 2003-01-16
US7930170B2 (en) 2011-04-19
US20130231939A1 (en) 2013-09-05
US20130238344A1 (en) 2013-09-12
US20110166865A1 (en) 2011-07-07
WO2002056297A8 (en) 2002-08-15
US8756067B2 (en) 2014-06-17

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