AU2001264294A1 - Frequency thinning device and method for compressing information by thinning outfrequency components of signal - Google Patents

Frequency thinning device and method for compressing information by thinning outfrequency components of signal

Info

Publication number
AU2001264294A1
AU2001264294A1 AU2001264294A AU6429401A AU2001264294A1 AU 2001264294 A1 AU2001264294 A1 AU 2001264294A1 AU 2001264294 A AU2001264294 A AU 2001264294A AU 6429401 A AU6429401 A AU 6429401A AU 2001264294 A1 AU2001264294 A1 AU 2001264294A1
Authority
AU
Australia
Prior art keywords
thinning
outfrequency
components
signal
frequency
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
AU2001264294A
Inventor
Yasushi Sato
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.)
Kenwood KK
Original Assignee
Kenwood KK
Kenwood Geobit 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 Kenwood KK, Kenwood Geobit Corp filed Critical Kenwood KK
Publication of AU2001264294A1 publication Critical patent/AU2001264294A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H04B14/046—Systems or methods for reducing noise or bandwidth
    • H04B14/048—Non linear compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Nonlinear Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
AU2001264294A 2000-07-21 2001-06-15 Frequency thinning device and method for compressing information by thinning outfrequency components of signal Abandoned AU2001264294A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000/220742 2000-07-21
JP2000220742A JP3576935B2 (en) 2000-07-21 2000-07-21 Frequency thinning device, frequency thinning method and recording medium
PCT/JP2001/005124 WO2002009091A1 (en) 2000-07-21 2001-06-15 Frequency thinning device and method for compressing information by thinning out frequency components of signal

Publications (1)

Publication Number Publication Date
AU2001264294A1 true AU2001264294A1 (en) 2002-02-05

Family

ID=18715291

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001264294A Abandoned AU2001264294A1 (en) 2000-07-21 2001-06-15 Frequency thinning device and method for compressing information by thinning outfrequency components of signal

Country Status (4)

Country Link
US (1) US7184961B2 (en)
JP (1) JP3576935B2 (en)
AU (1) AU2001264294A1 (en)
WO (1) WO2002009091A1 (en)

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* Cited by examiner, † Cited by third party
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DE10230809B4 (en) * 2002-07-08 2008-09-11 T-Mobile Deutschland Gmbh Method for transmitting audio signals according to the method of prioritizing pixel transmission
JP4769673B2 (en) * 2006-09-20 2011-09-07 富士通株式会社 Audio signal interpolation method and audio signal interpolation apparatus
US8326641B2 (en) * 2008-03-20 2012-12-04 Samsung Electronics Co., Ltd. Apparatus and method for encoding and decoding using bandwidth extension in portable terminal
US8942989B2 (en) * 2009-12-28 2015-01-27 Panasonic Intellectual Property Corporation Of America Speech coding of principal-component channels for deleting redundant inter-channel parameters
WO2011121782A1 (en) * 2010-03-31 2011-10-06 富士通株式会社 Bandwidth extension device and bandwidth extension method
US9557358B2 (en) * 2011-04-20 2017-01-31 Tektronix, Inc. Minimal reconfiguration spectrum stitching with overlapped bands
JP5986565B2 (en) * 2011-06-09 2016-09-06 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ Speech coding apparatus, speech decoding apparatus, speech coding method, and speech decoding method
JP2013007944A (en) 2011-06-27 2013-01-10 Sony Corp Signal processing apparatus, signal processing method, and program
WO2021115912A1 (en) 2019-12-09 2021-06-17 Basf Se Formulations comprising a hydrophobically modified polyethyleneimine and one or more enzymes

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6442938A (en) * 1987-08-10 1989-02-15 Nec Corp Broad band high efficiency coding system using coder side channel band and its coding system
JPS6442938U (en) 1987-09-09 1989-03-15
US5127054A (en) * 1988-04-29 1992-06-30 Motorola, Inc. Speech quality improvement for voice coders and synthesizers
EP0388043B1 (en) * 1989-02-28 1995-12-06 Canon Kabushiki Kaisha System for processing a quantized vector
JP2916160B2 (en) 1989-03-09 1999-07-05 富士通株式会社 Time-switching band-division speech coding method and apparatus
JP3297751B2 (en) * 1992-03-18 2002-07-02 ソニー株式会社 Data number conversion method, encoding device and decoding device
JPH06289898A (en) 1993-03-30 1994-10-18 Sony Corp Speech signal processor
US5623577A (en) * 1993-07-16 1997-04-22 Dolby Laboratories Licensing Corporation Computationally efficient adaptive bit allocation for encoding method and apparatus with allowance for decoder spectral distortions
JPH07273656A (en) 1994-03-29 1995-10-20 Sony Corp Method and device for processing signal
DE69616139T2 (en) * 1995-04-25 2002-03-14 Matsushita Electric Industrial Co., Ltd. System for adjusting the sound quality
JPH10294668A (en) 1997-04-22 1998-11-04 Matsushita Electric Ind Co Ltd Method, device for decoding audio encoded data and record medium
SE512719C2 (en) * 1997-06-10 2000-05-02 Lars Gustaf Liljeryd A method and apparatus for reducing data flow based on harmonic bandwidth expansion
JP2000036755A (en) 1998-05-15 2000-02-02 Sony Corp Method and device for code convesion and program supply medium thereof
JP2001083995A (en) 1999-09-13 2001-03-30 Matsushita Electric Ind Co Ltd Sub band encoding/decoding method

Also Published As

Publication number Publication date
JP3576935B2 (en) 2004-10-13
US20030167164A1 (en) 2003-09-04
US7184961B2 (en) 2007-02-27
JP2002041098A (en) 2002-02-08
WO2002009091A1 (en) 2002-01-31

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