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WO2007034375A3 - Determination of a distortion measure for audio encoding - Google Patents

Determination of a distortion measure for audio encoding Download PDF

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Publication number
WO2007034375A3
WO2007034375A3 PCT/IB2006/053261 IB2006053261W WO2007034375A3 WO 2007034375 A3 WO2007034375 A3 WO 2007034375A3 IB 2006053261 W IB2006053261 W IB 2006053261W WO 2007034375 A3 WO2007034375 A3 WO 2007034375A3
Authority
WO
WIPO (PCT)
Prior art keywords
frequency domain
distortion
sensitivity characteristic
audio signal
frequency
Prior art date
Application number
PCT/IB2006/053261
Other languages
French (fr)
Other versions
WO2007034375A2 (en
Inventor
De Par Steven L J D E Van
Original Assignee
Koninkl Philips Electronics Nv
De Par Steven L J D E Van
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 Koninkl Philips Electronics Nv, De Par Steven L J D E Van filed Critical Koninkl Philips Electronics Nv
Publication of WO2007034375A2 publication Critical patent/WO2007034375A2/en
Publication of WO2007034375A3 publication Critical patent/WO2007034375A3/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

A distortion processor (207) is arranged to determine a distortion measure for an audio encoding of an audio signal. The distortion processor (207) comprises a temporal distortion processor (211) which generates a frequency domain sensitivity characteristic for the audio signal in response to a predetermined error estimate and a time domain analysis of the audio signal using a time domain model having a time scale smaller than a duration of an analysis segment of the audio encoding. The frequency domain sensitivity characteristic is fed to a frequency distortion processor (213) and may be in the form of a frequency domain masking curve. The frequency distortion processor (213) determines the distortion measure in response to a frequency domain representation of the audio signal, a frequency domain error signal and the frequency domain sensitivity characteristic. The frequency domain sensitivity characteristic is independent of the applied quantization and different quantization options can be evaluated using only frequency domain processing.
PCT/IB2006/053261 2005-09-23 2006-09-13 Determination of a distortion measure for audio encoding WO2007034375A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05108811.0 2005-09-23
EP05108811 2005-09-23

Publications (2)

Publication Number Publication Date
WO2007034375A2 WO2007034375A2 (en) 2007-03-29
WO2007034375A3 true WO2007034375A3 (en) 2008-12-04

Family

ID=37889199

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/053261 WO2007034375A2 (en) 2005-09-23 2006-09-13 Determination of a distortion measure for audio encoding

Country Status (1)

Country Link
WO (1) WO2007034375A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10588776B2 (en) 2015-01-13 2020-03-17 Align Technology, Inc. Systems, methods, and devices for applying distributed forces for mandibular advancement
US10517701B2 (en) 2015-01-13 2019-12-31 Align Technology, Inc. Mandibular advancement and retraction via bone anchoring devices
US10537463B2 (en) 2015-01-13 2020-01-21 Align Technology, Inc. Systems and methods for positioning a patient's mandible in response to sleep apnea status
EP3576088A1 (en) * 2018-05-30 2019-12-04 Fraunhofer Gesellschaft zur Förderung der Angewand Audio similarity evaluator, audio encoder, methods and computer program

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004107318A1 (en) * 2003-05-27 2004-12-09 Koninklijke Philips Electronics N.V. Audio coding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004107318A1 (en) * 2003-05-27 2004-12-09 Koninklijke Philips Electronics N.V. Audio coding

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PLASBERG, ZHAO,KLEIJN: "The sensitivity matrix for a spectro-temporal auditory model", PROCEEDINGS OF THE 12TH EUROPEAN SIGNAL PROCESSING CONFERENCE, EUSIPCO2004, 6 September 2004 (2004-09-06) - 10 September 2004 (2004-09-10), Vienna, Austria, pages 1673 - 1676, XP002498573 *
VAN SCHIJNDEL PHILIPS RESEARCH EINDHOVEN N H: "ARDOR Final Report", 20050701, 31 July 2005 (2005-07-31), pages complete, XP007905844, Retrieved from the Internet <URL:www.extra.research.philips.com/publ/rep/nl-ur/PR-TN2005-00622.pdf> [retrieved on 20081002] *

Also Published As

Publication number Publication date
WO2007034375A2 (en) 2007-03-29

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