ATE377240T1 - APPARATUS AND METHOD FOR ANALYZING AN INFORMATION SIGNAL - Google Patents

APPARATUS AND METHOD FOR ANALYZING AN INFORMATION SIGNAL

Info

Publication number
ATE377240T1
ATE377240T1 AT05744658T AT05744658T ATE377240T1 AT E377240 T1 ATE377240 T1 AT E377240T1 AT 05744658 T AT05744658 T AT 05744658T AT 05744658 T AT05744658 T AT 05744658T AT E377240 T1 ATE377240 T1 AT E377240T1
Authority
AT
Austria
Prior art keywords
information signal
spectra
short
spectrum
profile
Prior art date
Application number
AT05744658T
Other languages
German (de)
Inventor
Christian Dittmar
Christian Uhle
Juergen Herre
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Application granted granted Critical
Publication of ATE377240T1 publication Critical patent/ATE377240T1/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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use

Abstract

In order to analyse an information signal, a significant short-time spectrum is extracted from the information signal. The extraction device (16) is embodied in such a way as to extract the short-time spectra which come closer to a specific characteristic than other short-time spectra of the information signal. The extracted short-time spectra are then decomposed (18) into component signals, by ICA analysis, a component signal spectrum representing a profile spectrum of a sound source which generates a sound corresponding to the required characteristic. An amplitude envelope is calculated (20) for each profile spectrum from a series of short-time spectra of the information signal and from the determined profile spectra, said envelope indicating how the profile spectrum of a sound source generally varies over time. The profile spectra and associated amplitude envelopes describe the information signal that can be further evaluated, e.g. for the purposes of a transcription in the case of a music signal.
AT05744658T 2004-05-07 2005-04-29 APPARATUS AND METHOD FOR ANALYZING AN INFORMATION SIGNAL ATE377240T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004022660A DE102004022660B4 (en) 2004-05-07 2004-05-07 Apparatus and method for analyzing an information signal

Publications (1)

Publication Number Publication Date
ATE377240T1 true ATE377240T1 (en) 2007-11-15

Family

ID=34968451

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05744658T ATE377240T1 (en) 2004-05-07 2005-04-29 APPARATUS AND METHOD FOR ANALYZING AN INFORMATION SIGNAL

Country Status (5)

Country Link
EP (1) EP1743324B1 (en)
JP (1) JP2007536587A (en)
AT (1) ATE377240T1 (en)
DE (2) DE102004022660B4 (en)
WO (1) WO2005114651A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113723200B (en) * 2021-08-03 2024-01-12 同济大学 Method for extracting time spectrum structural features of non-stationary signals

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0675562A (en) * 1992-08-28 1994-03-18 Brother Ind Ltd Automatic musical note picking-up device
US6140568A (en) * 1997-11-06 2000-10-31 Innovative Music Systems, Inc. System and method for automatically detecting a set of fundamental frequencies simultaneously present in an audio signal
US6201176B1 (en) * 1998-05-07 2001-03-13 Canon Kabushiki Kaisha System and method for querying a music database
GB2363227B (en) * 1999-05-21 2002-02-20 Yamaha Corp Method and system for supplying contents via communication network
US7117149B1 (en) * 1999-08-30 2006-10-03 Harman Becker Automotive Systems-Wavemakers, Inc. Sound source classification
US6453252B1 (en) * 2000-05-15 2002-09-17 Creative Technology Ltd. Process for identifying audio content
JP2002207482A (en) * 2000-11-07 2002-07-26 Matsushita Electric Ind Co Ltd Device and method for automatic performance
JP2004029274A (en) * 2002-06-25 2004-01-29 Fuji Xerox Co Ltd Device and method for evaluating signal pattern, and signal pattern evaluation program

Also Published As

Publication number Publication date
DE502005001838D1 (en) 2007-12-13
WO2005114651A1 (en) 2005-12-01
DE102004022660A1 (en) 2005-12-15
EP1743324B1 (en) 2007-10-31
DE102004022660B4 (en) 2006-03-23
EP1743324A1 (en) 2007-01-17
JP2007536587A (en) 2007-12-13

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