CA2209916A1 - A harmonic and frequency-locked loop pitch tracker and sound separation system - Google Patents

A harmonic and frequency-locked loop pitch tracker and sound separation system

Info

Publication number
CA2209916A1
CA2209916A1 CA002209916A CA2209916A CA2209916A1 CA 2209916 A1 CA2209916 A1 CA 2209916A1 CA 002209916 A CA002209916 A CA 002209916A CA 2209916 A CA2209916 A CA 2209916A CA 2209916 A1 CA2209916 A1 CA 2209916A1
Authority
CA
Canada
Prior art keywords
locked loop
frequency
harmonic
separation system
loop pitch
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.)
Granted
Application number
CA002209916A
Other languages
French (fr)
Other versions
CA2209916C (en
Inventor
Avery Wang
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.)
Leland Stanford Junior University
Original Assignee
The Board Of Trustees Of The Leland Stanford Junior University
Avery Wang
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
Priority claimed from US08/369,804 external-priority patent/US5812737A/en
Application filed by The Board Of Trustees Of The Leland Stanford Junior University, Avery Wang filed Critical The Board Of Trustees Of The Leland Stanford Junior University
Publication of CA2209916A1 publication Critical patent/CA2209916A1/en
Application granted granted Critical
Publication of CA2209916C publication Critical patent/CA2209916C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/90—Pitch determination of speech signals
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/90—Pitch determination of speech signals
    • G10L2025/906—Pitch tracking
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/15—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being formant information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Frequency locked loop is applied to pitch and formant tracking. The input is demodulated (104), low pass filtered (108) and then remodulated (110) using a complex conjugate formed with a feed-forward delay (112). A feedback loop is provided using integration (120 and 124) for adjusting phase shifts. Phase shift is measured using a arctangent function (114).
CA002209916A 1995-01-09 1996-01-11 A harmonic and frequency-locked loop pitch tracker and sound separation system Expired - Fee Related CA2209916C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/369,804 1995-01-09
US08/369,804 US5812737A (en) 1995-01-09 1995-01-09 Harmonic and frequency-locked loop pitch tracker and sound separation system
PCT/US1996/000350 WO1996021926A1 (en) 1995-01-09 1996-01-11 A harmonic and frequency-locked loop pitch tracker and sound separation system

Publications (2)

Publication Number Publication Date
CA2209916A1 true CA2209916A1 (en) 1996-07-18
CA2209916C CA2209916C (en) 2006-07-18

Family

ID=36694040

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002209916A Expired - Fee Related CA2209916C (en) 1995-01-09 1996-01-11 A harmonic and frequency-locked loop pitch tracker and sound separation system

Country Status (1)

Country Link
CA (1) CA2209916C (en)

Also Published As

Publication number Publication date
CA2209916C (en) 2006-07-18

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Legal Events

Date Code Title Description
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