WO2001086631A3 - Analysis of and noise reduction in a complex waveform - Google Patents

Analysis of and noise reduction in a complex waveform Download PDF

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Publication number
WO2001086631A3
WO2001086631A3 PCT/US2001/040664 US0140664W WO0186631A3 WO 2001086631 A3 WO2001086631 A3 WO 2001086631A3 US 0140664 W US0140664 W US 0140664W WO 0186631 A3 WO0186631 A3 WO 0186631A3
Authority
WO
WIPO (PCT)
Prior art keywords
partial
complex waveform
noise reduction
accentuation
analysis
Prior art date
Application number
PCT/US2001/040664
Other languages
French (fr)
Other versions
WO2001086631A2 (en
Inventor
Jack W Smith
Paul Reed Smith
Gary E Gilbert
Original Assignee
Smith Paul Reed Guitars Ltd
Jack W Smith
Paul Reed Smith
Gary E Gilbert
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 Smith Paul Reed Guitars Ltd, Jack W Smith, Paul Reed Smith, Gary E Gilbert filed Critical Smith Paul Reed Guitars Ltd
Priority to AU2001259824A priority Critical patent/AU2001259824A1/en
Publication of WO2001086631A2 publication Critical patent/WO2001086631A2/en
Publication of WO2001086631A3 publication Critical patent/WO2001086631A3/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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0232—Processing in the frequency domain

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • General Health & Medical Sciences (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

A method is provided for analysis and noise reduction in a complex waveform using the methods of Fast Find, Harmonic Adjustment and Partial Accentuation. The Fast Find method determines the harmonic content of each tone spectra in the complex waveform. The Harmonic Adjustment method amplifies harmonics in the tone spectra below a crossover frequency. The Partial Accentuation amplifies partials in the complex waveform above the crossover frequency. A Partial Consolidation method consolidates partials by frequency and time into narrow, short term frequency bands for modification by Partial/Resonant Band Accentuation. By combining these methods, noise reduction, audio clarification and other audio enhancements and characterizations are accomplished.
PCT/US2001/040664 2000-05-05 2001-05-04 Analysis of and noise reduction in a complex waveform WO2001086631A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001259824A AU2001259824A1 (en) 2000-05-05 2001-05-04 Analysis of and noise reduction in a complex waveform

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20206000P 2000-05-05 2000-05-05
US60/202,060 2000-05-05

Publications (2)

Publication Number Publication Date
WO2001086631A2 WO2001086631A2 (en) 2001-11-15
WO2001086631A3 true WO2001086631A3 (en) 2002-03-21

Family

ID=22748359

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/040664 WO2001086631A2 (en) 2000-05-05 2001-05-04 Analysis of and noise reduction in a complex waveform

Country Status (2)

Country Link
AU (1) AU2001259824A1 (en)
WO (1) WO2001086631A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105159088B (en) * 2015-09-14 2017-11-24 宁波罗杰克智能科技有限公司 A kind of evaluation method of cross-over frequency
US10020788B2 (en) 2016-03-02 2018-07-10 Bose Corporation Vehicle engine sound management

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991488A (en) * 1988-08-12 1991-02-12 Fala Joseph M Acoustic detection of note bending in stringed M.I.D.I. compatible musical instruments
US5033353A (en) * 1988-04-14 1991-07-23 Fala Joseph M Note sensing in M.I.D.I. guitars and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5033353A (en) * 1988-04-14 1991-07-23 Fala Joseph M Note sensing in M.I.D.I. guitars and the like
US4991488A (en) * 1988-08-12 1991-02-12 Fala Joseph M Acoustic detection of note bending in stringed M.I.D.I. compatible musical instruments

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LIN ET AL.: "Implementation of non-deterministic PWM for inverter drives", PROCEEDINGS OF THE IEEE SYMPOSIUM ON INDUSTRIAL ELECTRONICS, 16 July 1999 (1999-07-16), pages 813 - 818, XP010354018 *

Also Published As

Publication number Publication date
WO2001086631A2 (en) 2001-11-15
AU2001259824A1 (en) 2001-11-20

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