DK2369858T3 - Komprimering af dynamikomfang under anvendelse af digital frekvenswarping - Google Patents

Komprimering af dynamikomfang under anvendelse af digital frekvenswarping Download PDF

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Publication number
DK2369858T3
DK2369858T3 DK11157715.1T DK11157715T DK2369858T3 DK 2369858 T3 DK2369858 T3 DK 2369858T3 DK 11157715 T DK11157715 T DK 11157715T DK 2369858 T3 DK2369858 T3 DK 2369858T3
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DK
Denmark
Prior art keywords
frequency
warped
signal
fft
filter
Prior art date
Application number
DK11157715.1T
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English (en)
Inventor
James Mitchell Kates
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Gn Resound As
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.)
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Publication of DK2369858T3 publication Critical patent/DK2369858T3/da

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/353—Frequency, e.g. frequency shift or compression
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/06—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour
    • G10H1/12—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by filtering complex waveforms
    • G10H1/125—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by filtering complex waveforms using a digital filter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
    • G10H2250/055—Filters for musical processing or musical effects; Filter responses, filter architecture, filter coefficients or control parameters therefor
    • G10H2250/111—Impulse response, i.e. filters defined or specifed by their temporal impulse response features, e.g. for echo or reverberation applications
    • G10H2250/115—FIR impulse, e.g. for echoes or room acoustics, the shape of the impulse response is specified in particular according to delay times
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
    • G10H2250/131—Mathematical functions for musical analysis, processing, synthesis or composition
    • G10H2250/215—Transforms, i.e. mathematical transforms into domains appropriate for musical signal processing, coding or compression
    • G10H2250/235—Fourier transform; Discrete Fourier Transform [DFT]; Fast Fourier Transform [FFT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Claims (2)

1. Høreapparat omfattende: en mikrofon til at tilvejebringe et indgangssignal; en signalprocessor, som er udformet til at behandle indgangssignalet med henblik på at tilvejebringe et udgangssignal; og en transducer udformet til at omdanne udgangssignalet til et lydsignal; hvor signalprocessoren er udformet til at generere et warpet frekvenssignal ud fra indgangssignalet; signalprocessoren yderligere er udformet til at generere et hørehæmnings-korrigeret warpet frekvenssignal ud fra det warpede frekvenssignal ved at behandle det warpede frekvenssignal i henhold til en hørehæmnings-korrek-tionsalgoritme og udføre mindst en del af signalbehandlingen i et frekvensdomæne.
2. Høreapparat omfattende: en mikrofon til at tilvejebringe et indgangssignal; en signalprocessor, som er udformet til at behandle indgangssignalet med henblik på at tilvejebringe et udgangssignal; og en transducer udformet til at omdanne udgangssignalet til et lydsignal; hvor signalprocessoren er udformet til at generere et warpet frekvenssignal ud fra indgangssignalet; signalprocessoren yderligere er udformet til at generere et hørehæmnings-korrigeret warpet frekvenssignal ud fra det warpede frekvenssignal ved at behandle det warpede frekvenssignal i henhold til en hørehæmnings-korrek-tionsalgoritme, og hvor processoren omfatter et warpet ikke-rekursivt filter, og hvor koefficienterne af det warpede ikke-rekursive filter har en lige symmetri.
DK11157715.1T 2001-08-08 2002-08-05 Komprimering af dynamikomfang under anvendelse af digital frekvenswarping DK2369858T3 (da)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US31087101P 2001-08-08 2001-08-08
US10/008,268 US7277554B2 (en) 2001-08-08 2001-11-13 Dynamic range compression using digital frequency warping
EP02750424A EP1433359B1 (en) 2001-08-08 2002-08-05 Dynamic range compression using digital frequency warping

Publications (1)

Publication Number Publication Date
DK2369858T3 true DK2369858T3 (da) 2015-01-19

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Family Applications (2)

Application Number Title Priority Date Filing Date
DK02750424.0T DK1433359T3 (da) 2001-08-08 2002-08-05 Dynamikområdekompression ved anvendelse af digital frekvenswarping
DK11157715.1T DK2369858T3 (da) 2001-08-08 2002-08-05 Komprimering af dynamikomfang under anvendelse af digital frekvenswarping

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DK02750424.0T DK1433359T3 (da) 2001-08-08 2002-08-05 Dynamikområdekompression ved anvendelse af digital frekvenswarping

Country Status (6)

Country Link
US (4) US7277554B2 (da)
EP (2) EP1433359B1 (da)
JP (1) JP4252898B2 (da)
CN (1) CN1640190B (da)
DK (2) DK1433359T3 (da)
WO (1) WO2003015468A1 (da)

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US7277554B2 (en) 2007-10-02
JP4252898B2 (ja) 2009-04-08
US20030072464A1 (en) 2003-04-17
EP1433359B1 (en) 2012-06-13
CN1640190B (zh) 2010-06-16
EP2369858A3 (en) 2012-02-22
US8014549B2 (en) 2011-09-06
EP1433359A4 (en) 2008-12-17
US20060008101A1 (en) 2006-01-12
US20030081804A1 (en) 2003-05-01
US20080175422A1 (en) 2008-07-24
WO2003015468A1 (en) 2003-02-20
EP2369858B1 (en) 2014-10-15
JP2004538734A (ja) 2004-12-24
US6980665B2 (en) 2005-12-27
EP2369858A2 (en) 2011-09-28
US7343022B2 (en) 2008-03-11
EP1433359A1 (en) 2004-06-30
DK1433359T3 (da) 2012-08-27
CN1640190A (zh) 2005-07-13

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