FR3111729B1 - Digital audio processing chain - Google Patents

Digital audio processing chain Download PDF

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Publication number
FR3111729B1
FR3111729B1 FR2006510A FR2006510A FR3111729B1 FR 3111729 B1 FR3111729 B1 FR 3111729B1 FR 2006510 A FR2006510 A FR 2006510A FR 2006510 A FR2006510 A FR 2006510A FR 3111729 B1 FR3111729 B1 FR 3111729B1
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FR
France
Prior art keywords
bits
digital audio
digital
elementary
input
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.)
Active
Application number
FR2006510A
Other languages
French (fr)
Other versions
FR3111729A1 (en
Inventor
Alexandre Huffenus
Nicholas Peter Sedcole
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.)
Devialet SA
Original Assignee
Devialet SA
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 Devialet SA filed Critical Devialet SA
Priority to FR2006510A priority Critical patent/FR3111729B1/en
Priority to PCT/EP2021/066957 priority patent/WO2021259915A1/en
Publication of FR3111729A1 publication Critical patent/FR3111729A1/en
Application granted granted Critical
Publication of FR3111729B1 publication Critical patent/FR3111729B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/392—Arrangements for selecting among plural operation modes, e.g. for multi-standard operation
    • H03M3/394—Arrangements for selecting among plural operation modes, e.g. for multi-standard operation among different orders of the loop filter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/39—Structural details of delta-sigma modulators, e.g. incremental delta-sigma modulators
    • H03M3/392—Arrangements for selecting among plural operation modes, e.g. for multi-standard operation
    • H03M3/396—Arrangements for selecting among plural operation modes, e.g. for multi-standard operation among different frequency bands
    • 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
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3031—Hardware, e.g. architecture
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3053—Speeding up computation or convergence, or decreasing the computational load
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/30—Delta-sigma modulation
    • H03M3/50—Digital/analogue converters using delta-sigma modulation as an intermediate step

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

Chaîne numérique de traitement audio La chaîne de traitement audio comporte : - une entrée numérique pour un signal numérique audio à traiter, codé sur un nombre réduit de bits inférieur à 6, - un bloc de traitement recevant en entrée le signal numérique audio à traiter, et - une sortie numérique pour un signal numérique audio traité. Le bloc de traitement comporte : - au moins deux modules élémentaires de traitement à entrée sur le nombre réduit de bits (32A, … 32N), chaque module élémentaire (32A, … 32N) comportant un réseau (34) d’opérateurs arithmétiques et, en sortie du réseau (34) un modulateur élémentaire ΣΔ (36) d’abaissement du codage sur moins de 6 bits ; - un réseau de communication (75), auquel sont connectés l’entrée numérique, la sortie numérique et les modules élémentaires (32A, … 32N) ; et - au moins une liaison multi-bit (77) avec un codage sur un nombre élevé de bits supérieur au nombre réduit de bits, reliant au moins deux réseaux d’opérateurs arithmétiques (34). Figure pour l'abrégé : Figure 5Digital audio processing chain The audio processing chain comprises: - a digital input for a digital audio signal to be processed, coded on a reduced number of bits less than 6, - a processing block receiving the digital audio signal as input, and - a digital output for a processed digital audio signal. The processing block comprises: - at least two elementary processing modules with input on the reduced number of bits (32A, … 32N), each elementary module (32A, … 32N) comprising a network (34) of arithmetic operators and, at the output of the network (34) an elementary modulator ΣΔ (36) for lowering the coding to less than 6 bits; - a communication network (75), to which the digital input, the digital output and the elementary modules (32A, … 32N) are connected; and - at least one multi-bit link (77) with coding on a high number of bits greater than the reduced number of bits, connecting at least two networks of arithmetic operators (34). Figure for abstract: Figure 5

FR2006510A 2020-06-22 2020-06-22 Digital audio processing chain Active FR3111729B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2006510A FR3111729B1 (en) 2020-06-22 2020-06-22 Digital audio processing chain
PCT/EP2021/066957 WO2021259915A1 (en) 2020-06-22 2021-06-22 Digital audio processing system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2006510A FR3111729B1 (en) 2020-06-22 2020-06-22 Digital audio processing chain
FR2006510 2020-06-22

Publications (2)

Publication Number Publication Date
FR3111729A1 FR3111729A1 (en) 2021-12-24
FR3111729B1 true FR3111729B1 (en) 2022-10-21

Family

ID=73698905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2006510A Active FR3111729B1 (en) 2020-06-22 2020-06-22 Digital audio processing chain

Country Status (2)

Country Link
FR (1) FR3111729B1 (en)
WO (1) WO2021259915A1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234658B1 (en) * 1996-06-07 2001-05-22 Duality Semiconductor, Inc. Method and apparatus for producing signal processing circuits in the delta sigma domain

Also Published As

Publication number Publication date
WO2021259915A1 (en) 2021-12-30
FR3111729A1 (en) 2021-12-24

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