ES2143952B1 - ACTIVE ATTENUATOR OF ACOUSTIC NOISE THROUGH GENETIC ADAPTIVE ALGORITHM. - Google Patents

ACTIVE ATTENUATOR OF ACOUSTIC NOISE THROUGH GENETIC ADAPTIVE ALGORITHM.

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Publication number
ES2143952B1
ES2143952B1 ES9801040A ES9801040A ES2143952B1 ES 2143952 B1 ES2143952 B1 ES 2143952B1 ES 9801040 A ES9801040 A ES 9801040A ES 9801040 A ES9801040 A ES 9801040A ES 2143952 B1 ES2143952 B1 ES 2143952B1
Authority
ES
Spain
Prior art keywords
adaptive algorithm
acoustic
noise
genetic adaptive
acoustic noise
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.)
Expired - Fee Related
Application number
ES9801040A
Other languages
Spanish (es)
Other versions
ES2143952A1 (en
Inventor
Olivares Antonio Minguez
Lopez Manuel Recuero
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.)
Universidad Politecnica de Madrid
Original Assignee
Universidad Politecnica de Madrid
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 Universidad Politecnica de Madrid filed Critical Universidad Politecnica de Madrid
Priority to ES9801040A priority Critical patent/ES2143952B1/en
Publication of ES2143952A1 publication Critical patent/ES2143952A1/en
Application granted granted Critical
Publication of ES2143952B1 publication Critical patent/ES2143952B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Atenuador activo de ruido acústico mediante algoritmo adaptativo genético. Consiste en un sistema de control desarrollado sobre una tarjeta de procesado de señal (DSP) que genera señales eléctricas que amplificadas y convertidas en ondas acústicas de presión por un altavoz se superponen en contra-fase con las ondas de presión del ruido, produciendo la atenuación de este. El controlador, basado en un algoritmo adaptativo genético, sólo atenúa el tipo de ruido que se recoge por un sensor (micrófono) y optimiza su funcionamiento en función de la señal eléctrica que se recoge por otro micrófono situado en la zona de cancelación acústica. El sistema produce atenuaciones acústicas superiores a 25 dB para ruidos periódicos de baja frecuencia (60-500 HZ), ya sean estos de frecuencia fija o variable.Active acoustic noise attenuator using a genetic adaptive algorithm. It consists of a control system developed on a signal processing card (DSP) that generates electrical signals that amplified and converted into acoustic pressure waves by a speaker are superimposed in counter-phase with the pressure waves of the noise, producing attenuation of this. The controller, based on a genetic adaptive algorithm, only attenuates the type of noise that is collected by a sensor (microphone) and optimizes its operation based on the electrical signal that is collected by another microphone located in the acoustic cancellation zone. The system produces acoustic attenuations higher than 25 dB for periodic low frequency noises (60-500 HZ), whether they are of fixed or variable frequency.

ES9801040A 1998-05-20 1998-05-20 ACTIVE ATTENUATOR OF ACOUSTIC NOISE THROUGH GENETIC ADAPTIVE ALGORITHM. Expired - Fee Related ES2143952B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9801040A ES2143952B1 (en) 1998-05-20 1998-05-20 ACTIVE ATTENUATOR OF ACOUSTIC NOISE THROUGH GENETIC ADAPTIVE ALGORITHM.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9801040A ES2143952B1 (en) 1998-05-20 1998-05-20 ACTIVE ATTENUATOR OF ACOUSTIC NOISE THROUGH GENETIC ADAPTIVE ALGORITHM.

Publications (2)

Publication Number Publication Date
ES2143952A1 ES2143952A1 (en) 2000-05-16
ES2143952B1 true ES2143952B1 (en) 2000-12-01

Family

ID=8303831

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9801040A Expired - Fee Related ES2143952B1 (en) 1998-05-20 1998-05-20 ACTIVE ATTENUATOR OF ACOUSTIC NOISE THROUGH GENETIC ADAPTIVE ALGORITHM.

Country Status (1)

Country Link
ES (1) ES2143952B1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2573389B2 (en) * 1990-03-23 1997-01-22 晴夫 浜田 Electronic silencing method and device
FI94563C (en) * 1991-10-31 1995-09-25 Nokia Deutschland Gmbh Active noise canceling system
FI94564C (en) * 1992-02-14 1995-09-25 Nokia Deutschland Gmbh Active noise suppression system
WO1994029848A1 (en) * 1993-06-11 1994-12-22 Caterpillar Inc. Error path transfer function modelling in active noise cancellation
US5796849A (en) * 1994-11-08 1998-08-18 Bolt, Beranek And Newman Inc. Active noise and vibration control system accounting for time varying plant, using residual signal to create probe signal
JP3751359B2 (en) * 1996-03-21 2006-03-01 本田技研工業株式会社 Vibration noise control device
EP0814456A3 (en) * 1996-06-17 1998-10-07 Lord Corporation Active noise or vibration control (ANVC) system and method including enhanced reference signals
JPH10222172A (en) * 1997-02-08 1998-08-21 Sanyo Electric Co Ltd Active noise controller using genetic algorithm

Also Published As

Publication number Publication date
ES2143952A1 (en) 2000-05-16

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