Multi-source statistical optimal near-field acoustical holography method

The invention discloses a multi-source statistical optimal near-field acoustical holography method. M microphones are arranged in a near-field radiation area of a sound source so as to measure and obtain holographic surface sound pressure pH; aiming at a sound source in a holographic surface coverag...

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Hauptverfasser:	BO BICHENG, GAO LIN, NIE ZELIN, SONG CHAO, QIAO BAIJIE, CHENG WEI, CHEN XUEFENG, WANG YAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING PHYSICS TESTING
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creator	BO BICHENG GAO LIN NIE ZELIN SONG CHAO QIAO BAIJIE CHENG WEI CHEN XUEFENG WANG YAN
description	The invention discloses a multi-source statistical optimal near-field acoustical holography method. M microphones are arranged in a near-field radiation area of a sound source so as to measure and obtain holographic surface sound pressure pH; aiming at a sound source in a holographic surface coverage range, respectively constructing a multi-source wave function model by utilizing a statistical optimal near-field acoustical holography method; aiming at a sound source outside a holographic surface coverage range, flexibly constructing a multi-source wave function model by utilizing an acoustic Helmholtz equation solution set, a Green function superposition set or a finite element method; and based on a wave function model of a holographic surface and a reconstruction surface, a transfer coefficient is solved by using a Tikhonov regularization method, so that rapid reconstruction of a multi-source sound field is realized. Compared with a traditional multi-source statistical optimal near-field acoustical holograp
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M microphones are arranged in a near-field radiation area of a sound source so as to measure and obtain holographic surface sound pressure pH; aiming at a sound source in a holographic surface coverage range, respectively constructing a multi-source wave function model by utilizing a statistical optimal near-field acoustical holography method; aiming at a sound source outside a holographic surface coverage range, flexibly constructing a multi-source wave function model by utilizing an acoustic Helmholtz equation solution set, a Green function superposition set or a finite element method; and based on a wave function model of a holographic surface and a reconstruction surface, a transfer coefficient is solved by using a Tikhonov regularization method, so that rapid reconstruction of a multi-source sound field is realized. 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subjects	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING PHYSICS TESTING
title	Multi-source statistical optimal near-field acoustical holography method
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