Identification Method of Vehicle Interior Airborne Noise Based on Pseudo-Random

Jie Liang; Rong Jiang Tang; Yin Han Gao; Tong Hang Zhao; Wen Jun Jiang; Bing Wu Lu

doi:10.4028/www.scientific.net/AMR.338.460

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 338Identification Method of Vehicle Interior Airborne...

Identification Method of Vehicle Interior Airborne Noise Based on Pseudo-Random

Abstract:

According to the source-path-receiver model of vehicle interior airborne noise, the correlative identification method of transfer function was proposed. Simulation results demonstrate that the method has excellent noise immunity performance. A m sequence generator whose shift clock frequency is adjustable and register series is optional was designed by complex programmable logic device CPLD and external circuit. The m sequence pseudo-random signal which was amplified by audio power amplifier drives the loudspeaker as sound source signal. The field tests indicate that compare with broadband white noise sweep method, the identification method based on m sequence technique has advantages in noise suppression.

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Periodical:

Advanced Materials Research (Volume 338)

Pages:

460-466

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.338.460

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Online since:

September 2011

Authors:

Jie Liang, Rong Jiang Tang, Yin Han Gao, Tong Hang Zhao, Wen Jun Jiang, Bing Wu Lu

Keywords:

Airborne Noise, Correlative Identification, Pseudo-Random Signal, Transfer Function

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