Speech intelligibility auto body panel contribution analysis and optimization

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (7) : 68-74.

ZENG Falin1, LIU Yachen2, HU Feng2

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Abstract

As an important part of studying influence of auto body vibration on its interior noise, the analysis of auto body panel contribution is usually realized using acoustic transfer vector (ATV) simulation. Here, in order to further explore effects of vehicle body vibration on its interior speech intelligibility, objective parameters of speech intelligibility were compared with subjective evaluation scores to take the speech intelligibility index (SII) under unsteady acceleration condition as the evaluation index, and ATV simulation method was used to find out the panel having the maximum impact on speech intelligibility. The analysis results showed that the body roof panel has the maximum effect on speech intelligibility. Aiming at the analysis results, the method of combining genetic algorithm and ATV inverse operation simulation was used to perform targeted body roof damping and verify it. The results showed that the optimized design based on contribution of speech intelligibility of body panel can effectively improve the interior speech clarity under the unsteady full throttle acceleration condition, and improve the interior sound quality.

Key words

auto body panel contribution

/ acoustic transfer vector (ATV) calculation / speech intelligibility;speech intelligibility index (SII) / genetic algorithm

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ZENG Falin1, LIU Yachen2, HU Feng2. Speech intelligibility auto body panel contribution analysis and optimization[J]. Journal of Vibration and Shock, 2021, 40(7): 68-74

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