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Monday, July 8 • 11:00 - 11:20
REFINEMENT ON EV INTERIOR BOOMING FROM ENHANCED EXTERIOR WARNING SOUND BY USING ACTIVE NOISE CONTROL TECHNOLOGY

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In order to design the exterior sporty warning sound for EVs without annoying the drivers and passengers, a phonating solution coupling acoustical vehicle alert system (AVAS) and active noise control (ANC) is proposed. Considering the relevant standards of warning sound, the frequency range of cancellation and the sound quality inside and outside the vehicle, a phonation strategy of the strengthened warning sound is designed, which combines multiple low-frequency characteristic sounds with the high-frequency sound required by the regulations. Meanwhile, the active noise control is carried out for low order noise within 300Hz. The test results demonstrate that the exterior warning sound not only meets the requirements of sound pressure level, but also resembles the booming of sports car. Owing to the active noise control, the interior booming issue caused by the exterior warning sound is solved simultaneously so that the subjective assessment of the interior sound is improved greatly.

Moderators
avatar for Alain Berry

Alain Berry

Professor, Université de Sherbrooke
avatar for Philippe-Aubert Gauthier

Philippe-Aubert Gauthier

Professor, Groupe Acoustique Université de Sherbrooke, Université de Sherbrooke

Authors

Monday July 8, 2019 11:00 - 11:20 EDT
Westmount 6
  T02 Act. noise & vib. cntrl., RS01 Active cntrl of snd & vibr