发明名称 Tunable sound transmission device for a motor vehicle
摘要 A tunable sound transmission device for transmitting an engine rumble sound into an interior of a motor vehicle includes a transmission line having a first end in acoustic communication with an air intake tract of an engine. A flexible membrane is positioned to sealably close off a portion of the transmission line thereby dividing the transmission line into two portions that are airflow isolated from each other. A receptacle is arranged at the second end of the transmission line and a user changeable sound characterization device is replaceably installed into the receptacle. The sound characterization device is configured and adapted to provide an intended frequency dependent sound attenuation characteristic and an overall sound dampening level for the transmitted engine sound.
申请公布号 US8011469(B2) 申请公布日期 2011.09.06
申请号 US20090641655 申请日期 2009.12.18
申请人 MANN & HUMMEL GMBH 发明人 OLSON BRAD
分类号 F02B77/13;F02M35/10 主分类号 F02B77/13
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