| 摘要 |
A sound attenuating device for standard helmets worn by riders of recreational vehicles is provided. The sound attenuating device includes low profile ear cups and compressible members mounted between the shell of the helmet and ear cups. The compressible members permit the ear cups to be moved away from the rider's face when doffing or donning the helmet and otherwise push the ear cups against the rider's face forming a tight seal between the rider's face and the ear cups around each ear. The means for attaching the compressible members to the helmet shell are non-penetrating so as to maintain the structural integrity and sound suppression characteristics of the shell.
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