An air induction housing having a perforated wall which simultaneously provides ample air entry into the air induction housing and excellent intake noise attenuation. The size, number and arrangement of the perforations is selected such that ample airflow is provided and audibility of intake noise is minimized, based upon simultaneous optimization of: providing a plurality of perforations which collectively have an opening size that accommodates all anticipated airflow requirements; sizing each of the perforations such that the airflow demand involves an airflow speed through each perforation that is below a predetermined threshold at which perforation airflow noise is generated; and arranging the perforation distribution in cooperation with configuring of the air induction housing to provide a highest level of intake noise attenuation.

 
Web www.patentalert.com

< Spiral cut stethoscope wrap

< Sound absorbing structure of electronic equipment

> Muffler of vehicle and exhaust apparatus using the same

> Floor silencer

~ 00605