HELMHOLTZ RESONATOR SOUND ABSORBING DEVICE INCLUDING A THIN FILM AND A SOUND-ABSORBING MATERIAL CAPABLE OF ABSORBING LOW FREQUENCY BAND NOISE, INTERMEDIATE FREQUENCY BAND NOISE, AND HIGH FREQUENCY BAND NOISE

摘要

PURPOSE: A Helmholtz resonator sound absorbing device including a thin film and a sound-absorbing material are provided to install an absorbing material installed between a thin film and a Helmholtz resonator, thereby removing noise in a wide frequency band.;CONSTITUTION: A Helmholtz resonator sound absorbing device including a thin film and a sound-absorbing material includes a thin film, a Helmholtz resonator, and a sound absorbing material. The sound absorbing material is installed between the thin film and the Helmholtz resonator. In the Helmholtz resonator, all parts except a neck part are sealed, and the absorbing material covers the neck part of the Helmholtz resonator.;COPYRIGHT KIPO 2013