Patent ID: 6768803
Filing Date: 2004-07-27
Classification: H04R

Abstract:
An acoustic filtering device, comprising:an input port for receiving an input acoustic signal to be processed; an acoustic signal processing device for producing an output acoustic signal in response to the input acoustic signal, said acoustic signal processing device including: a) a diaphragm within a path of propagation of the input acoustic signal, said diaphragm manifesting vibration in response to interaction with the input acoustic signal to generate the output acoustic signal; b) said acoustic signal processing device characterized by a frequency response such that the output acoustic signal spectrum level manifests predetermined differences with the input acoustic signal spectrum level; c) an energy dissipation device coupled to said diaphragm to inhibit vibratory movement of said diaphragm at a certain frequency; an acoustic output port for releasing the output acoustic signal produced by said acoustic signal processing device.