Patent ID: 8374371

Claim:
A microphone, comprising: a) a stiff diaphragm; b) a resilient support for the diaphragm, the resilient support being configured to permit the diaphragm to freely respond to acoustic waves by displacement thereof; c) a housing defining, with the diaphragm, a region having a volume comprising at least a space behind the diaphragm, wherein a displacement of the diaphragm changes a volume of the region; d) at least one port, communicating between the region and an environment, wherein a responsivity of the diaphragm to displacement by acoustic waves in an audio frequency acoustic range is principally defined by a volume of the region and a configuration of the at least one port, and a responsivity of the diaphragm to displacement by acoustic waves in an audio frequency acoustic range is not principally defined by a stiffness of the resilient support.