An acoustic system has an acoustic sensor and a processing circuit. The acoustic sensor includes a base, a microphone having a microphone diaphragm supported by the base, and a hot-wire anemometer having a set of hot-wire extending members supported by the base. The set of hot-wire extending members...http://www.google.de/patents/US6857312?utm_source=gb-gplus-sharePatent US6857312 - Systems and methods for sensing an acoustic signal using microelectromechanical systems technology
