Patent ID: 7450691
Filing Date: 2008-11-11
Classification: G10K,H04M,H04R

Abstract:
1. A communication device, comprising: a body portion; a microphone having a microphone output providing a first signal, the microphone being spatially distant from the body portion; an ambient noise compensation signal generator having an ambient noise compensation signal generator input connected to the microphone output and receiving the first signal, the ambient noise compensation signal generator producing an ambient noise compensation signal generator output; a time buffering device having a time buffer input connected to the microphone output and receiving the first signal, the time buffering device outputting a time buffered first signal; a mixer having (i) a first mixer input in communication with the microphone output via the time buffering device and receiving the time buffered first signal and (ii) a second mixer input connected to the ambient noise compensation signal generator output and (iii) a mixer output, wherein the time buffered first signal is synchronized with the ambient noise compensation signal generator output; and a transmitter having a transmitter input connected to the mixer output and a transmitter output in communication with an antenna, wherein the ambient noise picked up by the microphone is attenuated before being passed to the transmitter.