Patent ID: 8824692
Filing Date: 2014-09-02
Classification: H04R

Abstract:
1. A microphone comprising: a first acoustic sensor having a first output; a second acoustic sensor separated by a distance from the first acoustic sensor and having a second output; a sound source acoustically coupled to the first and second acoustic sensors, the sound source including an input; enclosed sound conducting channels spanning continuously from the sound source to terminate at each of the first and second acoustic sensors, the enclosed sound conducting channels forming continuous acoustic transmission paths from the sound source to the first and second acoustic sensors; a processor electrically coupled to the input, the first output, and the second output, the processor being configured to activate the sound source to produce an acoustic calibration signal, the acoustic transmission paths conveying a respective portion of the acoustic calibration signal to each of the first and second acoustic sensors, the processor further configured to receive a first output and a second output from the respective acoustic sensors in response to the respective portions acoustic calibration signal; and the processor configured for determining one or more correction factors based on the received first and second outputs.