Speakerphone system that corrects for mechanical vibrations on an enclosure of the speakerphone using an output of a mechanical vibration sensor and an output of a microphone

A speakerphone system (system) comprising:

• at least one mechanical vibration sensor (MVS) adapted to convert mechanical vibrations in a speakerphone enclosure (enclosure) to a mechanical vibration error signal, and output the same as an MVS output signal;
• at least one microphone (mic) adapted to convert an input sound acoustic signal into an input sound electrical signal and to output the same as a mic output signal;
• and
• circuitry adapted to subtract the MVS output signal from the mic output signal and output the resultant signal as a speakerphone output signal, wherein the circuitry comprises:
• a first receiver adapted to receive the output of the MVS;
• a second receiver adapted to receive the output of the mic;
• and
• additional circuitry adapted to perform the subtraction of the MVS output signal from the mic output signal, and wherein the first receiver comprises:
• a first analog signal line receiver adapted to receive the output of the MVS;
• an amplifier adapted to amplify substantially only audio frequency signals;
• and
• a filter adapted to pass substantially only audio frequency signals, and wherein the second receiver comprises:
• a second analog signal line receiver adapted to receive the output of the mic;
• an amplifier adapted to amplify substantially only audio frequency signals;
• and
• a filter adapted to pass substantially only audio frequency signals.