Method and system of varying mechanical vibrations at a microphone

A system comprising:

• a microphone;
• a first speaker configured for receiving a first input signal and generating a first vibration force;
• a signal transformation unit receiving the first input signal and performing a signal transformation thereon to produce a transformed input signal for varying an amount of mechanical vibration at the microphone;
• and
• a second speaker configured for receiving the transformed input signal and generating a second vibration force;
• wherein the second vibration force is in an opposite direction to that of the first vibration force and offsets at least part of the first vibration force to vary the amount of mechanical vibration at the microphone.

A method for varying an amount of mechanical coupling between a microphone and two speakers in a speakerphone comprising:

• receiving an input signal;
• sending a copy of the input signal to a first speaker;
• performing a signal transformation on the input signal to produce a transformed input signal;
• and
• transmitting the transformed input signal to a second speaker;
• wherein:
• the first speaker generates a first vibration force in response to the input signal, and
• the second speaker generates a second vibration force in response to the transformed input signal, the second vibration force being in an opposite direction to that of the first vibration force and offsetting at least part of the first vibration force.