Patent ID: 8868413

Claim:
A telecommunication device, comprising: a microphone array comprising a plurality of microphones, wherein each microphone receives an analogue acoustic signal; a position sensing device that determines how the telecommunication device is positioned in three-dimensions with respect to a user's mouth, wherein the position sensing device is an accelerometer and the accelerometer expresses the determined position as an output having three sub-vectors orthogonal in relation to each other, and a vector resulting from the sub-vectors pointing to the ground; at least one analogue/digital converter that converts an output of each microphone into a respective digital signal; a digital signal processor that performs signal processing on the digital signals to remove noise from the digital signals, the digital signal processor comprising: a controller, a plurality of delay circuits, each delay circuit delaying a respective one of the digital signals in accordance with a respective delay value from the controller, and a plurality of preamplifiers, each preamplifier adjusting gain and frequency response of a respective one of the digital signals in accordance with a respective gain value and a respective frequency response value from the controller, wherein the controller selects each delay, gain, and frequency response value based on the determined position of the telecommunication device.