Headset having a microphone

A method of improving audio sensitivity for a headset and for reducing the background noise in a voice signal transmitted from the headset, the headset comprising a headphone and a microphone unit comprising at least a first and a second microphone, said second microphone being user positionable, and at least one beam former, the method comprising;

• allowing the user to move at least one of said microphone on a moveable boom whose position is user selectable and hence not known to be an optimal position for noise cancellation;
• generating at least first and second audio signals from the at least first and second microphones;
• processing the first and second audio signals using at least one beam former, so as to approximate a power spectrum of an output audio signal to a power spectrum of the first audio signal;
• receiving an acoustic signal by the at least first and second microphones,
• generating a first audio signal and a second audio signal derived from the at least first and second microphones,
• analyzing the first and second audio signals to determine one or more equalization filter coefficients,
• equalizing the second audio signal according to the determined one or more equalization filter coefficients to provide an output audio signal, wherein the one or more equalization filter coefficients are determined so as to approximate a power spectrum of the transmitted output audio signal to a power spectrum of the first audio signal, in order to reduce background noise which is transmitted from the headset, regardless of where the boom is positioned by the user to detect when a user is speaking.

A headset for voice communication having multiple microphones at least one of which is user positionable, configured to reduce background noise which is transmitted from the headset, the headset having at least two microphones at least one of said microphone being movable and located on a moveable boom whose position is user selectable and hence not in a known optimal position for noise cancellation and at least one beam former, comprising

• a speaker,
• a microphone unit comprising at least a first and a second microphone for picking up incoming sound and generating a first audio signal generated at least partly from the at least first microphone and a second audio signal being at least partly generated from the at least second microphone,
• a signal processor used for creating a transmitted audio output voice signal, said signal processor, including at least one beam former, being configured to receive and analyze the first audio signal and the second audio signal to determine one or more equalization filter coefficients,
• an equalization filter for reducing the background noise in the voice signal transmitted configured to receive the second audio signal and the one or more equalization coefficients, and to equalize the second audio signal from the first audio signal so as to approximate a power spectrum of the output audio signal to a power spectrum of the first audio signal, according to the determined one or more equalization filter coefficients to provide an output audio signal,
• wherein the one or more equalization filter coefficient are determined so as to approximate a power spectrum of the output audio signal to a power spectrum of the first audio signal and further including voice activity detector configured to detect when a user is speaking, regardless of where the boom is positioned by the user.