An Adaptive Microphone Array for Hands–Free Communication
نویسندگان
چکیده
In this paper we present an adaptive microphone array to suppress coherent as well as incoherent noise in disturbed speech signals. We use a generalized sidelobe cancelling (GSC) structure implemented in the frequency domain, because it allows a separate handling of determining the adaptive look direction response to suppress incoherent noise and adjusting the adaptive filters for cancellation of coherent noise. The transfer function in the look direction is an adaptive Wiener–Filter which is estimated using the short time Fourier–Transform and the Nuttall/Carter method for spectrum estimation.
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تاریخ انتشار 1995