Patent ID: 7835773
Filing Date: 2010-11-16
Classification: H04M

Abstract:
1. A mobile communication device, comprising: an antenna configured to receive signals; a processor; a radio coupled with the antenna and the processor, the radio configured to receive the signals from the antenna, extract audio signals from the received signals and pass the extracted audio signals to the processor, where the extracted audio signals include speech signals; a microphone configured to receive sound from the surrounding environment including noise, the microphone being coupled to the processor, whereby the processor configured to estimate the level of the noise and to determine spectral information related to the noise; and a filter coupled to the processor and configured to be controlled by the processor responsive the noise level estimation and the determined spectral information, where the processor is configured to adjust the gain response of the filter and a width and a center frequency of a pass band of the filter employed to filter the extracted audio signals so as to exclude frequency components where the noise is prevalent from the extracted audio signals, the frequency components where the noise is prevalent being obtained from the spectral information, wherein the center frequency of the pass band is moved to a higher frequency range if the noise is prevalent in a lower frequency range and wherein the center frequency of the pass band is moved to the lower frequency range if the noise is prevalent in the higher frequency range.