WIRELESS HEADSET AND METHOD FOR ROBUST VOICE DATA COMMUNICATION

摘要

A wireless device for use with speech recognition applications comprises a frame generator (42) for generating successive frames from digitized original audio signals, the frames representing portions of the digitized audio signals. An autocorrelation circuit (42) generates a set of coefficients for each frame, the coefficient set being reflective of spectral characteristics of the audio signal portion represented by the frame. In one embodiment, the autocorrelation coefficients may be used to predict the original audio signal to be subtracted from the original audio signals and to generate residual signals. A Bluetooth transceiver (46) is configured for transmitting the set of coefficients and/or residual signals as data to another device, which utilizes the coefficients for speech applications.