A multi-microphone device (eg. a mobile phone, fig. 2B) generates a sidetone based on the mode of operation (eg. phone call, speaker recognition, automatic speech recognition ASR) of the device according to the microphone signals (M1, M2). The sidetone may accentuate higher frequencies of the speakers voice, enhance the signal-to-noise ratio, cancel bone-conducted speech or compensate for an occlusion effect.
Frequency-dependent sidetones for improved automatic speech recognition,speaker recognition, and occlusion effect correction