10. Speaker activity detection for distributed microphone systems in cars
Timo Matheja, Markus Buck, Tim Fingscheidt · 2017
In this chapter a new framework for energy-based acoustic speaker activity detection for distributed microphones in automotive environments is presented. The method relies on the evaluation of signal power ratios between the available multiple speaker-dedicated microphone signals. To obtain a robust full-band aswell as a robust frequency-selective speaker activity detection, the overall framework comprises three main parts. It is shown that the proposed detection mechanism yields an improvement in error rates compared to applying a basic speaker activity detection only.