Article details

Research area
Speech enhancement

The 6th Biennial Workshop on Digital Signal Processing for In-Vehicle Systems, Seoul, Korea


Timo Matheja, Markus Buck, Tim Fingscheidt

Speaker activity detection for distributed microphone systems in cars


In this contribution 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 fullband as well 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.

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