![]() If microphone array processing is disabled, multi-channel input is folded down to one channel for AEC processing. The voice capture DMO includes the following DSP components:Ĭurrently the voice capture DMO supports only single-channel acoustic echo cancellation (AEC), so the output from the speaker line must be single-channel. Windows provides API to get this mixed audio signal going out to audio output devices: "Loopback Recording".Īlso, Windows provides another software component and API: Voice Capture DSP: The quoted statement means that in order to remove echo it is useful and necessary to have access to audio signal played through speakers because it will come back to michrophone or other audio recording hardware and would create an echo problem unless it is effectively subtracted.
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