Per $Summary, please update to webrtc-audio-processing-0.2 , this latest version is required by pulseaudio-8.99 (and newer) for it's noise-cancellation feature.
Looks like this is only used by pulseaudio, so should be safe to update along with it. I'll prep an update.
unfortunately it's broken for big endian arches ... wav_header.cc:132:2: error: #error "Write be-to-le conversion functions" ... A separate bug report will follow.
built ok for primary archs (for now)