Speex dev - Aug 2020 - New needs for VoiceAI preprocessing by old tools

Hi,

Xiph has done some really good work but since Speex things have seemed quite
quiet.
Devs to hobbyists have a huge battle with VoiceAI audio processing and even when
available extremely similar routines are separated across libs so that much
process duplication occurs and increases load.

The Alsa-plugins of Speex echo just don’t seem to work whilst repos using the
speex libs do.
https://github.com/voice-engine/ec

I actually use the speex AGC Alsa-plugin as its a great tool and then run Echo
via the above.
Coupled to WebRTC_VAD and a python based MFCC routine.
Beamforming and DOA I have given up hope for as I am running so many extremely
similar FFT routines concurrently in different process space that my load usage
makes me believe there isn’t a chance.

All of them have extremely similar frame based spectra analysis collection that
collate and process over different windows for different process but much of the
input process are almost identical heavy load FFT process that for some reason
we duplicate because the Linux landscape is one of scattered audio processing
libs.

Linux currently has much work in terms of open source ASR, TTS, TensorFlow
frameworks but what we have available in terms of audio pre-processing are
scattered individual segments of the audio chain and create a seriously
inefficient chain.
These are old tools but the whole chain to MFCC output just doesn’t exist.

Stuart

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