I've done some more work on new audio.output class version. It has a complete subthread framework including command passing. The thread opens AHI, in case of failure, object fails gracefully as it should, with error reported.

I've also started work on a variable rate audio resampler. It uses bandlimited resampling concept described by J. O. Smith. I've started from designing three resample filters, for three levels of quality. The first, low quality filter is ready. It has 257 coefficents in total and spans over 32 input samples (if no scaling is used). The filter ensures both aliasing distortions and filter interpolation distortions are kept below -40 dB.