Note that supporting 44.1kHz is fairly easy (if not really optimal) as the code to resample the input to an acceptable sampling rate (i.e. a multiple of 8kHz) is already present in the code, just not hooked into the actual VAD API.

The reason it can't be done without resampling is that the VAD code, for very good reasons, relies on filters designed and optimized for 8kHz sampled data. Arguably the right approach would be to have a parallel set of filters for 11025Hz data, which is, unfortunately, beyond my abilities in DSP.

Now accepting other sampling rates (70d848d) and has okay unit tests for VAD (93d02d5). Endpointer considered to be tested via Python but I'll add a small C unit test as well before merging.