Georgi Gerganov 83c742f1a7 whisper : add option to speed up the audio tempo by x2
Using a Phase Vocoder for speeding up the audio tempo by scaling down
the frequencies in the frequency domain.

This reduces the computation in the Encoder by a factor of 2.
The transcription accuracy is degraded, but for slow to normal speech -
it seems to be still very good.

I think this can find application for real-time transcription - i.e. the
"stream" example.
2022-11-13 16:25:43 +02:00
..
2022-11-04 22:26:08 +02:00
2022-10-24 18:23:07 +03:00