GitLab

Summary:
Moves `add_noise`, `fftconvolve`, `convolve`, `speed`, `preemphasis`, and `deemphasis` out of `torchaudio.prototype.functional` and into `torchaudio.functional`.

Pull Request resolved: https://github.com/pytorch/audio/pull/3001

Reviewed By: mthrok

Differential Revision: D42688971

Pulled By: hwangjeff

fbshipit-source-id: 43280bd3ffeccddae57f1092ac45afb64dd426cc