Bug: shift augmentation sometimes produces silent tensor

[janvainer]

Hi, I was playing with the augmentations in this repo and I am sometimes getting silent audio results with the Shift augmentation. It happens shorter audio files with duration around one second (16319 samples).

  Shift:
      min_shift: -0.1
      max_shift: 0.1
      shift_unit: "fraction"
      rollover: True
      mode: "per_example"
      p: 1

Are you able to reproduce this behavior for some short audio? I cannot provide the audio files, but can run more experiments if you wish.

[mogwai]

Was the sample rate 16000?

Was the waveform on a cuda device or cpu?

[iver56]

If this bug exists, it should be fixed. @janvainer if you can make a unit test or a small script that reliably reproduces the issue, that would be swell :)