Play and encode audio in reverse?

Question

Using tools available to Trusty Tahr how can I play audio files in reverse (play them backwards)? I would also like to know of tools that will allow me to save or create such reversed audio files...

score 5 · Accepted Answer · edited May 26 '24 at 15:07

5

From GUI with Audacity

Reversing audio can be done in Audacity using Effect > Reverse. After reversing we can choose to just playback or to export in any codec supported.

From CLI with Sox

On the command line we can reverse audio with sox's option reverse:

sox input.wav output.wav reverse ## for conversion
play input.wav output.wav reverse ## for playback

edited May 26 '24 at 15:07

Matthias Braun

1,187

answered Apr 11 '16 at 07:21

Takkat

144,810

Thank you for this which deals with encoding. For 'reverse playback' of unmodified I have only seen so far playback from within Audacity itself (after the Reverse effect is used) and the play utility of sox which will work as: play input.wav reverse. Feel free to add these and any others you know of to your answer... There must be more! – andrew.46 Apr 11 '16 at 08:23

score 1 · Answer 2 · answered May 25 '24 at 16:06

1

With FFmpeg

ffmpeg -i input.mp3 -af areverse reversed.mp3

-af means "audio filter".

answered May 25 '24 at 16:06

Matthias Braun

1,187

Play and encode audio in reverse?

2 Answers2

From GUI with Audacity

From CLI with Sox

With FFmpeg