Years ago, pre-computer days, I was into some speech transcription work
using a device that played back recorded speech, but the playback sound
was stretched out somehow in time, without distortion.
This with an option to replay phrases, was *very* useful.
Now is about 25 years later. Is any such playback resource available
for Linux? ??
Thanks -- Martha Adams [Fri 2018 Apr 06]
Besides sox, meantioned in this thread, a good GUI program is audacity
(available on Slackbuilds.org). Besides changing playback speed, you can
also apply noise reduction etc to make the audio easier to hear. I do
this with voicemails when I can't quite make make out what is being said
(old I guess...).
You can also explore voice-to-text (speech recognition). Choices for
Linux though are still a bit slim. Slackbuild.org has simon, julius that
might be worth exploring.