I like to watch lectures on high speed (usually between 1.5x and 2x) with VLC. The limiting factor is often the rate at which the speech becomes unintelligibly clipped/choppy. Is there software that smooths out audio of human language in a way that allows for higher playback speed?

To be clear: I'm looking for something that intelligently modifies the audio beyond just a uniform speed up, e.g. compressing the pauses between words while stretching out the words themselves, or making consonant sounds "crisper", etc.

(I am interested in any operating system, but ideally this would be for OSX. Even more ideal would be a VLC plugin.)

  • Overcast is a podcast (audio, no video) player for iOS that apparently cuts out pauses in conversations: overcast.fm Commented Feb 10, 2016 at 3:28
  • PocketCast clips silences, but unfortunately it isn't very aggressive about it, probably because it would tend to mangle things unless done carefully. (I suspect it would require a lot more software sophistication with human speech to appreciably change the average playback speed.) It cut out less than a second over the first few minutes of a conversation I used as an example, so it essentially does nothing. Commented Feb 24, 2016 at 12:24
  • You could try uploading it to Youtube as a private video and use their player at higher speeds: quora.com/…
    – kat
    Commented Feb 23, 2021 at 21:25
  • Is YouTube editing the audio to make it more intelligible? As stated in the post, I am not just looking for a way to uniformly speed up the playback. Commented Feb 24, 2021 at 1:37
  • 1
    My new related question: softwarerecs.stackexchange.com/questions/85183/…
    – Ryan
    Commented Feb 3, 2023 at 21:10


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.