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I need to speed the listening task. I want to listen only 1 second every three seconds. Could you give me some advice? Many thanks! Best regards, Sergio

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  • $\begingroup$ so you want time-compression where you speed it up by a factor of 3 without changing pitch? $\endgroup$ – robert bristow-johnson Sep 2 '19 at 9:19
  • $\begingroup$ No, Robert. I do not want to speed the play. The play of the audio has to be as the original mp3 file. Vice versa I want to listen 1 second every 4 so I can have only a rough idea of the audio content. I'm thinking to a script that processes the mp3 file sampling just slices with a configurable time window length. Thank you for your help $\endgroup$ – Sergio Sep 2 '19 at 12:12
  • $\begingroup$ This can be easily done in numerical computing packages such as Octave, SciPy, Matlab, etc. Load the mp3 into an array; slice the array to your liking; save the sliced array as a new mp3. $\endgroup$ – MBaz Sep 2 '19 at 16:29
  • $\begingroup$ Yes, MBaz. I'm now reconsidering Octave, which I discarded thinking it was applicable but with too high difficulty. Thank you for mentoring me. $\endgroup$ – Sergio Sep 3 '19 at 7:41
  • $\begingroup$ Abstract: I need to make a script that slices an MP3 file, extracts those slices and recomposes them in a shorter MP3 file. Have you already carried out a similar task? Is a tutorial available? If so, where can I find it? Please let me know if my question is unclear to you. $\endgroup$ – Sergio Sep 7 '19 at 20:53

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