[Freeswitch-users] Is there Sampling rate conversion CPU penalty?

jungle Boogie jungleboogie0 at gmail.com
Fri Jul 28 21:53:05 UTC 2017


On 28 July 2017 at 13:00, Anthony Minessale <anthony.minessale at gmail.com> wrote:
>
> Pro tip:
>
> If the file path is /var/sounds/example.wav
>
> you can create
>
> /var/sounds/8000/example.wav
> /var/sounds/16000/example.wav
> /var/sounds/32000/example.wav
> /var/sounds/48000/example.wav
>
> And it will auto-select the correct one that matches the sample rate of that call.
>
>

Yes, a great tip!

Also, you might need to normalize the audio. Michael pointed me in the
right direction on this earlier in the week and it made a big
difference on some of my audio files.

This is this script freeswitch uses for MOH and the audio files:
https://freeswitch.org/stash/projects/FS/repos/freeswitch-sounds/browse/dist.pl

Check out these lines:
https://freeswitch.org/stash/projects/FS/repos/freeswitch-sounds/browse/dist.pl#82
https://freeswitch.org/stash/projects/FS/repos/freeswitch-sounds/browse/dist.pl#112



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