[Freeswitch-users] Optimum sound file format

[Anthony Minessale]

Looking at your post, You are already using the best format.
If you do not have a fast filesystem try making a ram disk and play the
files from there instead.

if you *really* want you can use sox to turn them all into raw alaw files
and rename them with a .PCMA extension
to avoid the g711 transconding but g711 to PCM is pretty trivial. it's more
likely a file i/o distress you see.


On Thu, Apr 16, 2009 at 5:04 PM, Nik Middleton <
nik.middleton at noblesolutions.co.uk> wrote:

>  Hi Guys,
>
>
>
> I’m looking for the optimum audio format when using streamfile in a lua
> script.
>
>
>
> I’ve found CPU load increases rapidly with the number of threads playing a
> .wav file.  Can anyone tell me the optimum when using g711a?
>
>
>
> Right now the the .wav files are
>
>
>
> Audio format: PCM
>
> Sample rate : 8 kHz
>
> Mono
>
> Sample Size: 16 bit
>
> Bit rate          :128kbps
>
>
>
> Will it help CPU load if I resample to a bit rate of 64kbps and sample size
> of 8 bit?
>
>
>
> I have read that the sample size needs to be 13-14bit  +1 for alaw/ulaw
> though
>
>
>
> Regards,
>
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-- 
Anthony Minessale II

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