[Asterisk-Users] Recording Prompts

[Tilghman Lesher]

On Friday 11 April 2003 20:51, Omar Abhari wrote:
> Tilghman Lesher wrote:
> >On Friday 11 April 2003 07:09 pm, Omar Abhari wrote:
> >> From everyone's experience, what is the best way to record
> >>prompts?
> >>
> >>Last night, we recorded some wav files using a windows
> >> machines, and after conversion to gsm and wav for asterisk
> >> on our redhat box, the quality simply sucked. we used "sox"
> >> to do the conversion..
> >>
> >>any tips on achieving a better quality?
> >
> >I typically use:
> >
> >sox -r 22050 file.wav -r 8000 file.gsm
> >
> >What were the parameters that you were using to convert the
> > WAV to gsm?  Have you confirmed that the file was recorded
> > free of noise on your Windows machines?
> 
> I used:
> sox in.wav -r 8000 -c 1 out.gsm
>
> your conversion method made my voice sound like the dude from
> predator! [very very slow!]

That sounds like you're not using the default wavefile.  If you
record in the following format:  PCM, 22.050 KHz, 8 bit, mono,
everything should sound fine after the conversion to gsm.

-Tilghman