[Asterisk-Dev] Handling AST_FORMAT_SLINEAR at 48000Hz

[voipwala hindustani]

Hi kevin,
Thanks for your response.

If I need to add the functionality to handle some sampling rate other than
8000Hz, what are the things I need to change in asterisk. At the end I can
submit my code chanegs to Asterisk itself.

Or are there any other libraries which can convert linear data with sampling
rate 48000 to 8000 Hz. I did do googling but didnt get any good references.

With your next point I need to clarify my question, what I meant by the
following lines is,

>> is there any other way to send my AFMT_S16_LE at 48KHz over ulaw from
>> asterisk ?

>Not at this time. The receiving device wouldn't know what to do with it
>anyway, if you are using a standard SIP phone.

is there a way to convert my AFMT_S16_LE (at 48KHz) --- > to ulaw ---- and
then send this ulaw to the sip phone . In this case the standard sip phone
can understand ulaw. But how do I do my conversion in Asterisk ?

Thanks,
voipwala

On 11/17/05, Kevin P. Fleming <kpfleming at digium.com> wrote:
>
> voipwala hindustani wrote:
>
> > Is there any native format for my channel with will take care of this.
> some
> > format like signed 16 bit little endian but at 48000 Hz ?
>
> No. This is not a different format, it's a different sample rate.
> Asterisk currently does not have any support for sample rates other than
> 8,000 per second.
>
> > is there any other way to send my AFMT_S16_LE at 48KHz over ulaw from
> > asterisk ?
>
> Not at this time. The receiving device wouldn't know what to do with it
> anyway, if you are using a standard SIP phone.
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