[Speex-dev] frame size for a given quality?

[Jeff Ramin]

Thanks Steve.

Is there a document anywhere that shows how many bytes/bits of data
are produced by the speex encoding process for a given amount of time
sampling rate and quality setting?


On 11/01/2010 09:41 AM, Steve Kann wrote:
> Jeff,
>
>   RFC-5574 is standards-track:  http://tools.ietf.org/html/rfc5574  so,
> while it's not an approved standard, it's more standardized than a lot of
> interoperable traffic on the internets these days.
>
>   The RFC specifies packetization guidelines, which is basically that you
> put one or more frames in a packet, and then pad the rest with 0 bits
> until you have a while number of octets.
>
> -SteveK
>
>
>
> On 11/1/10 9:55 AM, "Jeff Ramin"<jeff.ramin at singlewire.com>  wrote:
>
>> I need to stream speex-encoded audio over RTP, which doesn't seem
>> to be standardized yet, so I'm gonna roll my own code. I control both the
>> sending and receiving sides, so I can pretty much do what I want.
>>
>> I want each packet to contain 20ms worth of audio (sampled at 8KHz),
>> and I'm encoding using a constant bit rate and quality:6.
>>
>> Q: how do I determine how many bytes of data go into each packet? I'm
>> putting one frame (20 ms) into each packet.
>>
>> Thanks!
>>
>> -- 
>> Jeff Ramin
>> Software Engineer
>> Singlewire Software
>> 2601 W Beltline Hwy #510
>> Madison, WI 53713
>>
>> Phone Direct - 608.661.1172
>> www.singlewire.com
>>
>> _______________________________________________
>> Speex-dev mailing list
>> Speex-dev at xiph.org
>> http://lists.xiph.org/mailman/listinfo/speex-dev
>


-- 
Jeff Ramin
Software Engineer
Singlewire Software
2601 W Beltline Hwy #510
Madison, WI 53713

Phone Direct - 608.661.1172
www.singlewire.com