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Thank you. You're right ... my error ... I meant to say 12 <b>bytes
</b>(<u>including</u> the 2 bytes for VAD). And it is 10ms/frame. No
matter ... thank you for the SPEEX specs. In terms of quality, what SPEEX
bit rate compares with G.729 at 8kbps data rate please? Is there some
reason why you chose the 20ms frame rate? Do you keep that same frame
rate for the different bit rates? The faster frame rate would seem to
better adapt to multiple speakers cutting in and out ... yes/no?<br><br>
Btw, 6 bytes/frame at 50 frames/second seems to be 2.4kbps so I'm
guessing that the lower rate you mentioned is because of some overhead
for VAD in your 6 bytes.<br><br>
At 07:11 PM 5/3/2007 +1000, Jean-Marc Valin wrote:<br>
<blockquote type=cite class=cite cite="">B. Mitchell Loebel a écrit
:<br>
> How many bits do you have in a frame please and what is your frame
rate?<br>
> For example, G.729 (ACELP) has 12 bits/frame including VAD and the
frame<br>
> rate is 100/second ... I'm looking for the comparable figures for
SPEEX.<br><br>
I'm sorry but if G.729 used 12 bits/frame at 100 frames/second, it
would<br>
have a bit-rate of 1.2 kbps. G.729 actually uses 10 *bytes* (i.e. 80<br>
bits) per frame. Speex has 20 ms frames (50 frames per second) and<br>
supports bit-rates that range from 2.15 kbps (6 bytes per frame) to
44<br>
kbps (110 bytes per frame).<br><br>
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Jean-Marc</blockquote>
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<br>
---<br>
B. Mitchell Loebel, CEO, VP
Engineering
408 425-9920<br>
InstaFlash International Corporation<br>
(formerly Minute-Tape International Corporation)<br>
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