Dear Friends:
I would like any could help me whit this subject, because I am turning crazy!
In the bytes per packet formula, it says: bytesperpacket=(samplesize(s)*bandwith_codec(bps))/8.
For example, with codec G.729 (8000 bps), the result will be: (0.02s*8000)/8=20 bpp.
I don't understand this formula, and I believe that I have reasons for this:
If the sample has 20 ms (0.02 ms), and the bandwith of the codec is 8000 bps, I would take one sample every 20 ms, so, in one second, I would have 50 samples.
The codec has 8 bits for every sample, so for 50 samples, it would have 50*8=400 bits per packet, and if I divide it by 8 (absurd...) I have 50 bytes per packet, don't 20...
I believe I am having a fix between the cuantization and the compression, but I don't have clean the rol of the codec working in bps, I would understand better if it works saying how many bits compress the packet.
Thank you everybody.
Sorry my ignorance, but I am new in the voice world...
Greetings.
Jaime.
