On 18-01-12 04:57, Roi Stork wrote:
Hi,
I wasn't aware of the difference in quality between landline and
mobile phones, or that cellphones use a low bit rate.
I did a test again, landline voice quality is better.
From what you observed, how much drop in quality do I expect when
switching from ulaw to g729 for a normal mobile-to-mobile call?
Afaik mobile to mobile uses the gsm codec (in gsm country, no idea about
cdma etc.). IMHO gsm is not bad but certainly not as good as ulaw/alaw.
Read up on MOS:
https://en.wikipedia.org/wiki/Mean_opinion_score
Regards,
Patrick
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