Zitat von A J Stiles <asterisk_l...@earthshod.co.uk>:
Hi,
GSM is the native codec used for calls to mobile phones; it uses lossy
compression to achieve a low bit rate.
A-law is the native codec used by physical exchanges on the land line network
(PSTN and ISDN). It is non-lossy. It works by arranging the "steps" closer
together near the zero line, and further apart away from it; so the
difference
between the actual signal and the nearest digital representation is small in
proportion to the signal.
Well, but for voice quality, which codec is better?
alaw or gsm?
Thanks
Luca Bertoncello
(lucab...@lucabert.de)
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