What is the difference between G.711 A-law and u-law?
G.711 is the international standard for encoding voice at 64 kbps; and is typically used by Telcos for carrying phone calls between telephone exchanges. G.711 operating at 64 kbps is generally considered as the uncompressed reference against which the speech quality of lower bit rate algorithms are measured. G.711 is a pulse code modulation (PCM) scheme operating at an 8 kHz sample rate, with 8 bits per sample (hence 64kbps). You can select between two different variants of G.711: A-law and law. A-law is the standard for international circuits including Europe and much of APAC, while law is used in the United States.
