has a narrow band (NB, 300 - 3400 Hz), used up by voice ... 1. Original wide-band (16-bit linear, Fs = 16 kHz) 2. Narrow-band, up to 3.4 kHz (8-bit m-law, Fs = 8 kHz) ...
Consistency. Single mechanism for database ... New sources and sinks can be added at any time without affecting user code ... Access to auxiliary information ...