17 Aug 2004
CS 5244: Multimedia
36/44
Amplitude and Channels
¡Sampling at these time intervals to get amplitude of signal
la total of ~30-60 dB in loudness
lHuman ear more sensitive to soft sounds
lCompand amplitude
(________________________________________________________)
l1 or 2 bytes
¡For each time interval, may have to sample one or more channels
lDifferential coding (joint stereo)
lDolby AC 3 = ____ channels
lStereo = 2 channels