Shown below is a
video clip (QuickTime movie) of the closed lab.
Depending on your network connection, it may take a few seconds to a few
minutes to download this demo.
||The purpose of this exercise
is to have students observe the benefits of µ-law encoding. Students first take an audio file (a piece
of classical music) and reduce the bit-depth from 16 to 8 bits. They
then take the same 16-bit audio file and reduce it to 8 bits, but
this time using µ-law encoding. Through a logarithmic compression
algorithm, µ-law encoding gives the dynamic range of 12 bits
using only 8 bits per sample. The students can hear the better quality
sound on the µ-law encoded file as compared to the plain 8-bit