These days, the source coding process will usually implement an algorithm
to realize bit or symbol content compression in addition to the standard process of
quantization and A/D conversion. Standard image compression algorithms are the MPEG and JPEG formats for moving and
static images respectively. At the present time, the source coding for music and speech is
not so well standardized, with many different formats in use throughout the world.
In most, but not all cases, a complementary decoder is implemented to restore the signal
to near or exactly its original format. |