AUDIO CODING SYSTEM USING SPECTRAL HOLE FILLING

摘要

Audio coding processes like quantization can cause spectral components
of an encoded audio signal to be set to zero, creating spectral holes in the
signal.
These spectral holes can degrade the perceived quality of audio signals that
are
reproduced by audio coding systems. An improved decoder avoids or reduces the
degradation by filling the spectral holes with synthesized spectral
components. An
improved encoder may also be used to realize further improvements in the
decoder.