Method and apparatus for encoding, decoding and compression of a

Details Method and apparatus for encoding, decoding and compression of a Method and apparatus for encoding, decoding and compression of a

1995-02-23

1997-04-29

MacDonald, Allen R.

G10L 302, G10L 900

Patent

active

056257465

ABSTRACT:
An audio-type signal is encoded. The signal is first divided into bands. For each band, a yardstick signal element is selected. Its magnitude is quantized using a first level of accuracy. This magnitude is used for various purposes, including assigning bits to the different bands, and for establishing reconstruction levels within a band. The magnitude of non-yardstick signal elements is quantized with less accuracy than are the yardstick signal elements. The encoded signal is also decoded. Apparatus for both encoding and decoding are also disclosed. The location of the yardstick element within its band may also be recorded and encoded, and used for efficiently allocating bits to non-yardstick signal elements.

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