Methods and apparatus for encoding and decoding signals, methods

Details Methods and apparatus for encoding and decoding signals, methods Methods and apparatus for encoding and decoding signals, methods

1995-04-19

1998-05-26

MacDonald, Allen R.

397717, 397738, C10L 900

Patent

active

057580200

ABSTRACT:
A method for encoding the information has a forward inverse transform step of forward orthogonal transforming an input signal using a pre-set windowing function to form an output spectral signal, and an encoding step of encoding the resulting output spectral signal from the forward orthogonal transform. The preset windowing function having a smaller slope of a characteristic curve at both skirt ends is employed. This allows efficient encoding when employing a transform constituting a waveform signal by overlapping waveform elements with both neighboring waveform elements for generating a waveform signal during inverse orthogonal transform, such as MDCT.

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