Acoustic signal coding method and apparatus, acoustic signal...

Details Acoustic signal coding method and apparatus, acoustic signal... Acoustic signal coding method and apparatus, acoustic signal...

1999-10-05

2009-08-25

Hewitt, II, Calvin Loyd (Department: 3685)

Data processing: financial, business practice, management, or co

Business processing using cryptography

Usage protection of distributed data files

C705S050000, C705S052000, C705S053000, C705S054000, C705S055000, C705S056000, C705S057000, C705S058000, C705S059000, C704S203000, C704S207000, C704S211000

Reexamination Certificate

active

07580893

ABSTRACT:
Acoustic signal encoder is provided which comprises a subband filter band to divide an original signal into a plurality of frequency bands, a spectrum transformation circuit to detect the amplitude of a signal in each of the plurality of frequency bands in each of sub-blocks resulted by division of a block length for signal coding, process the signal amplitude in each band based on the detected amplitude and transform the signals divided in the frequency bans to spectra, a normalizing circuit and quantizing circuit to normalize and quantize the spectrum, respectively, and a code row generator to generate a code row from the signals processed by the above circuits.

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U.S. Appl. No. 09/013,492, filed Jan. 26, 1998.

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