Method of transmitting or storing sound signals in digital form

Details Method of transmitting or storing sound signals in digital form Method of transmitting or storing sound signals in digital form

1990-05-09

1992-02-18

Pellinen, A. D.

Coded data generation or conversion

Digital code to digital code converters

To or from differential codes

341 51, 364485, 375 27, H03M 300

Patent

active

050898183

ABSTRACT:
A sound signal coding method and installation are disclosed, which method, usable particularly for transmitting or storing high quality audio signals in digital form, involves chopping the sound signal into blocks of samples and subjecting the samples of each block to time-frequency transform coding whose coefficients are transmitted in digital form, the reverse operations taking place at reception. At least the most significant coefficients of the transform of each block are subjected to predictive and adaptive coding using the stationary state of the signal over a duration greater than that of a block.

REFERENCES:
patent: 4594687 (1986-06-01), Kaneko et al.
patent: 4680797 (1987-07-01), Benke
patent: 4932062 (1990-06-01), Hamilton

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