Digital compressed sound recorder

Details Digital compressed sound recorder Digital compressed sound recorder

1995-08-29

1997-10-07

Gaffin, Jeffrey A.

Coded data generation or conversion

Digital code to digital code converters

Unnecessary data suppression

360 12, 379 88, H04B 1404

Patent

active

056753330

ABSTRACT:
For saving memory space, the use of a sophisticated compressor is to be preferred to a simple reduction of the sampling frequency. However, for very high compression rates the total number of calculations is such that the compressor would no longer be capable of following the timing with which the samples arrive. Particularly in the case of a telephone/recorder where sound messages are received in separate call elements of limited duration, the invention consists of finally compressing once again samples that one has not been able to compress in real time at a sufficiently high compression rate.

REFERENCES:
patent: 5506872 (1996-04-01), Mohler

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