Frequency converter system

Details Frequency converter system Frequency converter system

1998-06-29

2000-08-01

Isen, Forester W.

Data processing: speech signal processing, linguistics, language

Audio signal time compression or expansion

704211, G10L 2100

Patent

active

06098046&

ABSTRACT:
An apparatus and method is disclosed for converting an input signal having frequency related information sustained over a first duration of time into an output signal sustained over a second duration of time at substantially the same first frequency by adding or subtracting to the effective wave length of the output signal. Preferably, the signals are converted in digital form with samples added or subtracted to frequency convert the signal.

REFERENCES:
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patent: 3681756 (1972-08-01), Burkhard et al.
patent: 3786195 (1974-01-01), Schiffman
patent: 3816664 (1974-06-01), Koch
patent: 4435832 (1984-03-01), Asada et al.
patent: 4586191 (1986-04-01), Nishimura
patent: 4851909 (1989-07-01), Noske et al.
patent: 5073938 (1991-12-01), Galand
patent: 5386493 (1995-01-01), Degen et al.

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