Devices, systems, and methods for composite signal decoding

Details Devices, systems, and methods for composite signal decoding Devices, systems, and methods for composite signal decoding

1991-07-30

1993-08-24

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

331 25, 375 97, 375113, 329324, 329361, H04H 500

Patent

active

052395855

ABSTRACT:
Generally, and in one form of the invention, a composite signal decoder (60) is disclosed which does not require synchronizing the sampling rate to the phase of the incoming pilot signal. Curve fitting filter (126) up-samples and interpolates the incoming composite signal (A) using a bank of coefficient filters selected from filter coefficient bank storage (122) by Bank Selector (124). Bank selector (124) operates in response to a phase offset value produced by phase calculator (112). Because curve fitting filter (126) need not be synchronous with the incoming pilot signal, the output sample rate can be asynchronous from the input sample rate. Other devices, systems and methods are also disclosed.

REFERENCES:
patent: 4577334 (1986-03-01), Boer et al.
patent: 4723288 (1988-02-01), Borth et al.
patent: 4757538 (1988-07-01), Zink
patent: 4827515 (1989-05-01), Reich
patent: 5166641 (1992-11-01), Davis et al.

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