Method and apparatus for substituting a higher quality audio sou

Details Method and apparatus for substituting a higher quality audio sou Method and apparatus for substituting a higher quality audio sou

1986-09-12

1988-07-19

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 13, G11B 1512, G11B 2702

Patent

active

047589086

ABSTRACT:
For use with master reproducing apparatus which reproduces a visual signal and a corresponding first audio signal, apparatus for substituting a second higher quality audio signal reproduced by slave reproducing apparatus for the first audio signal during reproduction of the visual signal and the first audio signal, includes a synchronizer detector for detecting the amount of synchronization between the first and second audio signals in response to the first and second audio signals and for producing an error signal corresponding thereto; a controller for controlling the slave reproducing apparatus in response to the error signal, to bring the first and second audio signals into synchronization; and a switch for switching the first audio signal to a sound system when the first and second audio signals are out of synchronization, and for switching the second audio signal to the sound system when the first and second audio signals are in synchronization, in response to the controller, whereby the higher quality second audio signal is substituted for the first audio signal when synchronization is achieved between the second audio signal and the first audio signal.

REFERENCES:
patent: 4357636 (1982-11-01), Takeromi et al.

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