Apparatus for erasing and reproducing audio signals

Details Apparatus for erasing and reproducing audio signals Apparatus for erasing and reproducing audio signals

1980-06-23

1983-03-08

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

G11B 547

Patent

active

043762921

ABSTRACT:
A passage of a previously recorded audio signal is erased from a magnetic tape such that a substantially linear decrease or increase of the sound level is perceived by the operator when the signal is reproduced by a reproducing head. The erase current is increased as a function of time from a minimum to a maximum amplitude, sequentially, through three ranges, and decreased in reverse order. The slopes of current versus time within the first and third ranges have a value substantially greater than the slope within the second range.

REFERENCES:
patent: 2962560 (1960-11-01), Folse
patent: 3038036 (1962-06-01), Young et al.
patent: 3156784 (1964-11-01), Kump

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