Variable speed digital signal reproducing apparatus

Dynamic magnetic information storage or retrieval – Record editing

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360 103, 360 351, 360 7305, H04N 5783

Patent

active

054145686

ABSTRACT:
A variable speed digital signal reproducing apparatus, particularly related to low speed reproduction of a digital signals recorded in a recording medium. The apparatus includes a unit for determining whether a reproduction PCM signal is renewed or not. Based on the renewal determination, PCM data of one frame is stored in a memory and the PCM data is read at a frequency rate corresponding to a tape reproducing speed at that time. Furthermore an interpolating device operates on the read PCM data to produce a PCM signal having the same frequency with which the PCM signal was read from the memory means.

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H. Matsushima, et al. "Digital Audio System for Professional Use", National Technical Report, vol. 26, No. 6, Dec. 1980, pp. 916-948.

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