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Pulse-Code-Modulation Recording System

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A pulse-code-modulation tape recorder for eight channels of audio information is described. The sampling rate for each channel is 47.25 kHz, and the channel samples are interleaved in 13-bit code plus parity and phase check bits for each, with three eight-channel blocks in a television-signal horizontal-scanning-line format. A studio-quality video tape recorder is used. Engineering quality considerations are explained and performance data are given. Applications to the mastering of disc records of unprecedented fidelity are indicated.

JAES Volume 21 Issue 7 pp. 535-541; September 1973
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AES - Audio Engineering Society