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  • Title: Data recording and playback on video tape--a multi-channel analog interface for a digital audio processor system.
    Author: Blaettler M, Bruegger A, Forster IC, Lehareinger Y.
    Journal: J Neurosci Methods; 1988 Mar; 23(2):139-48. PubMed ID: 3357354.
    Abstract:
    The design of an analog interface to a digital audio signal processor (DASP)-video cassette recorder (VCR) system is described. The complete system represents a low-cost alternative to both FM instrumentation tape recorders and multi-channel chart recorders. The interface or DASP input-output unit described in this paper enables the recording and playback of up to 12 analog channels with a maximum of 12 bit resolution and a bandwidth of 2 kHz per channel. Internal control and timing in the recording component of the interface is performed using ROMs which can be reprogrammed to suit different analog-to-digital converter hardware. Improvement in the bandwidth specifications is possible by connecting channels in parallel. A parallel 16 bit data output port is provided for direct transfer of the digitized data to a computer.
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