HIGH-PERFORMANCE DIGITAL AUDIO RECORDER.

The 3M digital audio recorder is designed specifically for the professional recording studio market and uses digital signal processing instead of the traditional along circuitry. The normal record preequalization, bias, and record drive circuitry are replaced with an antialiasing filter, an A/D converter, and a record encoder. The traditional reproduce electronics consisting of a preamplifier, equalizers (to correct for head response), and an output amplifier has been replaced with a bit sync, a play decoder, an error corrector, and a D/A converter.