Digital Audio Tape

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The technology for the style or medium itself is derived from the 4 mm tape and video recorders, the rotary head and cassette configuration is quite the same with the 8 mm video cassette from Sony a little bit smaller than usual. The format never gained any fame and popularity in it’s intended market for a variety of valid reasons but quickly became benchmark standard for use in amateur and professional recording environments despite their being a number of issues with the format it self that should have prevented it being used there.

The Sony PCM-R300 is a nice and very low cost Digital Audio Tape recorder offering unbalanced RCA analog outputs and inputs, and unbalanced coaxial and optical digital input and output, a simple user setup menu system, adjustable ID6 mode (SCMS). Specific Features and details: SBM Recording Function, signal to noise ratio equivalent to 20-bit system, Setup menu control, Coaxial and optical digital interface, Error rate display, Long Play mode – record and playback , Start ID, End ID, Skip ID front panel control, A/D and D/A monitoring

The Digital Audio Tape format uses 16-bit format recording. The signal from the analog to digital converters is processed by the certain and unique Sony SBM (Super Bit Mapping) circuitry that uses highly advanced noise shaping techniques to achieve a dynamic wide range of a 20-bit signal with only 16 bits. This advantage is preserved and made digitally, so a Digital Audio Tape recording made on an SBM-equipped machine produces a clearer and high quality sound on a subsequent Compact Disk master.


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