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Lesson 8. Hardware and Interfaces > Digital Audio Formats

Digital Audio Formats

It’s common to record separate sound on digital devices these days. Unlike analog audio, digital audio is self-clocking: digital audio by its nature contains synchronizing information, so that playback happens at the same precise speed as recording. Maintaining a common start mark between picture and sound remains an issue; unless the digital format includes timecode, you need a clapper or other start reference to match picture to sound.

DAT

Digital Audio Tape records 44.1 or 48 kHz, 16-bit uncompressed stereo audio on a 4mm tape cassette. Interface is via analog RCAs or XLRs, or by digital S/PDIF connections. DAT gives very clean audio assuming the microphones and preamps are of high quality.


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