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What is ATRAC?

April 26, 2017ATRAC

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What is ATRAC?

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ATRAC stands for Adaptive Transform Acoustic Coding. This eliminates the information in sounds that you cannot hear and compresses the rest of the data so the recording uses about 1/5 of the original sound information.

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ATRAC stands for Adaptive Transform Acoustic Coding. Atrac is a very intelligent compression method; it doesn’t just blindly toss out data. ATRAC attempts to follow the perceptual model of human hearing to determine what the human ear can and cannot hear. Anything determined to be inaudible or masked by other sounds is where the compression occurs. The end result: Audio that sounds (to the human ear) exactly like the original, but at 1/5 the original size. ATRAC is constantly being improved, and some even say that using the perceptual model will allow MD’s ATRAC compression to take advantage of the human hearing peculiarities and actually make MD sound better than other uncompressed formats.