Modified Discrete Cosine Transform

Modified Discrete Cosine Transform (MDCT) is a mathematical transform used in signal processing, commonly for audio coding. Its primary application is audio compression.

It is a variant of the Discrete Cosine Transform (DCT) widely used for compressing audio signals. The MDCT is effective for transient signals and is known for its ability to reduce spectral leakage, where information from one frequency component leaks into another.

MDCT's overlapping window function distinguishes it from traditional DCT, allowing for better time resolution and reduced artifacts at the boundaries of each audio block.