The most common form of lossy compression is a transform coding method, the discrete cosine transform (DCT), which was first published by Nasir Ahmed, T. Natarajan and K. R. Rao in 1974. DCT is the most widely used form of lossy compression, for popular image compression formats (such as JPEG), video coding standards (such as MPEG and H.264/AVC) and audio compression formats (such as MP3 and AAC).
the most common form of lossy compression is a transform coding method the discrete cosine transform (dct) which was first published by nasir ahmed t natarajan and k r rao in 1974 dct is the most widely used form of lossy compression for popular image compression formats (such as jpeg) video coding standards (such as mpeg and h264/avc) and audio compression formats (such as mp3 and aac)