of human hearing - 20 kHz. Newer formats such as FLAC, ALAC, DVD-Audio and Super Audio Compact Disc (SACD) allow for higher sampling rates.

CD audio signals are encoded as 16-bit values for each sample. Higher-definition consumer formats such as HDCD-encoded CDs, DVD-Audio, and SA-CD contain 20-bit, 24-bit and 32-bit audio streams. With a greater number of bits