High-resolution audio

High-resolution audio (high-definition audio or HD audio) is a term for audio files with greater than 44.1 kHz sample rate or higher than 16-bit audio bit depth. It commonly refers to 96 or 192 kHz sample rates. However, 44.1 kHz/24-bit, 48 kHz/24-bit and 88.2 kHz/24-bit recordings also exist that are labeled HD Audio.

"High definition audio" redirects here. For the Intel specification for personal computer audio, see Intel High Definition Audio.

Research into high-resolution audio began in the late 1980s and high-resolution audio content started to become available on the consumer market in 1996.

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