L'audio in alta definizione rappresenta la più innovativa frontiera dell'HD
. Nell'era dell'alta definizione, la qualità del CD non è infatti sufficiente per fruire un'esperienza sensoriale di livello.
||Fine for human speech (but loses sibilance) e.g. phones, wireless microphones etc.
||25% of the sample rate of audio CDs e.g. lower-quality PCM, MPEG audio and subwoofer bandpass audio analysis.
||50% of the sample rate of audio CDs e.g. lower-quality PCM, MPEG audio and for low frequency energy audio analysis.
||Used for miniDV digital video camcorders, video tapes with additional audio channels, NICAM digital audio, high-quality digital wireless microphones. DAT (LP mode) and Digitales Satellitenradio (German),
||PCM adaptor using NTSC video tapes (245 lines x 3 samples x 59.94 frames/sec),
||Used with MPEG-1 audio (VCD, SVCD, MP3) and audio CD, adopted from the PCM adaptor using PAL video tapes (588 lines x 3 samples x 25 frames/sec). Most professional audio equipment uses (or can select) 44.1 kHz sampling.
||The world's first commercial PCM sound recorder by Nippon Columbia
||Digital sound used for DVD, miniDV, digital TV and films. Most professional audio equipment uses (or can select) 48 kHz sampling.
||Digital audio recorders 3M and Soundstream (in the late 70s)
||Used by the Mitsubishi X-80 digital audio recorder
||Used by professional recording equipment for CD.
||DVD-Audio, BD-ROM (Blu-ray Disc) audio tracks. Some professional audio equipment uses (or can select) 96 kHz sampling.
||Used by professional recording equipment for CD
||DVD-Audio, BD-ROM (Blu-ray Disc) audio tracks, High-Definition audio recording devices and audio editing software
||SACD, 1-bit sigma-delta modulation process known as Direct Stream Digital, co-developed by Sony and Philips