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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.
The DVD format uses the 48 kHz sampling rate, and its doublings. In digital audio, 48,000 Hz (also represented as 48 kHz or DVD Quality) is a common sampling rate. It has become the standard for professional audio and video. 48 kHz is evenly divisible by 24, a common frame rate for media, such as film, unlike 44.1 kHz. [i]
channels at 48 kHz 41.6 μs [8] 96 kHz Q-LAN: 2009 IP over Gigabit Ethernet: Isochronous Coexists with other traffic using DiffServ QoS IP, HTTP, XML Any L2 or IP network IEEE 802.1, redundant link, IP routing Cat5=100 m, MM=550 m, SM=10 km 7 hops or 35 km Unlimited 1 ms 48 kHz RAVENNA: 2010 Any IP medium Isochronous
The 'Music' category is merely a guideline on commercialized uses of a particular format, not a technical assessment of its capabilities. For example, MP3 and AAC dominate the personal audio market in terms of market share, though many other formats are comparably well suited to fill this role from a purely technical standpoint.
24-bit and 32-bit audio does not require dithering, as the noise level of the digital converter is always louder than the required level of any dither that might be applied. 24-bit audio could theoretically encode 144 dB of dynamic range, and 32-bit audio can achieve 192 dB, but this is almost impossible to achieve in the real world, as even ...
The AES50 protocol supports 24-bit PCM audio and delta-sigma bistream formats (Direct Stream Digital), with sample rates that are a multiple of 44.1 or 48 kHz. The bandwidth of 100 Mbit/s allows 48 channels at 48 kHz sample rate, or 24 channels at 96 kHz sample rate. The latency is 6 samples at 96 kHz and 3 samples at 48 kHz, or 62.50 μs.
44.1 / 48 kHz 96 kHz 125 μs 6: 12 Compatible with AVB Class A 250 μs 12: 24 High-performance low-latency operation. Compatible with AVB Class B, interoperable with AVB Class A 333 + 1 ⁄ 3 μs 16: 32 Efficient low-latency operation 1 ms 48: 96 Required packet time for all devices 4 ms 192: 384
AC'97 defines a high-quality, 16- or 24-bit audio architecture with 5.1 surround sound support for the PC. AC'97 supports a 96 kHz sampling rate at 24-bit stereo resolution and a 48 kHz sampling rate at 24-bit stereo resolution for multichannel recording and playback.