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Digital Audio Essentials by Bruce Fries, Marty Fries

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High-Resolution Formats

This section discusses two high-resolution audio formats that are becoming more common. You’ll need an extremely good stereo or home theater system and good hearing to appreciate the improved sound quality of these formats.

DVD-Audio

DVD-Audio is a standard for high-resolution, multi-channel audio that can use either PCM or MLP formats. MLP lets you fit more audio on each disc without reducing the quality. DVD-Audio is a part of the DVD standard and is closely associated with DVD-Video.

DVD-Audio discs can contain related content, such as video and still photos, along with lyrics, liner notes, animation, and text. On a DVD-Audio disc, high-resolution audio is stored in the \AUDIO-TS directory, and DVD-Video is stored in the \VIDEO-TS directory. Figure 9-3 illustrates the standard directory structure for DVD-Audio discs.

DVD-Audio directory structure

Figure 9-3. DVD-Audio directory structure

Any video on the discs must adhere to the standard for DVD-Video. DVD-Audio and DVD-Video can use several audio formats, with a range of sampling rates, resolutions, and number of channels. Table 9-4 shows the options for DVD-Audio and DVD-Video.

Table 9-5. DVD-Audio and DVD-Video options

Parameter

DVD-Audio

DVD-Video

Audio format

PCM or MLP

PCM or Dolby Digital.

Sampling rates (kHz)

44.1, 48, 88.2, 96, 176.4, or 192

48 or 96

Resolution (bits)

16, 20, or 24

16, 20, or 24

Maximum channels

6 @ ...

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