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|31st December 2017, 10:44 PM||#11|
Join Date: Jun 2003
Location: Hamilton, was Ottawa
22. What is the “Midnight Mode” on my new Dolby Digital A/V receiver?
Dolby Digital soundtracks can have a very wide dynamic range between soft and loud sounds. At a full playback level, this can be thrilling, providing a truly theatrical experience, particularly for movies. Late at night, however, the loud sound effects found on some movie soundtracks could disturb your family or neighbors. But if you turn down the volume to “keep the peace,” the dialogue will be hard to hear, and subtle low-level effects may get lost altogether.
What you’d really like to do is turn down the volume on just the loud effects, turn up the volume on quiet sounds, and keep the
dialogue at the same level. This is exactly what Dolby Digital’s Dynamic Range Control feature does. To help explain its function,
manufacturers of Dolby Digital decoders have come up with names like “Midnight Mode” for this feature (see Figure 12).
The amount of compression is not arbitrary, but is decided in advance by the soundtrack’s producers, and coded right onto the soundtrack. Some Dolby Digital decoders let you select various amounts of the available compression (e.g., 50%, 75%, 100%), while others provide only 100% when the compression mode is selected.
DD midnight mode.png
But what about DTS, AVI ...
Last edited by AudioLapDance; 31st December 2017 at 10:50 PM.
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