Dsp Presets - Meridian 568.2 User Manual

DSP presets

The digital surround processor provides an extremely
comprehensive range of digital signal processing options for
decoding both analogue and digital audio signals and
processing them for multi-channel reproduction. These are
referred to as DSP presets, and are designed to provide the best
results with a range of different types of music and film material.
In addition to selecting built-in DSP presets, the digital surround
processor allows you to create your own presets based on the
standard ones. For example, you may want to add more delay to
the rear speakers to create a more spacious sound. You can
store your modified preset with a name of your choice, and
recall it for use at a later date.
This section gives information about each of the built-in DSP
presets, and gives recommendations for the best preset to
choose for different types of material.
Discrete multi-channel sources
Some DVD-Audio discs provide up to six discrete channels, and
when used with a suitable DVD-Audio player such as the
Meridian 598 DVD Player, these channels can be connected
separately to the 568.2 for subsequent processing.
Ambisonics B format
Ambisonics B format contains four independent channels of
information to give a three-axis representation of the sound at
the recording position. The signals are: mono sound pressure,
left-right velocity component, front-back velocity component,
and up-down velocity component.
Multi-channel digital sources
Several alternative multi-channel digital formats are currently
available which encode up to six different channels onto a digital
signal. Three alternatives are currently in use: Dolby Digital, DTS,
and MPEG Surround. However, the 568.2 has been designed so
that it can be upgraded by downloading a software update, to
cater for new formats as they are introduced.
Dolby Digital
Dolby Digital, previously called AC-3, is the preferred sound
format for DVD in NTSC territories, and is widely used on
LaserDisc soundtracks. It is also the audio standard for US
digital television.
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