Dsp configurations – Lexicon PCM96 User Manual

Page 22

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16

dSP coNFIGURAtIoNS

The PCM96 Surround processor can be divided in up to four virtual
machines, each of which can run its own algorithm. This lets you route sig-
nals from each input through a variety of algorithm combinations.

The PCM96 Surround can use up to six physical inputs and six physical
outputs at a time; configurations for the physical inputs and outputs are
described below. The software plug-in also lets the PCM96 Surround use up
to six inputs and outputs via FireWire

TM

; those configurations are accessible

in the software plug-in, and are described on page 18.

When using the PCM96 Surround in one of its surround modes, it is critical
to know how audio is routed to the algorithm. This applies both to the way
IO connects with the outside world and the way the signals are distributed
within the algorithm.

The inputs and outputs relate to the following cables:

Analog

AES

Stereo Machine 1 Left

Cable 1

Cable 1 (L)

Stereo Machine 1 Right

Cable 2

Cable 1 (R)

Stereo Machine 2 Left

Cable 3

Cable 2 (L)

Stereo Machine 2 Right

Cable 4

Cable 2 (R)


Or

Analog

AES

Multichannel Left

Cable 1

Cable 1 (L)

Multichannel Right

Cable 2

Cable 1 (R)

Multichannel Left Surround

Cable 3

Cable 2 (L)

Multichannel Right Surround Cable 4

Cable 2 (R)

Multichannel Center

Cable 5

Cable 3 (L)

Multichannel LFE

Cable 6

Cable 3 (R)

PReSet AVAILAbILIty WIthIN the VARIoUS SURRoUNd coN-

FIGURAtIoNS

In almost all cases, a surround preset is usable in any surround configuration,
whether four or five-channel, 2-in or multi-in. Parameters which are not
available in a given configuration (for example center levels in a four-channel
config) are hidden. Factory presets have been written in such a way as to
work satisfactorily in all configurations. When creating user presets, it’s rec-
ommended that the preset be auditioned in all configurations.

SIGNAL dIStRIbUtIoN INSIde the ALGoRIthM

There are two versions of the 4-channel machine: 2-in/4-out and 4-in/4-out.
By the same token, there are two versions of the 5-channel machine: 2-in/5-
out and 5-in/5-out.

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