Lexicon PCM96 SUR-D [22/64] Dsp configurations

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

; those configurations are accessible

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

supported only up to OS X 10.6. Control Only is supported for all versions.

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)

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.