Ambience - Lexicon PCM 90 - REV 1 User Manual

PCM 90 User Guide Lexicon
While Random Hall effects are designed to add a cushion of reverberance to

Ambience

recorded music, while leaving the clarity of the direct sound unaffected,
Ambience is intended to become a part of the direct sound — to give it both better
blend and a definite position in space. Ambience gives warmth, spaciousness
and depth to a performance without coloring the direct sound at all.
This algorithm generates primarily the strong reflections which appear in the first
few hundred milliseconds of the reverberation process. These early reflections
constitute the primary audible effect, giving you the impression of a hall
surrounding you while the music is playing. To avoid any coloration from these
strong reflections, the time delays and amplitudes are random functions.
Ambience is very useful for adding a room sound to recorded music or speech.
It is particularly easy to match a studio recording of dialog to a typical room
environment. In music recording, it allows you to realistically add distance to a
close-miked signal. If an ensemble has been recorded with close-mikes and pan
pots, Ambience can provide the missing blend and depth. The apparent position
of the instruments is preserved in the reverb while the apparent distance is
increased. This algorithm is also useful in matching a closely miked accent
microphone to the overall ambience of a recording. This allows a soloist to be
increased in level without changing the apparent distance. Ambience can be
used in a recording situation any time a close-miked sound is undesireable.
To use the algorithm with a console, it is best to use a stereo send to the PCM
90, carefully matching the panning of the various close-miked sources to their
positions in the mix. Leave the Mix control at 100%. The apparent distance of
each source can be controlled by the level of its feed.
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