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CP-1 Digital Audio Environment Processor | Indicatorsand | |
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All of the programs in the Lexicon CP-1 Digital Audio Environment | Introduction | | |
Processor have a common goal: to draw you, the listener, more deeply into | | | |
a musical performance or a film. For music the CP-1 uses unique digital processing to re-create either the original recording space or a new one of your choosing. For films it offers an extremely accurate version of Dolby Pro Logic Surround decoding and our own decoding for monaural film sound- tracks. The increase in impact of a musical performance or film when heard with the CP-1 is enormous, especially when widely spaced multiple loud- speakers are provided, but even without additional loudspeakers signifi- cant gains are made.
To re-create the experience of being at a performance the CP-1 draws on recent studies of concert-hall acoustics, and applies this research to home listening rooms. The object is to increase the sideways-moving sound in a room, thus increasing Spatial Impression, or SI.
The CP-1 increases SI by either extracting it from the original recording, using the Panorama or Surround programs, or by generating a new acoustic environment with Ambience or Reverb.
When a listener is in the correct spot the Panorama program provides an almost ideal re-creation of the original recording space. It works by using digital processing to cancel the crosstalk between the listener's ears, effec- tively spreading the sound from the two front loudspeakers in a wide arc in front of the listener. With the optional addition of rear speakers, Panorama can be almost spooky in its realism.
The CP-1 Reverb and Ambience programs provide signals for driving widely spaced side and rear loudspeakers, directly exciting sideways sound and heightening the listener impact over a large listening area. (When there are no side speakers, Panorama is used to increase the side- ways sound from the main speakers.)
The Ambience and Reverberation programs transform the listening room into a new acoustic space, letting you choose an environment which matches your music or your mood. Unlike some previous hall simulators, the CP-1 provides full stereo processing. The Ambience program generates the side and rear reflection patterns of idealized rooms and concert halls. The larger spaces add the true depth and realism of a concert hall to classical and popular music, while the smaller spaces are ideal for jazz and rock. The Reverberation program is similar, but places more emphasis on rich, dense reverberant decay than on early reflections. It is especially good for simulating large, highly reverberant spaces.
For films encoded with Dolby Stereo, Lexicon has incorporated into the CP-1 the first completely digital Dolby Pro Logic Surround decoder, and the only one with automatic correction of azimuth and channel-balance errors (the most common problems in currently available films). The CP-1 also provides a program for playing music through a Surround speaker set-up (Stereo Logic), and a program for expanding monaural film sound tracks (Mono Logic).
