Lexicon 960L owner manual Ambient Chamber, Reverse & Surround Reverse, Inverse

Using The Reverb Program Lexicon, Inc.

Algorithms, Continued

Ambient Chamber

Ambient Chamber is a hybrid of the stereo Ambience and Chamber algorithms. It applies front left, center, and right signals to the ambience algorithm and front LCR plus rear signals to the chamber algorithm. This can be used to change the apparent microphone distance of the front signals or to provide different acoustics for the front and rear (e.g., a stage house in front and a more reverberant auditorium behind it) that join into one integrated reverberant field.

The advantage of Ambient Chamber over the Ambient Surround is that there is more control over the late reverberation, with the inclusion of the Shape, Spread, and BassMult controls. However the early reflections generated by Ambient Chamber are more limited. There are no early reflection generators for signals coming into the rear inputs of the Surround version of this program, and the early reflections generated by the ambience section of the program are directed only to the front three loudspeakers. Later reverberation is provided to all the loudspeakers, and all inputs will generate appropriate late reverberation. Ambient Chamber is particularly useful in two channel mode, and whenever a surround program is being designed to play back primarily in a two-channel matrix form.

Reverse & Surround Reverse

Reverse is a new algorithm that is somewhat different from the effect other processors call "Inverse." Unlike traditional Inverse, which is a gated reverb whose reflection density increases until a cut-off time is reached, Reverse’s reflection density decreases over time, while its reflection level increases over time, as if

you had recorded a signal through a reverb device, then played the recording backwards. This is the exact reverse of normal reverberant behavior, exactly like the time-honored effect of reversing a tape. The effect begins with a quiet, dense reverb and gradually becomes louder and thins out to reveal the original signal.

It's important to remember that in Reverse all the parameters work backwards. For example, if RtHicut (see parameter listing below) is low, the reverb will become brighter as it develops.

Reflections play an important part in this effect. They should be adjusted so that they occur at or near the end of the reverb. In other words, they play the role of the original signal, so they come last.

For Reverse to work as designed, the Mix parameter must be set 100% wet, both at the 960L and at the mixer!

Inverse

The traditional inverse effect can also be achieved, if desired, by using any of the Hall, Chamber, or Plate effects and doing as follows:

•Select a very large room Size.

•Bring Midrt all the way down.

•Set the Contour parameter to a high value (like 10).

•Control the overall shape and

density using Shape, Spread and Size.

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