Using The Reverb ProgramLexicon, Inc.

Parameters Used in the 960L Algorithms, Continued

Size

Size is a scale factor that alters the length of most of the reverb’s delay elements. This control is

 

calibrated in units that approximate the longest dimension of the reverberant "space" in meters.

 

In practice, perception of room size is also strongly determined by Shape. Size strongly affects

 

the overall timbre of the reverberation. Values less than 25 have a noticeable "small room"

 

coloration. For the most neutral sound with the programs that have Shape and Spread controls,

 

set Size to about 30M, and the adjust the apparent size with Shape and Spread.

Slope

Slope (Reverse algorithm only) multiplies low-frequency energy and is similar in its effect to Bass

 

Multiply.

Spin

Spin and Wander introduce small random variations within the reverberation, continuously

 

altering the reverb timbre to create a more natural sound. Spin controls the relative rate of

 

motion and the speed with which changes occur, expressed in arbitrary units. Wander controls

 

the amount of change. At extreme settings, these parameters can introduce slight wobbles that

 

are audible in critical material such as classical guitar or piano.

Spread

Spread works with Shape to control the profile of initial reverberant-energy growth. Shape sets

 

the contour of the energy growth and Spread stretches or compresses this contour in time to

 

make reflections closer together or further apart. With complex material, it may be advisable to

 

use a moderately high value for shape and a moderately low one for spread to create a bit of

 

space around the original signal. Large values of Spread and Shape can create "inverse" effects

 

(see note under Reverse algorithm). See also Contour.

Steering

Steering (Stereo algorithms only) controls a matrix encoder that affects only the reverberant

 

tails. This provides a reverberation that will decode into surround without strong early

 

components that might trigger phase correction devices. Steering is not continuously variable,

 

but offers the following choices:

Mono -- Mono sum tail.

Narrow -- between mono and stereo.

Stereo

Wide -- Expanded Stereo.

Lex -- LexiconLogic™ , a matrix that includes separate left and right surround signals when used with a Lexicon Logic decoder, but is also compatible other commercial matrix codings and with stereo and mono.

Matrix -- 4-2-4 encoding.

Wander

Wander and Spin introduce small random variations within the reverberation, continuously

 

altering the reverb timbre to create a more natural sound. Spin controls the relative rate of

 

motion and the speed with which changes occur, expressed in arbitrary units. Wander controls

 

the amount of change. At extreme settings, these parameters can introduce slight pitch wobbles

 

that are audible in critical material such as classical guitar or piano.

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Lexicon 960L owner manual Size, Slope, Spin, Spread, Steering, Wander