Srs (Sound Retrieval System); Stereo Simulation - Kurzweil K2600 Musician's Manual

Advanced KDFX
Using the Algorithms
The other four oscillators, Sine2 through Sine5, each have Lvl and Freq controls.

SRS (Sound Retrieval System)

SRS, which is used under license from SRS Labs, Inc., is a single-ended processing system that
produces a fully immersive, three-dimensional sound image from any audio sourceÑmono,
stereo, surround sound or encoded with any other audio enhancement technologyÑwith two or
more standard speakers.
The four parameters control the ambience of the image, and may have different optimal settings
depending on the amount of stereo content in the inputs. To match the optimal settings speciÞed
by SRS Labs, the bass and treble gains should be set to 0 dB. This algorithm will have no effect
on mono signals. All ranges are -79.0 to 24.0 dB.
Center varies the amount of Òcenter channelÓ in the output. It has an Off position.
Space controls the width of the image. It, too, has an Off position.
Bass Gain and Treb Gain set the amount of ambience added to the low and high frequencies,
respectively, in the signal. Setting both of these to 0 dB gives a best match to the optimizations of
SRS Labs.

Stereo Simulation

The Mono to Stereo algorithm converts a monaural input to simulated stereo output.
In Select selects the input signal to be ÒstereoizedÓ. It can be Left, Right, or both ((L+R)/2)).
CenterGain is the level of the summed left and right channels. Range is Off/-79.0 to 24.0 dB.
Diff Gain is the level of the difference signal produced, which is the spatial component of the
stereo signal. Range is Off/-79.0 to 24.0 dB.
DiffBassG is a gain parameter for a bass-shelf Þlter on the difference signal. By boosting the low
frequency components of the difference signal, you can increase the sense of acoustic
envelopment. Range is -79.0 to 24.0 dB.
DiffBassF is the transition frequency for the bass-shelf frequency. Range is 16 to 25088 Hz.
The processed signal is split into three frequency bandsÑLo, Mid, and HighÑeach of which can
be delayed and panned separately.
Crossover1 and Crossover2 are the two Crossover frequencies at which the band-split Þlters
split the signal into three bands. The two parameters are interchangeable: either may have a
higher frequency than the other. Range is 16 to 25088 Hz.
Pan band sets the pan position for each band. Range is -100% (fully left) to 100% (fully right).
Delay band sets the delay for each band. Range is 0 to 1000 ms.
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