JPverb | SuperCollider 3.14.0 Help

Description

An algorithmic reverb, inspired by the lush chorused sound of certain vintage Lexicon and Alesis reverberation units. Designed to sound great with synthetic sound sources, rather than sound like a realistic space.

Developed as part of the DEIND project.

NOTE: Please increase server realtime memory for this to work properly

Class Methods

JPverb.ar(in, t60: 1.0, damp: 0.0, size: 1.0, earlyDiff: 0.707, modDepth: 0.1, modFreq: 2.0, low: 1.0, mid: 1.0, high: 1.0, lowcut: 500.0, highcut: 2000.0)

NOTE: This UGen always generates a stereo signal.

Arguments:

in	input to the reverb. Either an array of two audio signals (stereo), or a mono audiosignal.
t60	approximate reverberation time in seconds `(0.1..60 sec)` (`T60` - the time for the reverb to decay by 60db when `damp == 0` ). Does not effect early reflections.
damp	controls damping of high-frequencies as the reverb decays. 0 is no damping, 1 is very strong damping. Values should be between `(0..1)`.
size	scales size of delay-lines within the reverberator, producing the impression of a larger or smaller space. Values below 1 can sound metallic. Values should be between `(0.5..5)`.
earlyDiff	controls shape of early reflections. Values of 0.707 or more produce smooth exponential decay. Lower values produce a slower build-up of echoes. Values should be between `(0..1)`.
modDepth	depth `(0..1)` of delay-line modulation. Use in combination with modFreq to set amount of chorusing within the structure.
modFreq	frequency `(0..10 Hz)` of delay-line modulation. Use in combination with modDepth to set amount of chorusing within the structure.
low	multiplier `(0..1)` for the reverberation time within the low band.
mid	multiplier `(0..1)` for the reverberation time within the mid band.
high	multiplier `(0..1)` for the reverberation time within the high band.
lowcut	frequency `(100..6000 Hz)` at which the crossover between the low and mid bands of the reverb occurs.
highcut	frequency `(1000..10000 Hz)` at which the crossover between the mid and high bands of the reverb occurs.

Returns:

a UGen.

Inherited class methods

Instance Methods

Inherited instance methods

Examples

Minimal example (headphones recommended):

Ndef-based example:

(
s.options.memSize_(65536 * 2);
s.reboot;

Spec.add(\t60, [0.1, 60, \exp]);
Spec.add(\damp, [0, 1]);
Spec.add(\size, [0.5, 3]);
Spec.add(\earlydiff, [0, 1]);
Spec.add(\mdepth, [0, 50]);
Spec.add(\mfreq, [0, 10]);
Spec.add(\lowx, [0, 1]);
Spec.add(\midx, [0, 1]);
Spec.add(\highx, [0, 1]);
Spec.add(\lowband, [100, 6000, \exp]);
Spec.add(\highband, [1000, 10000, \exp]);
)

Ndef(\src).clear
(
Ndef(\src, {
    //SoundIn.ar([0, 1])
    Splay.ar(Impulse.ar([1, 3, 5, 7, 9]).scramble);
});

Ndef(\reverb, {
    var src = Ndef(\src).ar * \amp.kr(1);
    src = JPverb.ar(
        src,
        \t60.kr(1,           0.05),
        \damp.kr(0,          0.05),
        \size.kr(1,          0.05),
        \earlydiff.kr(0.707, 0.05),
        \mdepth.kr(5,        0.05),
        \mfreq.kr(2,         0.05),
        \lowx.kr(1,          0.05),
        \midx.kr(1,          0.05),
        \highx.kr(1,         0.05),
        \lowband.kr(500,     0.05),
        \highband.kr(2000,   0.05)
    );
});
)

Ndef(\reverb).fadeTime = 1;
Ndef(\reverb).play
Ndef(\src).play

Ndef('reverb').set('lowx', 0.84375, 'amp', 0.66015625, 'damp', 0.671875, 'size', 0.94921875, 'highband', 4450.794062356, 't60', 16, 'mdepth', 17.96875, 'mfreq', 0.0, 'highx', 0.0, 'lowband', 2450.0822520097, 'earlydiff', 0.421875, 'midx', 0.5546875);

// Dreamverb
Ndef('reverb').set('wet', 0.9921875, 'lowx', 0.84375, 'amp', 0.66015625, 'damp', 0.31443298969072, 'size', 2.7938144329897, 'highband', 1024.0219794048, 't60', 60, 'mdepth', 4.639175257732, 'highx', 0.0, 'mfreq', 0.10309278350515, 'lowband', 2450.0822520097, 'fadeTime', 1, 'earlydiff', 0.421875, 'midx', 0.70618556701031);

Ndef('reverb').set('lowx', 0.84375, 'amp', 0.66015625, 'damp', 0.671875, 'size', 0.94921875, 'highband', 4450.794062356, 't60', 60, 'mdepth', 17.96875, 'mfreq', 0.0, 'highx', 0.0, 'lowband', 2450.0822520097, 'earlydiff', 0.421875, 'midx', 0.5546875);

Ndef('reverb').set('lowx', 0.609375, 'amp', 0.38092041015625, 'damp', 0.2890625, 'size', 0.6171875, 'highband', 7233.9416273667, 't60', 4.0375572334984, 'mdepth', 0.0, 'mfreq', 2.03125, 'highx', 0.2265625, 'lowband', 681.56675509913, 'fadeTime', 1, 'earlydiff', 0.765625, 'midx', 0.515625);

Ndef('reverb').set('lowx', 0.84375, 'amp', 0.66015625, 'damp', 0.875, 'size', 0.5, 'highband', 5829.4153471361, 't60', 0.16483258382257, 'mdepth', 17.96875, 'mfreq', 0.0, 'highx', 0.0, 'lowband', 100.0, 'fadeTime', 1, 'earlydiff', 0.703125, 'midx', 0.5546875);

Ndef(\src).edit
Ndef(\reverb).edit;

For the Verber piece ( see http://tai-studio.org/portfolio/verber.html ), the following source was used, Ndef(\hole) remains unchanged.

NOTE: Since Impulse and LFPulse are chosen to be used at evaluation time, the given argument names might not match to the chosen UGen's interface. Since a superfluous argument does not affect a UGen's operation, the warnings can be ignored.

helpfile source: /usr/local/share/SuperCollider/Extensions/SC3plugins/DEINDUGens/HelpSource/Classes/JPverb.schelp
link::Classes/JPverb::

JPverb : Object Extension