What is Granulator ?
Granulator is a real-time, MIDI controllable, granular synthesizer.
Granular synthesizers generate thousands of very short sonic grains to create audio textures.
What are the parameters of Granulator ?
density: number of grains by time frame
duration: duration of the grain
For high density and duration values, over one hundred grains can be playing at the same time.
Playing over 100 voices simultaneously requires a lot of CPU resources.
The CPU load is displayed as a percentage in the title bar of Granulator's window.
This value is refreshed every second.
pitch: pitch of the grain
offset: the starting point of the grain in the waveform
waveform: to select a new waveform, double-click on the graphic.
cutoff: cutoff frequency of the filter
resonance: resonance of the filter
This is a low pass filter with a 24dB/octave slope.
attack: the attack time of the envelope
release: the release time of the envelope
To speed up the calculations, the envelope is trapezoidal.
Although it would be nice to have other envelope shapes, this is usually sufficient for granular synthesis.
If the attack and release parameters are both set to 0 the envelope has the shape of a pulse.
If the attack and release parameters are both set to 127, the envelope has a triangular shape.
amplitude: amplitude of the grains
pan: position of the grains in the stereo field.
length: the duration of the delay
feedback: the feedback of the delay
Moreover, each parameter can also be modulated by a random generator.
How to use Granulator ?
Live usage: you can use Granulator in real-time, with the mouse or from a MIDI controller.
A MIDI control change number can be assigned to every knob.
Studio usage: you can record Granulator's audio output into a .WAV file with the Record button.
Then, you can process the .WAV file in any sound editor such as Sound Forge / Wavelab etc..., or import it as an audio track in a sequencer.
Note that some sound cards such as the SoundBlaster Live also allow you to record the output of the card while its playing.
You can also use utilies such as AudioMagic.
Example:   Base sample: voice.wav       Result: granular ghosts.wav
The current version number is 1.1. Click here to download Granulator. You just need to unzip the file and the program is ready. Make sure you read the documentation (the Granulator_doc.txt file).