Grain Settings

The grain settings below the waveform allow you to set up the grains, that is, specify the number of grains that you want to use, their duration, etc.

Number of Grains

You can specify the number of grains for each channel of the sample. At a setting of 2, the two grains are offset by 180°. Due to this phase offset, the root of the spectrum is canceled out, and the pitch increases by one octave. To compensate for this, adjust the Position Spread, Position Offset, or Duration Spread parameters.

Duration

Increases the grain period by a factor ranging from 1 to 1000.

For very short grains, the sound is assigned the pitch of the frequency at which the grains repeat. For grains longer than 30 ms, the sound assumes the pitch of the original sample. This is the case for Center Key C3 if the Duration is set to a value above 10, for example.

Duration Key Follow

Determines how the grain duration changes with the notes you play. It is mostly used with short durations. Longer durations sound with the original pitch of the sample and therefore, do not need to follow the keyboard.

With a Duration of 1 and a Duration Key Follow setting of 100%, the difference in pitch between two keys is one semitone, which corresponds to the standard keyboard tuning. Longer durations lead to an audible volume modulation that is different for the different keys. To apply the same volume modulation with each key, set Duration Key Follow to 0%.

Note

The volume modulation is only audible if the grain is long and if you only use a few grains.

Duration Random

Sets the random grain duration. This duration is calculated at the start of a new grain. This can be used to widen the panorama of the sound. At a setting of 100%, the grain duration varies between half and twice the grain period.

Duration Spread

This parameter is available if Number of Grains is set to a value higher than 1. It modifies the grain durations by the factor you set. This way, each grain is played with a different duration. A setting of +100 % corresponds to twice the original duration, and a setting of -100 % to half the original duration.

For short grains with a duration of 1, lower Spread values result in slightly different pitches for the different grains. Higher Spread values are perceived as the sound being detuned.