Instruction Manual
20.1. IMPULSE 286
20.1.3 Filter
The Filter section offers a broad range of lter types, each of which can impart different
sonic characteristics onto the sample by removing certain frequencies. The Frequency
control denes where in the harmonic spectrum the lter is applied; the Resonance control
boosts frequencies near the points in the spectrum where frequencies are excluded by
ltering. Filter Frequency can be modulated by either a random value or by MIDI note
velocity.
20.1.4 Saturator and Envelope
The Saturator gives the sample a fatter, rounder, more analog sound, and can be switched
on and off using the appropriate switch. The Drive control boosts the signal and adds
distortion. Note: Turning Drive up makes almost every signal get much louder, and so will
usually require that volume be lowered manually. Extreme Drive settings on low-pitched
sounds will produce the typical, overdriven analog synth drum sounds.
The envelope can be adjusted using the Decay control, which can be set to a maximum of
60.0 seconds. Impulse has two decay modes: Trigger Mode allows the sample to decay with
the note; Gate Mode forces the envelope to wait for a note off message before beginning
the decay. This mode is useful in situations where you need variable decay lengths, as is the
case with hi-hat cymbal sounds.
20.1.5 Pan and Volume
Each sample has Volume and Pan controls that adjust amplitude and stereo positioning,
respectively. Both controls can be modulated, Pan by velocity and a random value, and
Volume by velocity only.