Filter & Envelope Generator Editing

The VL70-m has two envelope generators which can be independently programmed to produce time-based variations in the sound.

●Amplitude & Filter EG

The Amplitude & Filter Envelope Generator controls both the amplitude of the sound and the cutoff frequency of the VL70-m filter from note attack to release. This envelope generator has three parameters which can be edited via the VL70- m panel: attack time, decay time, and release time. Amplitude control defines the basic “shape” of the notes produced, while filter control makes it possible to create a variety of dynamic timbral sweeps.

■NOTES

•Most voices use the low-pass filter type, but some use the bandpass, high-pass, or band eliminate types. The filter type cannot be edited via the VL70-m panel controls. For detailed filter parameter programming use the VL70-m Expert Editor software (page 25).

•Very little filter processing is used on some voices. In such cases, the effect of the filter may be barely noticeable.

•The effect of editing the Amplitude & Filter envelope generator parameters may not always be as expected — particularly with plucked string instrument voices such as guitar or bass. This is because the VL70-m actually simulates the plucking, free oscillation, and muting of the strings rather than simply using an EG to approximate these events.

●Pitch & Embouchre EG

The Pitch EG controls both the pitch of the note and the embouchre applied to the note from attack to release. Initial level, attack time, release level, and release time parameters make it possible to produce a wide range of pitch variations at note attack and release.

■NOTES

•Pitch control alone may not always produce the expected result with voices in which the internal parameters emphasize embouchure rather than pitch. For detailed editing of all VL70-m parameters use the VL70-m Expert Editor software (page 25).

66Filter & Envelope Generator Editing