Yamaha VL-1, Owner'S Manual

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14
Getting Started
Impulse Expander
The Impulse Expander works in conjunction with the Resonator, described
below, to simulate the effect of an instrument’s resonant cavity or sound
box. It can also be used to simulate the acoustic environment in which the
instrument is played. In contrast to the Resonator, the Impulse Expander is
more suited to the simulation of metallic resonances and is thus invaluable
for refining the sound of brass and metal-bodied woodwinds. Other impor-
tant effects are the ability to diffuse sharp attack sounds and to give depth
and realism to vibrato. [Page 56]
Resonator
While the Impulse Expander and even the Harmonic Enhancer tend to give
the sound a metallic quality, the Resonator produces a more woody reso-
nance effect. Careful adjustment of the resonator’s parameters can often
bring a not-quite-right voice to life. [Page 57]