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* A. S. P. (Fostex Advanced Signal Processing Technology)
The A. S. P. is an exclusive new digital effect processing technology designed by
Fostex. This method extracts maximum efficiency from the limited DSP power.
It achieves an overwhelmingly high density Early Reflection sound and wonder-
fully smooth High Dump response through the H. F. A. (Harmonic Feedback Algo-
rithm). Also, it carries out an elaborate reverb simulation with clear sounds through
the H. D. L. P. (Hi-Density Logarithmic Processing), which eliminates the mutual
interference between the numerous integrated delay modules and reduce the
impurity and girt of the sound.
Effect Edit Mode
* H. F. A. (Harmonic Feedback Algorithm)
There is one of indispensable elements in the natural echo called “Early Reflection Sound,” which is
usually sacrificed in commercial reverb products in order to reduce costs. (In practice, the Early Reflec-
tion Sound means the very first reverberated sound that bounces back from walls, floors and ceilings of
concert halls). The entire reverb sound quality depends on this Early Reflection Sound and how closely
it can resemble the real echo. The H. F. A. is an algorithm that enables the effect unit to reproduce a clear
and natural Early Reflection Sound by applying an ideal harmonic feedback to each delay module.
* H. D. L. P. (Hi-Density Logarithmic Processing)
The reverb sounds consist of lots of small delay elements combined in a complex way, which are pro-
duced by many delay modules inside the effect unit. In order to obtain smooth and comfortable reverb
sounds, it is very important to efficiently organize the relationship between each delay module and
minimize negative mutual interference. The H. D. L. P. is a technology which applies efficient logarith-
mic processing to each delay module, so that they can work in the most efficient way in order to elimi-
nate harmful reverb elements and roughness. This makes it possible to establish high density and
transparent sounds.
Before the operation, we will briefly discuss the effect functions here such as Reverb, Delay, Chorus, and
Flanger, which are integrated in the VF-16.
The so called Reverb effect consists of various re-
flection sounds mixed together. For example, when
you clap your hands in a tunnel, you will hear the
sound linger even after you stop clapping your
hands. This is the Reverb.
The sounds we normally hear in daily life have three
types of sounds mixed together, i.e., “Direct sound,”
“Early Reflection sound” and “Late Reflection sound.”
The Direct sound means the sound directly reaches
the ears from the sound source. The Early Reflec-
tion sound means the sound that comes after the
Direct sound and has rebound off the wall of the
tunnel up to a few times. The Late Reflection sound
means that the sound rebounds many times long
after the Direct sound has disappeared. Our ears
normally hear the “Direct sound” - “Early Reflec-
tion sound” - “Late Reflection sound” in the order.
The VF-16 offers high quality ambient effects by employing the A. S. P. (Fostex Advanced Signal Processing
Technology), which is exclusively developed by Fostex. With the A. S. P., you can obtain an incomparably
clean and high density Hall Reverb, overwhelmingly clear Room Reverb and wonderfully hi-fidelity Plate
Reverb. In addition to these typical Reverbs, the VF-16 provides not only various practical algorithms such as
Delay, Chorus, Flanger and Pitch Bend, but some combinations of these are also available, e.g., Delay+Reverb.
The Flanger is one of applications of the Delay.
This is used to create a sound like a jet airplane as-
cending or descending.
This makes the one original sound appear to have
many sources. The Chorus is used to widen or
thicken the original sound.
This is the effect to added a delayed sound to the
original sound. You can obtain a richer sound or
completely change the original source sound by us-
ing the Delay.
Reverb
Delay
Chorus
Flanger