APPLIED ACOUSTICS SYSTEMS Strum Acoustic GS-1, Руководство пользователя

Страница: 52 / 91

52 Parameters
Amplitude (dB)
0dB
Gain = 30 dB, Q = 20
Gain = 20 dB
Gain = 30 dB, Q = 50
Gain = 10 dB
Gain = 30 dB, Q = 20
Frequency (Hz) Freq
Figure 23: Peak filter.
mono and stereo chorus, a mono an stereo flanger, a vibrato, a phaser, an auto wah, a wah wah and
a notch filter.
The different effects can be synchronized to the clock of a host
sequencer using the
Sync
drop-down menu. Sync values range
from 1/8 of a quarter note (a thirty-second note) to 16 quarter notes
(4 whole notes) where the duration of the whole note is determined
by that of the sequencer clock. The effect can also be synced to a
triplet (t) or dotted note (d).
Each of the effect of the module can be controlled using three
offset knobs. When in their center position, the effect is adjusted
according to the factory settings. Turning the knobs to clockwise or anti-clockwise allows one to
deviate from this default setting as described below.
6.4.1 Delay
The Multi-Effect module includes 3 different types of delay effects: Ping Pong , Digital and Tape
Delay . The Digital delay consists in a standard delay line with feedback. The tape delay is similar
but also includes a low-pass filtering effect in order to simulate the attenuation of high frequencies
in analog tape delays. The
Ping Pong delay is based on two delay lines resulting in a signal traveling
from one channel to the other, each time attenuated by a coefficient.
The Wet knob is used to adjust the amount of “wet” signal present in the output signal from the
effect. When the knob is adjusted in the left position, only the original or “dry” signal is sent to the
output. Turning this knob clockwise increases the amount of processed or “wet” signal sent to the
output. In its rightmost position, only “wet” signal is present in the output signal. The
Feedback
knob is used to adjust the amount of signal re-injected into the delay lines or in other word the
amount of feedback introduced in the line. In its leftmost position, there is no signal re-introduced