BSS Audio DPR 522, User Manual

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8.0 General applications
8.1 Basic gating
Rotate the THRESHOLD control to the OUT position, apply a signal to the
MAIN input and observe that there is no output. Rotating the THRESHOLD
control anticlockwise, you should see some indication on the KEY LEVEL
meter. When this activity exceeds the TH mark on the meter you will hear the
signal appear and should see the GATE LEDs change state. If the signal is only
allowed to briefly exceed the TH level the sound will appear chopped up.
Adjusting the ATTACK, HOLD and RELEASE controls will change the nature
of the sound. You may find that certain settings of these controls never allow
the gate to close.
Set the THRESHOLD so that the gate no longer opens, and now adjust the
RANGE control. Notice that even though the gate is shut, as confirmed by the
GATE LEDs, you can adjust the sound level anywhere between fully off and
fully on. This can be useful as having the gate close too far can impart an
unnatural character to the sound.
8.2 Frequency
conscious gating
Set the KEY filter control to 1KHz and the WIDTH control to 8 oct. With a
signal applied to the MAIN input and depressing the EXT KEY switch, you
should now hear the program. Rotate the WIDTH control and notice that the
range of the sound changes, becoming more limited as the control is rotated
anticlockwise.
Leave the WIDTH control in approximately the 9 o’clock position and now
adjust the KEY FILTER control. As you turn it anticlockwise, the bass notes
will become prominent. Turning the control clockwise will cause the treble to
become more prominent.
Select some music with a heavy beat and set the KEY FILTER and WIDTH
controls so that the beat notes are the ones registering on the KEY LEVEL
meter. When you are happy with the filter controls, release the KEY LISTEN
switch. Now adjust the THRESHOLD control until the beats, as displayed on
the meter, just exceed the TH mark, you should now hear the beats in the
program. Experiment with the filter and the ATTACK, HOLD & release
controls to extract other sounds in the program.
General applications