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Using an external audio input source to control the image
(Sound Control function)
The CG-8's Sound Control function lets you control the image by detecting the peaks
in an audio signal received from the internal mic or the [LINE IN] jacks. You can use
these detected audio peaks to control the timing at which an effect is modulated, or use
the audio peaks to switch patches automatically.
fig.front13.e.eps
[PEAK] indicator
[INPUT SELECT] switch
1
If you're inputting audio via the CG-8's internal mic, press the [INPUT SELECT]
switch so it is in the inward position. If you're inputting audio from the rear panel
[LINE IN] jacks, press the [INPUT SELECT] switch so it is in the outward position.
2
Turn the [INPUT LEVEL] knob to adjust the input level.
The [SIGNAL] indicator will light blue when an audio signal is received. If the
indicator does not light, raise the input level (turn the knob toward the right).
If the input level is too high, the [PEAK] indicator will light red. If the indicator stays
lit, lower the input level (turn the knob toward the left).
3
Turn the [PEAK FREQ] knob to specify the center frequency at which you want to
detect peaks in the audio.
Turn the [PEAK FREQ] toward the left if you want to detect low-frequency peaks such
as bass drum, or toward the right if you want to detect high-frequency peaks such as
cymbal.
The [DETECTION] indicator will light when the CG-8 detects peaks in the region you
specify.
* As a special case, turning the [PEAK FREQ] knob all the way toward [LOW] will cause peak
detection to respond not to a specific frequency but to the overall power of the sound. In cases
such as when a very large number of instruments are playing, or when the sound is
continuously at a high volume, you may find it more useful to turn the knob all the way
toward [LOW].
Internal mic
[DETECTION] indicator
[PEAK FREQ] knob
[INPUT LEVEL] knob
[SIGNAL] indicator
Various playback methods
The Sound Control
function won't work
properly if the input level
is set inappropriately. If
you're inputting audio
from a musical instrument,
adjust the level so that the
[PEAK] indicator lights
briefly when you play most
strongly.
41
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