Audiospektri Guitar Analyser Podręcznik - Strona 3

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compressor gain: A potentiometer that determines the string signals' gain before the

limiting compressor. If the gain is adjusted high, the signals are limited to constant

maximum amplitude even at a low input picking strength. This control is essential

when one desires to get dynamically evolving output signals, since the FM and

distortion effects are controlled also by the string amplitudes. Each string has a green

led next to its output showing when the corresponding string has reached the limiting

amplitude that also limits the amplitude dependent effect. So, in order to keep the

signal varying dynamically with the picking strength, avoid too early limiting and

adjust the compressor gain low enough. Instead adjust the output volume from the

center potentiometer. However, the limiter itself does not distort the signal further,

the leds just show when the signal remains constant at the maximum level.

effect adjust: The use of this potentiometer depends on the pedal connection status

when power is switched on. If the pedal is connected and not at zero voltage at that

time, the effect adjust potentiometer controls the gain of the pedal control. If the

pedal is not connected or positioned for zero voltage at startup, the selected effect

strength is determined solely by this potentiometer. NOTE: if the effect adjust

potentiometer is at the maximum clockwise position, the right side outputs will

supply only the string amplitude signals, not the synthetic oscillator signals. In

that case, the effect adjust function is only available from the pedal, and the oscillator

signals are only output from the composite out jack.

threshold: this control determines the threshold level of the guitar input signal that

enters the analysis SW. Adjust it for proper level for your guitar: if too high, weak

picking may be lost, if too low, spurious signals may be detected. You may also need

to adjust the guitar volume knob for good detection.

volume: This is the only analog control of the module, a typical final amplifier gain

control for the common "out". It has no control on the six voltage outputs, for them

you need to use the compressor gain and/or guitar volume potentiometer, if needed.

Jumpers

There are four removable jumpers that can be accessed through the openings made in

the backside protective metal shield. When viewed at the backside, the leftmost

jumper JP1 determines the logarithmic/linear characteristics of the CV notes outputs.

Keep it installed for the 1V/octave outputs, remove if you want the linear outputs.

Two jumpers determine the transpose multiplier of the output. When both are

inserted, the multiplier is 1.0, i.e. there is no transpose. The first, JP2 is just above

JP1. If you remove only it, the pitch multiplier is 2.0, i.e. one octave upwards. The

second jumper, JP3 is on the right side, it is the very lowest position jumper. If you

also remove JP3, the multiplier is 0.25, i.e. two octaves down. If you keep JP2 but

remove JP3, the multiplier is 0.5, i.e. one octave down. Please note that the CV note

output values are not affected by the transpose factor, only the composite out

terminal signal and the six outputs on the right side.

Finally, the upper right side jumper JP4 removal allows the direct guitar signal to be

output from the "out" jumper. All the six left side CV note and the six right side

outputs are not affected by JP4, they remain as described above. Jumper changes

should always be done with power disconnected.