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Guitar Analyser Manual
The Guitar Analyser Eurorack module does a full analysis of the signal of a typical six string guitar.
It measures the individual pitch frequency and amplitude of each of the strings. The results of the
analysis are output from the 3.5mm jacks of the module. Additionally, the module has several
effects that can be activated to the synthetic signals using the analysis results. The module can be
used as an input interface to bring the guitar signal to a Eurorack system, or as a stand alone guitar
synthesizer generating signals that are impossible to create using typical filtering based modules. It
is 95.5mm wide, occupies 19 HP units.
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Table of Contents
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Summary of Contents for Audiospektri Guitar Analyser
- Page 1 Guitar Analyser Manual The Guitar Analyser Eurorack module does a full analysis of the signal of a typical six string guitar. It measures the individual pitch frequency and amplitude of each of the strings. The results of the analysis are output from the 3.5mm jacks of the module. Additionally, the module has several effects that can be activated to the synthetic signals using the analysis results.
- Page 2 Inputs guitar in: ¼” jack for connecting the guitar. Use the neck microphone of the guitar; typically a humbucker mic is more reliable in the note detection than a single coil. pedal: ¼” jack for guitar effect pedal input. The special effects are adjusted either by a pedal or the front panel “effect adjust”...
- Page 3 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.
- Page 4 Channel allocation method The three alternatives how the separate string analysis results are output to the six left and right side 3.5mm jacks are described in the following. The “picking order” alternative allocates the notes starting from number 1 channel in the timely order in which the guitar is picked.
- Page 5 Pedal effects The three position toggle switch selects one of three possible effects to be applied to the synthetic signal, FM, vibrato or distortion. FM is the classical FM modulation effect used in many synthesizers. The base signal without any effects is pure sinewave without any harmonics. When the FM effect is applied, several harmonics will appear, depending on the modulation strength.
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