Boss Audio Systems GS-10 Introduction to Effects and Parameters Wave, Chromatic, Octave Shift

Chapter 4 Introduction to Effects and Parameters

Wave

This selects a wave type that is the source of the guitar synthesizer.

Square:

The unit detects the pitch and attack information from the input guitar sound, then send the square waveform

( ) from the internal sound generator.

Saw:

The unit detects the pitch and attack information from the

input guitar sound, then send the saw waveform ( ) from the internal sound generator.

Brass:

The unit directly processes the input guitar sound and creates a guitar synthesizer sound. It gives a quick sound rise and send the sound with a sharp edge.

Bow:

The unit directly processes the input guitar sound and creates a guitar synthesizer sound. It outputs a soft sound without attack.

Chromatic

This switches on or off the chromatic function. When it is on, the pitch change of the synthesizer sound is in semitone steps. This does not respond to pitch changes less than a semitone, such as what might be obtained with bending or vibrato. Thus, this is effectively used for realistically playing musical instruments whose pitch will change in steps greater than a semitone, such as a keyboard.

*Use this parameter when “Square” or “Saw” is selected for wave.

Octave Shift

This allows you to shift the pitch of the internal sound module in an octave step from the guitar sound.

*This parameter should be set when “Square” or “Saw” is selected for the wave.

PWM Rate (Pulse Wise Modulation Rate)

This gives breadth or fatness to the sound by applying modulation to the waveform (only to Square) in the internal sound module. A higher value will quicken the rate of the modulation.

*This parameter should be set only when “Square” is selected for the wave.

PWM Depth (Pulse Wise Modulation Depth)

This adjusts the depth of the PWM. When it is set to “0,” no PWM effect is obtained.

*This parameter should be set only when “Square” is selected for the wave.

Cutoff Freq (Cutoff Frequency)

This adjusts the frequency where the harmonics contents of the sound are cut off.

Resonance

This adjusts how much of the harmonics contents around the cutoff frequency should be emphasized.

FLT.Sens (Filter Sensitivity)

This adjusts the sensitivity of the filter. When it is set to a lower value, the filter is affected only with stronger picking. When it is set higher, the filter changes even with weaker picking. When it is set to “0,” the depth of the filter will be the same no matter how the picking strength may be.

FLT.Decay (Filter Decay)

This sets the time needed for the filter to finish its sweep.

FLT.Depth (Filter Depth)

This adjusts the depth of the filter. When the value is higher, the filter will change more drastically. The polarity of the filter will be opposite with “+” and “-.”

Attack

This adjusts the time needed for a synthesizer sound to reach its maximum. When it is set to a lower value, the sound will rise quickly. When it is set higher, the sound will rise slowly. When it is set to “Decay,” the sound will rise quickly and turn to a Release status regardless of the input of the guitar sound.

*When “Brass” or “Bow” is selected for the wave, the attack time will not be quicker from a certain level even if the attack is set to “Decay” or “0.”

Release

This determines the time needed for the synthesizer sound to reach zero from the moment the input of the guitar sound is completed.

*When “Brass” or “Bow” is selected for the wave, the guitar signal itself is processed. That is, the synthesizer sound will go down when the guitar signal goes down no matter how long the release may be set.

Section 4

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