Big Blue Manual August, 2019
Shape The shape parameter changes between four oscillation modes.
Sine Wave provides a smooth sounding tone, and is the fundamental building block of sound. A sine
wave provides a single frequency with no harmonics.
Triangle Wave provides two sloping sides with a sharp peak. Triangle waves provide a sharper sound
with harmonics at the inverse square of its harmonic number. This means that a triangle wave at 100Hz
would provide harmonics at 300Hz with an amplitude of 1/3ˆ2 (0.1111), 500Hz, 700Hz, etc.
Sawtooth Wave provides a sharp ramp followed by an immediate drop. This is characterized by a more
brassy sound. The harmonics are equal to the inverse of its harmonic number, meaning that a 100Hz
tone will be accompanied by a 200Hz tone at 1/2 the amplitude, a 300Hz tone at 1/3 the amplitude,
etc.
Square Wave provides an oscillation of on and o, at equal intervals. These give a warm sound, but not
as clean as a sine wave. Square waves provide odd harmonics at the inverse of its harmonic number.
Thus, a 100Hz square wave will provide a 300Hz harmonic at 1/3 the amplitude, 500Hz at 1/5 the
amplitude, etc.
Octave
The Octave parameter allows you to specify octaves above or below the current octave.
This allows for you to adjust the octave to be up to
5
octaves above and
5
octaves below the current
octave.
The octave that is selected is displayed by the three LEDs above the button, with Green being octaves
above, and Red being octaves below.
Lights Octave
O O O Current Octave
O O On One Octave Above or Below
O On O Two Octaves Above or Below
O On On Three Octaves Above or Below
On O O Four Octaves Above or Below
On O On Five Octaves Above of Below
Mix
The Mix parameter allows for you to choose the volume at which the VCO or external input is
when mixed into together.
SV Modular 6
