ABox Help Basics Objects Signals Tutorials
ButtonKnob
OscillatorNoise
Math OperatorFunction 1
ADSRSample and Hold
Pitch QuantizerRandom Sequence
Math KnobDelta
DelayDivider
DamperDecay
IIR z PlaneIIR Block
SplitterMixer
MultiplexerDemultiplexer
Wave OutWave In
OscilloscopeSpectrum Analyzer
LabelFile
Knob

Value dB Attenuation Hertz Seconds Delay Time Note Frequency Note Ratio Midi Note

The knob produces values between ±1.0.
The value may be displayed a number of ways.


Pins:
XOutput X = Displayed value
Controls:
One control wiper.
Keyboard and Context menu:
deldelete the object
llinear taper (default)
aaudio (log) taper
vdisplay as value (default)
ddisplay as decibels attenuation
hdisplay as Hertz (cycles per second)
ndisplay as equally tempered note (frequency)
idisplay as musical interval (ratio)
mdisplay as midi note
sdisplay as seconds (time)
bdisplay as Beats Per Minute (tempo)
edisplay as delay time (for the delay object)
1-9Set number of turns ( 1-65536 in 4x jumps )
num 1set value to +1.0
num 0set value to 0.0
num +make value positive
num -make value negative
Default State:
display as value
1 turn
linear taper
value = 0.0
Display Formats:
Note Frequency:name octave ±cents.
Example above reads "A flat, 9th octave, detuned -19 cents". Applicable for frequency inputs.
Note Ratio: interval ±cents octave.
Example above reads "minor third plus 4 cents, two octaves down". Applicable when two frequencies are multiplied together.
Midi Note: note number fraction of note
The number is not rounded to the closest note.
In the example above, the Midi note is 35 + 76 cents, which would be heard as midi note 36 - 24 cents.
Notes:
To control the knob, left click and drag while the control circle is highlighted.
The control wiper always points at the mouse. Move the mouse around the center of the knob to use multi turn.
Knobs turn backwards compared to those found on other electronic equiptment.
When the maximum value is reached, the knob will slip back one turn.
Settings on the knob may be adjusted with the keyboard while the knob is being controlled with the mouse.
Changing the display setting does not change the output value.
When the circuit is playing, changes to a knob are intepolated across the sample frame (23ms).