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OB 12
- LFO2: the second low frequency oscillator
- EG: the envelope generator
The selection will be confirmed by illumination of the corresponding LED.
N.B.: If you have deleted the square waveform (by means of the [WAVE MIX] slider or the
[WAVE SELECT] button referred to this signal) you will not be able to hear any acoustic effect
generated by this control.
[KBD TRACK]
(Keyboard Tracking)
the keyboard (with the Keyboard Tracking function active), so that each note corresponds to
each single key, or with the function disabled, giving generation of the same note regardless
of which keyboard note has been pressed. Use the [FINE] and [RANGE] trimmers to regulate
the pitch of the signal and thus of the note generated.
The LED will display the status of the function in accordance with the following logic:
- LED on:
function active
- LED off:
function disabled
In this section you can regulate the balancing between the two oscillators, a Ring Modulator and
white noise, and specify the envelope of the two oscillators, i.e. how the tuning will change over
time.
The Ring Modulator multiplies the two waveforms emitted by Osc.1 and Osc.2 to produce a
signal formed by a large number of harmonic and unharmonic partials not present in the original
signals. The main feature of the Ring Modulator is that it makes the sound more metallic, dissonant
and almost out of tune.
White noise is a wide-band non-periodic signal containing all the frequencies in the audible band,
which you can use to add a slight hiss to the original signal. It is useful when simulating sounds
containing noises or unharmonic elements.
The OSC.COMMON section containing the following controls:
[BALANCE]: these three sliders regulate the balancing of the oscillators, the Ring Modulator
and the Noise in accordance with a clearly defined logic. The first slider on the left regulates
the balancing between Osc.1 and Osc.2. With the slider in the lowest position, only the signal
received from Osc.1 will be present, while as the slider is raised the amount of signal received
from Osc.2 will increase and the proportion of the Osc.1 signal will decrease, until (with the
slider completely up) only the signal generated by Osc.2 is present. With the slider in the
central position, identical amounts of the Osc.1 and Osc.2 signals will be present. The second
: you can use this button to choose between standard use of
150
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