User Manual

THOR POLYSONIC SYNTHESIZER
(RECORD+REASON)
569
D The Waveform selector button in the bottom left corner is used to set the Oscillator mode.
The following modes are available:’
About Oscillator Sync
Oscillator sync is when one oscillator will restart the period of another oscillator, so that they will have the same base
frequency. If you change or modulate the frequency of the synced oscillator you get the characteristic sound associ-
ated with oscillator sync.
A synced oscillator that resets the other oscillator(s) is called the master, and any synced oscillator that is reset by an
other oscillator is called a slave. In Thor, oscillator 1 is the master, i.e. this controls the base pitch of the oscillators,
and oscillators 2 and 3 are slaves.
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Mode
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Description
Band In this mode, the Oscillator knob controls bandwidth. Turned fully clockwise, the oscillator produces pure noise.
Turning the knob counter-clockwise gradually narrows the bandwidth until a pitch is produced. The pitch will
track the keyboard normally if the keyboard (KBD) knob is set fully clockwise.
S/H S/H stands for “sample and hold”, which is a type of random generator. The Oscillator knob controls the rate of
the sample and hold. With high Oscillator knob settings, it produces colored noise with a slightly “phased” sound
quality. With lower rate settings you can use the oscillator as a modulation source like a LFO with random values.
For example, if you modulate the pitch of another oscillator using S/H with a low Rate setting as the source, you
will get stepped random modulation of the pitch.
Static As the name implies, this can generate the sound of static interference if you use low Oscillator settings. The
Oscillator parameter controls Density, i.e. the amount of static. High Density settings generates noise.
Color This produces colored noise, which is basically noise where certain frequency areas are filtered, i.e. cutting or
boosting certain frequency areas in the noise. The Oscillator knob controls Color. With a maximum Color setting
you get white noise, and lower settings produces noise emphasizing lower frequencies.
White This produces pure white noise, where all frequencies have equal energy. There is no associated Oscillator pa-
rameter for White noise.
Master oscillator
Slave oscillator