User Manual

THOR POLYSONIC SYNTHESIZER
(RECORD+REASON)
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•Pulse
• Pulse and Sine
• Sine and flat (half sine)
•Saw x Sine
•Sine x Sine
•Sine x Pulse
The last three waveforms could be described “resonant”, as these originally were meant to simulate filter resonance.
They didn’t really do this very accurately, but nevertheless constituted an important part of the sound.
The Second waveform has the same available waveforms except the last three, and it can also be bypassed alto-
gether. You can combine waveforms freely, except it is not possible to combine two “resonant” waveforms.
FM Pair oscillator
As the name implies, this oscillator generates FM, where one oscillator (Carrier) is frequency modulated by a second
oscillator (Modulator). Although very simple to use (unlike most hardware FM synths), this oscillator can produce a
very wide range of FM sounds.
D The Carrier and Modulator selector buttons set the frequency ratio between these two oscillators (the range is
1-32).
The frequency ratio is what determines the basic frequency content, and thus, the timbre of the sound.
D The FM knob sets the amount of frequency modulation.
This is also the Modifier parameter. If FM amount is set to zero, there is no FM and the output will be a pure sine
wave.
• If you set FM Amount to zero and step through the values of the Carrier oscillator, you can hear that the pitch
is changed according to the harmonic series.
• Stepping through the Mod oscillator values will change the pitch in the same way, although FM Amount has to
be set to a value other than zero to be able to hear it.
Thus, 2:2 is the same wave shape as 1:1 but one octave higher in pitch, 3:3 is the same wave shape as 2:2 but a fifth
higher in pitch and so on.