Sound Parameters – Mixer/Routing Section
Waldorf microQ User´s Manual 70
• Noise selects the Noise Generator as input for the respective filter.
• ExtLeft selects the Left input signal as input for the respective filter.
• ExtRight selects the right input signal as input for the respective filter.
• ExtL+R feeds the summed signal of the left and right input into the respective filter.
Noise needs CPU Power which results in decreased polyphony. If you don´t need the noise
generator set N/E Select F1/F2 feed not to Noise.
Ringmod !Ring Bal
000 ! F1 64
RingMod - Ringmodulation 0…127
Volume of the ring modulation between Oscillator 1 and 2. From a technical point of view ring
modulation is the multiplication of two oscillators’ signals. The result of this operation is a waveform
that contains the sums and the differences of the source frequency components. Since the ring
modulation generates disharmonic components, it can be used to add metallic distorted sound
characteristics. This is useful e.g. when generating synth percussion. Please note that in a complex
waveform all harmonic components behave like interacting sine waves, resulting in a wide spectral
range of the ring modulated sound. The following pictures show the results of a saw wave
ringmodulated with a square wave and two ringmodulated sine waves:
This Sawtooth wave ringmodulated with this Square wave results in this wave
Picture 16: Ring Modulation of a Sawtooth and a Square wave with different frequencies.
A Sine wave with frequency 1 ringmodulated with a Sine wave with
frequency 2.5 (1 octave + 4 semitones)
results in this wave
Picture 17: Ring Modulation of two Sine waves with different frequencies.
Ring Modulation can result in unwanted low frequencies when the pitches of oscillator 1 and 2
don’t differ very much. This is logical because when you use i.e. one oscillator set to 100Hz
and the second set to 101Hz, the resulting ring modulation is 201Hz and 1Hz, and 1Hz is very
low.
Ring Modulation can be very interesting when a slow pitch modulation is applied to one
oscillator, i.e. a decaying Envelope. This creates spacy effect sounds.
For an E-Piano sound, you might apply Ring Modulation when one high pitched oscillator’s
Keytrack is lowered to i.e. 50%.
If you turn down the pitch of one oscillator markedly, you can get an effect very similar to
Amplitude modulation. Use this for sounds with a periodic element if you wish.
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