Ring modulation – Waldorf Blofeld Keyboard User Manual

Page 45

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Sound Parameter

45

Blofeld User´s Manual

To create a common pitch vibrato that is controlled
by the modwheel, set Pitch Source to LFO1*MW
with Pitch Amount set to around +20.

To create a sound whose pitch glides in, set Pitch
Source

to a decaying Envelope with Pitch Amount

set to around –25.

w

If you want to modulate the pitch of individual
oscillators, you can do so with the Modulation
Matrix

, which can be accessed through the Matrix

section. See the respective section for details.

Pitch Amount

-64...+63

Sets the amount of pitch modulation for all oscillators.
Positive amounts will raise the pitch when positive
modulation is applied, e.g. by pressing aftertouch on the
keyboard. Negative amounts will lower the pitch when
positive modulation is applied.

Ring Modulation

The following parameters refer to the ring modulator.

Level

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 two
ringmodulated sine waves:

A Sine wave with frequency 1 ringmodulated with a Sine wave with

frequency 2.5 (1 octave + 4 semitones)

results in this wave

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