Waldorf M, Руководство пользователя

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Appendix
77 M Manual
A Short Introduction in Wavetable Synthesis
The sound generation of the wavetables in M is based on
wavetable synthesis.
The following overview explains how the wavetable syn-
thesis works:
A wavetable is a list consisting of 64 waveforms. Each
waveform is classified by its own very special sound cha-
racter. Some wavetables contain waveforms with a similar
sound character in between, others include waves with
extremely different timbres.
You will notice, that the upper three entries in the wave-
table (position 61, 62 and 63) consist of the classic analog
type waveforms triangle, pulse and sawtooth. These three
waves are identical in every wavetable. You can always use
these classic synthesizer waves, independent of which
wavetable is currently selected.
Both oscillators of one M’s voice use a common wavetable.
However each oscillator can play a different waveform
inside the list. E.g. oscillator 1 can play a sine wave from
position 1 of the list while oscillator 2 is playing a
sawtooth wave from position 63.
The main difference of wavetable synthesis in comparison
with other sound-generation principles is the ability to not
only to play one waveform per oscillator but also to step
through the wavetable via different modulations, thereby
creating wavetable sweeps. The results can be dramatic –
much more so than anything any sample playback-based
system could ever produce.
This principle offers powerful capabilities. To give some
examples:
•
Each note on a keyboard can access a different wave of
a wavetable.
•
An LFO can modulate the position within the wave-
table. You can create subtle to drastic sound changes.
•
User-selected controllers, such as the mod wheel, can
change the position within the wavetable. When you
turn the wheel while playing a chord, each note’s wave
will be modified instantly.
You should keep the following sentence in mind:
r
A wavetable is a list with two or more waves, among
which you can move at will.
Modulating Waves over time
The graphic below shows a wavetable with 60 waves and
some of its included waves from position 0 to 59 on the
vertical axis. The horizontal axis represents the audio