Pw-Orig; Pw-Sqeez; Pw-Asm [Warp]; Harmonic - Ashun Sound Machines HYDRASYNTH Owner's Manual

PWM parameter Range
Ratio
Depth
Feedback
Custom Edit
(PW-ASM only)
Dry/Wet

PW-Orig

This is the "vintage" PWM used by many
analog polysynths in the '70s and '80s: a
waveform is fixed at its center and both of
its edges are moved to compress or expand
its width. The PWM source is often an LFO,
though an Envelope or other sources can yield
excellent results.

PW-Sqeez

This form of Pulse Width modulation grabs the
start and end points of the modulation and
then squeezes them to the right. It might help
to think of this as "time-warping" a waveform:
It makes the oscillator go slow at first and then
go fast, all in the space of a single cycle.

PW-ASM [Warp]

PW-ASM mode divides the selected waveform
into 8 sections that are framed by Warp
points. The values chosen for each Warp point
determine how warped each section of the
waveform can become.
Here's an example of PW-ASM mode in action.
1. Start with an initialized patch (press
[INIT] twice).
2. Access [OSC 1] and select the sine wave.
3. Access [MUTANT 1] and select PW-ASM
mode.
4. Set Mutant 1 Depth to 128.0 and Dry/
Wet to 100%.
5. Press Control button 7 to access Custom
Edit.
6. Hold a note and turn Control knob 2
slowly.
0.250-64.000 in
varying increments
0-128 in increments
of 0.1
0-150%
(access)
0-100%
Description
How many times PWM happens in a single cycle.
Hold [SHIFT] to jump by whole numbers.
Controls harmonic range of PWM
Feeds the PWM output back into itself
Press Control button 7 to access Warp points.
(See PW-ASM [Warp] section.)
Mix raw waveform + PWM result; 100% = pure
Mutant
7. Listen and watch the display as Warp2
changes from 0 to 128 and back.
Note how the waveform is affected only
in one specific area (i.e., Warp point 2).
8. Repeat steps 6 and 7 with one or more
Warp points at various values.
9. Also try different settings for Ratio,
Feedback, and Dry/Wet. The sonic
potential is nearly limitless.
PW-ASM mode is actually a form of Frequency
Modulation (FM). It allows you to draw your
own modulator waveform by selecting
different values for each of the 8 Warp points.
Construct a slope, a valley, a mound, jagged
peaks, pseudo-random, etc.; your design will
become an FM source (i.e., the modulator).
Each Warp point can be a destination
in the Mod Matrix, so timbral changes
can be as subtle or wild as you like. For
example, use synced LFOs as mod
sources and various Warp points as
destinations.

Harmonic

At its maximum Depth and impact (100% wet)
the Harmonic mutator emphasizes individual
harmonics in a waveform and de-emphasizes
the others. Its effect is heard more obviously
on waveforms rich in harmonics, like a
sawtooth wave, than on a simpler waveform
such as a sine wave.
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