This is the description of the
PPG Wave 2.2 wavetables as used in the Microwave II/XT.
(Plus Wavetable 64).
Harmonics
1-8 very strong, simulation of a resonant filter,wave number 00 is a sine wave.
Similar to
wavetable 00, but with additional higher harmonics, dual VCF simulation.
Similar to
two previous wavetables, but also good for vibes, bells, tubular bells, and so
on.
Sine-to-rectangular
sweep, low-resonance VCF simulation, clarinette and flute sounds.
Waves 00-47
feature very high harmonics in progressively greater amplitudes. Waves 47-59
continue to add high harmonics but at a faster rate. Also useful for delay
effects and church bells.
Very high
harmonics are emphasized, effects similar to wavetable 15, but more
mixture-like.
Sine-to-ramp
sweep, low-resonance-VCF effects, also good for woodwinds.
VCF sweep
without resonance, also useful for woodwind sounds.
Highpass
VCF simulation without resonance. Wave 00 has little or no fundamental. Wave 25
has fundamental at maximum amplitude. Useful for dark percussive strings, bass
with click-like attack.
Formants
are strong middle-range harmonics, useful for ring-modulation and vocal sounds.
Similar to
wavetable 09.
Low
formants. Wave 00 is dark, 32 is bright, 59 is dark.
High
formants that sweep.
Very strong
high-order harmonics, the fundamental is weak. Useful for bright percussive
stringed keyboard instrument sounds like clavichord, harpsichord, and so on.
When swept, you get an amplitude modulation effect. Wave 00 is maximum
amplitude, 24 is minimum amplitude, 59 is maximum. Use great detuning, upper
waves and dissonant low chords for noise effects.
Several
organ registers. Sine, Hammond, Lowery, Church organs.
Harmonics 2
+ 3 to sawtooth sweep. Useful for harmonium, accordian, harmonica sounds.
Wild amplitude
modulation effects when swept. Several peaks and dips in amplitude.
Wave 00
features the fundamental and second harmonic. Wave 14 is the fundamental alone.
Wave 40 has high harmonics. Wave 59 is the fundamental alone.
When swept
produces high-low-high harmonic sweep effect.
Waves 00-32
are stationary waveforms with string upper harmonics and a few lower harmonics.
Wave 59 has no fundamental.
Fast
discrete changes of low and high harmonics for sample and hold effects. Wave 00
is a sine wave.
Sine wave
to high frequency formants.
This
wavetable is particularly suited for echoing effects. Waveforms vary from
original attack plus one delay, to two colored delays. Wave 00 is a sine wave.
Strong high
harmonics.
Stationary
organs. If swept produces ascending high harmonic sweeps.
Waves 59 to
49 go from bright to sine wave. 48 to 33 have a colored delay. 33 to 18 are sinewaves.
17 to 00 have a colored delay echo.
Variations
on sawtooth waves is strong, bright formants. Good for brass sounds.
Formant
sweeps. When keyboard is used to control the waves vocal and choir sounds can
be produced.
Phasing
sawtooth waves. Useful for ensemble string sounds.
Square to
rectangular to narrow pulse waves. Sweeps produce pulse-width modulation
effects.
Description
by Wolfram Franke (Dec. 1999):
"The
wavetable is an analysis of a
male choir sample I did 5 years ago for the Wave. The original choir pitch
was F 1 and the Wave transformed it so that it generates an equal formant
spectrum through the whole keyboard range."