The OTHER WAVEFORM OUTPUTS
In addition to the FINAL out there are several wave shapes that are all tapped or derived from the oscillator
cores. Except for the VCO A SAW and VCO B SQUARE, these signals are all around 10V peak to peak and
centered around 0V (bi-polar).
The SINE wave is derived from the TRIANGLE core of both oscillators and is provided as an output for both
VCO A and B because it is great for blending with signals of greater harmonic content in order to strengthen
the fundamental. The SINE shape has almost no harmonics, so it is also a good starting point for creating
complex FM sounds because the sidebands introduced through FM will not be obscured by harmonics
present in the signals utilized.
For VCO A the TRIANGLE shape is tapped from the core of the oscillator. The TRIANGLE is especially
useful for modulation of the SHAPE parameter. The narrower top and bottom portions of the waveform let
the SHAPE circuit breath a bit more than the SINE wave and the result is that deeper modulation is possible
before complete saturation of the SHAPE circuit occurs. The TRIANGLE shape is also a great signal to tap
when performing Hard SYNC. The small amount of additional harmonics makes the SYNC process more
audible (than it will be when using the SINE), without getting quite as aggressive as the SAW shape. Like
the SINE wave, the TRIANGLE shape is also excellent for blending with signals of greater harmonic content
in order to strengthen the fundamental.
VCO A also offers a unique SAW shape that is derived from the TRIANGLE core. It is not the typical saw
waveform as it has a stronger fundamental then is usually heard in a sawtooth shape. This waveform is
selected for VCO A in order to provide a unique response to the harmonically rich FINAL OUT signal of VCO
B. The SAW shape will carry the harmonics and sidebands introduced through Hard SYNC and FM with
greater presence then the TRIANGLE or SINE shapes. The end result is that the SAW will be the most
aggressive signal when using Hard SYNC or FM. The SAW shape is also a good alternative to the SINE
shape utilized throughout the MOD Bus. Patching the SAW to the EXT. SouRCe Input of the MOD Bus with
yield a completely different set of timbres. Especially the FOLD circuit will respond wonderfully to the more
aggressive SAW shape. Finally, SAW shape is also excellent for patching Subtractive synthesis sounds.
In addition to the SINE shape, VCO B offers the FINAL OUT (discussed at length in the MOD Bus and
Timbre Shaping Sections) and an Asymmetrical SQUARE waveform that is tapped off the core of the oscilla-
tor. The SQUARE is not AC coupled and it therefore has very steep slopes and hard edges. The asymmetri-
cal shape was chosen so that when blended with symmetrical signals, it is possible to achieve asymmetrical
clipping of those signals at the input of a filter or summing stage. SQUARE is the waveform of choice for
performing eXternal LOCK patches between multiple DPOs where the chain of command is passed from
one DPO down to the next. Like the SAW, the SQUARE shape is also very useful for performing Subtractive
synthesis.
Summary of Contents for DPO
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