Architecture of
Ultra Analog VA-3
11
2
Architecture of
Ultra Analog VA-3
2.1
Signal Flow of the
Ultra Analog VA
Engine
The general architecture of the
Ultra Analog VA
synthesis engine is presented in Figure 1. The pri-
mary sound sources of the synthesizer are two oscillators and a noise generator. These sources are
mixed before being sent to two different multi-mode filter modules in series with an amplifier.The
signal from these two lines is then mixed and sent to a multi effects module. Note that the two
filtering lines are not totally independent since the output of the filter module from the first line can
be sent to the input of the filter on the second line.
Figure 1: General signal flow of
Ultra Analog VA-3
.
This configuration is very flexible because, depending on the type of mixing applied, sources
can be treated separately or in combination. For example, when the filters each receive signal from
distinct sources, the right and left information from each source is preserved until the very end of
the signal path. Sources can therefore be moved and positioned independently in the stereo space
using the panning control on each of the amplifiers. On the other hand, combining the sources at
the mixer level results in rich and complex tonal structures.
