analogue solutions
Leipzig
e&oe (c) 1-11-08
7
CIRCUITS IN DETAILS
Here follows details on all the sockets and controls, with brief simplified explanations
of what the circuits do. We have not gone into technical details on how and exactly what
each circuit does but tried to explain each control's function and effect.
Anyone who has used synthesisers before should be familiar with the terms used and
therefore be able to predict their behaviour and how they affect the sound. The best way
to learn how to use Leipzig is to go straight ahead and play with it. Reading of this manual
may only be neccessary for finer operational detail.
VCO 1 & 2
The voltage controlled oscillators
(VCOs 1 and 2) produce the raw audio
waveform usually used as the initial source
for sound creation. They provide cyclic audio
waveforms that can be pitched. VCOs usu-
ally receive treatment from the VCF to turn
their basic tones into pleasant sounds.
TUNE
Left TUNE is a master tune affecting BOTH
oscillators.
Right TUNE is a detune affecting only oscil-
lator 2.
The detune TUNE control can be used for
playing VCO2 at intervals, like, say, a 3rd
up from VCO1.
GLIDE
Two independent GLIDE controls (por-
tamento) for the oscillators. Each time you
play a new note, the pitch will glide from
the last note to the new note. The GLIDE
control alters the speed. At minimum there
is no glide.
Pulse Width
(Just below VCO1 GLIDE control). For
VCO1 only. This alters the pulse width for
VCO1's square wave (alters the 'duty cycle').
If you do not understand this, don't worry
about it! Just turn it and hear how the tone changes.
