So
far this is only a collection of thoughts for a new module ! No guarantee
that this module will ever be manufactured !
An outline of the main points:
-
A module that contains two (maybe more)
voltage controlled low frequency oscillators with the frequencies
derived from a common source
-
Triangle, rising and falling sawtooth,
and rectangle outputs for each LFO (maybe some waveforms will be
omitted or replaced by others)
-
One common control and CV input for
basic frequency for both LFOs
-
Single controls and CV inputs that are
used to set the dividing factor (e.g. 1...16) of the corresponding LFO
in relation to the basic frequency. Example: Set to 1 -> LFO has
the max. frequency defined by the common control, set to 2 -> half
the master frequency, set to 3 -> third of the master frequency and
so on).
-
Master Reset input: resets all LFOs
-
Single reset input for each LFO: resets
only the LFO in question
-
Expected master frequency range about
0.1 Hz .... 50Hz, expected max. dividing factor: 16 (without
obligation, will depend upon our first experiments)
-
The frequency relation between each LFO
and the master frequency is always integer (1, 2, 3, ....).
Consequently all LFOs are in sync. Example: LFOs has the frequency
dividing factor 1, LFO2 = 8, one period of LFO2 corresponds exactly
to 8 periods of LFO1, can be used e.g. for synced modulations,
rectangle output of LFO1 can e.g. be used to trigger an ADSR so that
e.g. 8 ADSR envelopes fit exactly into one triangle or saw period of
LFO2). The single reset inputs can be used to "phase shift"
the LFOs against each other. The common reset input can be used to
restart all LFOs at the same position.
-
additional ideas: CV inputs for
"phase shift" of each LFO instead of single reset inputs, CV input for waveshape (falling
saw - triangle - rising saw) instead of triangle and falling/rising
saw outputs (simultaneously PWM of rectangle output), different
waveform outputs for different LFOs (e.g. all waveforms only for LFO1,
reduced number of waveforms for LFO2 and maybe LFO3, LFO4). We are not
sure which of these ideas/functions can be realized and which make
sense after all !
-
Because of the complexity of the
functions the module will be digital (8 bit ADCs for the CV inputs -
microcontroller - 8 bit DACs for the outputs). A pure analog solution
of all these functions - especiall the exact sync and phase shift
features - seems to be impossible (at least at a reasonable price)
The sketches below show different
behaviours of 2 LFOs with frequency relation 1:2 and master resp. single
reset.
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Preis: Euro
?.00 mit roten LEDs
(Standardversion), Euro ?.00 mit blauen
LEDs (Sonderversion,
der Aufpreis pro blauer
LED beträgt 2.00 Euro)
leferbar
ca. ?
Price: Euro ?.00 with red
LEDs (standard
version), i.e. about
US$ ?.00, resp. Euro ?.00 with
blue LEDs
(special version),
i.e. about
US$ ?.00, (2.00 Euro
additional price for each blue
LED)
The price in US$
depends upon the exchange rate between Euro and US$ at the payment day)
available about ?
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