This is just a
simple 24
steps sequencer..
S1 to
S24
: 24 Knobs, to select the DC
voltages for each step (A red LED located on the top right of the knob
shows
when the step is activated)!
G1 to G24 : 24 ON/OFF Switches, to select the Gate output for each step (RI and BD Percussion accents).
Clock
input :: Selector switch for setting the kind
of clock needed .
CYC S: One-shot push-on switch for automated
"cycle RST ".
RST S: One-shot push-on switch for manual
RST.
Out: Push-on switch selecting the
normal output (Out) or inverted sequence output (Out-1).
Mode : Toggle switch to select
Binary
Sequencer (Bin) or Mini-Sequencer (Seq)
Note: It is
best to
manually reset (RST) the module before switching
from BIN to
SEQ and
vice-versa, because the two sequencers are set in parallel
and share the same pots!.
Seedable
Probability Generators (A-B)
Version :
1.3
Date
Created:
July 14, 2004
Author:
Lance
Putnam
ljputnam@umail.ucsb.edu
http://www.uweb.ucsb.edu/~ljputnam
Description:
Just a simple seedable random module.
INPUTS:
Gate
Upon a positive zero crossing,
the module will
output a random number.
Level
The range of random values.
0V - 10V -> [0V] -
[-5V,5V]
Seed
Seed value of internal random
number generator. It
will
assign a random seed if
set to 0.
Plant
Reinitialize the random number generator
with current
seed value. Not
applicable if seed=0.
OUTPUTS:
Output
The random value.
Notes:
In a
nutshell, the seed determines the specific sequence of random numbers
that are
output on successive gate signals.
If you are
using a seeded sequence of random numbers you can restart the
sequence
by sending a gate to the 'CYCLE' input.
Probability Generator A
A(x)Sd :
Knob to set the percentage of probability seed.(0=Full
randomness, 12
o’clock= 50% randomness,
5 o’clock no
randomness).
A(z)Lev : Bias Output level (Range) of
the
algorithmic generator.
Cyc : One-shot push-on switch for
automated "cycle" RST (Plant Reset).
Rst (Plant): One-shot push-on
switch
for manual RST of the algorithms.
Clock
input
: Selector to switch the types of
clock inputs (Clock, Dividers (D1,D2,D3;D4), Gate Arrays (GA1, GA2),KB,
C
or D).
Out : Push-on switch to select the
type
of outputs : A,A-1, Math, Math-1, Auto, Auto-1).(Default=A)
Probability
Generator B
B(y)Sd :
Knob to set the percentage of probability seed.(0=Full
randomness, 12
o’clock= 50% randomness,
5 o’clock no
randomness).
B(t)Lev : Bias Output level (Range) of
the
algorithmic generator.
Cyc : One-shot push-on switch for
automated "cycle" RST (Plant Reset).
Rst
(PLANT):
One-shot push-on switch for
manual RST of the algorithms.
Clock
input
: Selector to switch the types of
clock inputs (Clock, D1,D2,D3;D4, Gate Arrays GA1 and GA2, C, D)
Out : Push-on switch to select the
type
of outputs (B, B-1, Math, Math-1, Auto,
Auto-1).(Default=B!).
Note : The A and B
outputs can be further processed to include
mathematical expressions to fit your needs (the default expression is
(x+y)*(z+t). In that case, the pots labelled x,y,z and t will influence
the
output (set output switches to Math, Math-1)
A+B Math window
: Use this screen to type in your own Math expressions, but you have to
respect the format!)
Henon
Chaotic Generator
Author: Lance
Putnam
Description: The Henon equation, discovered by Michel Henon, is a model
of the
orbits of stars around their galaxies.
Henon Equation:
x(n+1) = 1 + y(n) - a * [x(n)]^2
y(n+1) = b * x(n)
The equation
exhibits both
chaotic and periodic behavior depending on the
initial values of x and y and the two constants, a and b. This makes it
well suited for algorithmic composition and other musical applications.
So, if you
ever wanted to
make genuine space music, here's your chance.
INPUTS : Gate
- Upon a
positive zero crossing, the module will
do another another iteration of the equation. This
will only work if the module is in 'Gated' mode.
Reset - Start
iterating
over again at x0 and y0. Works on
positive zero crossing.
x0 - Initial x
value. Any
change will cause a 'Reset'.
y0 - Initial y value. Any
change will cause a 'Reset'.
a - The
constant 'a' in the
Henon equation. Any change will
cause a 'Reset'.
b - The
constant 'b' in the
Henon equation. Any change will
cause a 'Reset'.
Mode - Switch
between
'Continuous' and 'Gated' mode.
'Continuous'
mode will
iterate at the sampling rate you
are working with (e.g. 44.1 kHz).
'Gated' mode
will iterate
upon receiving a gate signal.
OUTPUTS: x -
This is x(n+1)
in the Henon equation.
y - This is
y(n+1) in the
Henon equation.
PARAMS :
Normalize - When
'On' the outputs will be normalized to a
max/min value of +5V/-5V, respectively.
When 'Off'
output is normal
values.
Notes: You are probably wondering "What is this thing good for?!"
Here are some
ideas:
- Use in
'Gated' mode in
conjunction with LFOs for algorithmic composition.
Control the pitch of notes with x and the volume or some other
parameter
with y. You can also hook up an LFO to 'Reset' to play the same melody
periodically.
- Set to
'Continuous' mode
and create some strange periodic noises by
playing around with a and b. Great for industrial type sounds,
car engines, screeching, etc.
- Use an
oscillator to trigger
the gate at audio rates. This will give you
pitchable noise and other effects.
The behavior of the Henon Map basically falls into 4 categories:
1. Chaotic -
generates
noise and periodic noise
2. Periodic -
generates
tones
3. Fixed or
steady-state - comes
to rest after a certain amount of
iterations
4. Unbounded -
output goes
to infinity (both outputs will go to zero
if this happens)
**My
suggestion is that you
play around with a and b to get the behavior you
want and then change x0 and y0 to make slight
modifications/permutations.
Hen
(x):
Initial x0 value. Any change will
cause a 'Reset'.
Hen (y): Initial y0 value. Any change will cause a 'Reset'.
Hen(z) : The constant 'a' in the
Henon
equation. Any change will
cause a 'Reset'.
Hen(t) : The constant 'b' in the
Henon
equation. Any change will
cause a 'Reset'.
CYC: One-shot push-on switch for
automated "cycle" RST (Plant Reset).
Xbias : Selector to switch between
the
type of outputs : X,X-1, Math.
YBias: Selector to switch between
the
type of outputs : Y,Y-1, Math-1.
Clock
input
: Selector to switch the types of
clock inputs (Clock, C,D, D1, D2,D3,D4, KG, Gate Arrays GA1, GA2)
HenOut
:
Selector to switch the types of
outputs (Out, Out-1)
Henon+MATH (Use the text input screen to
type
in your own math expressions)
Note : The Henon
outputs can be further processed to include
mathematical expressions to fit all your needs (the default expression
is
(x+y)*(z+t). In that case, the pots labelled x,y,z and
t will influence
the output (set output switch to Math, Math-1). By
default the generator
is set internally to “Gated input”. You can change
it to “continuous” on the
internal module itself, but beware : this state might overload your
system!
Seedable
Probability Algorythm For Random Gates (C-D)
Module created
by Mr.Lance
Putnam
INPUTS :
Gate Upon a positive zero crossing, the module will
decide whether to pass on the gate signal depending
on the probability.
p The
probability that the
gate signal will be passed to
the output. 0V-10V = 0% - 100%
Seed : Seed
value of
internal random number generator. It will
assign a random seed if set to 0.
Plant (RST)
Reinitialize
the random number generator with current
seed value. Not applicable if seed=0.
OUTPUTS:
Output The gate signal passed on.
Notes:
Seeding is useful if you want to repeat the same set of probabilities.
In a
nutshell, the seed determines the specific sequence of random numbers
that
make the decisions for the probabilities.
If you are
using a seeded
sequence of probabilities you can restart the
sequence by sending a gate to the 'Plant' input.
CProb
/ DProb
: Knobs used to set the probability
seeds.
CSeed
/D Seed:
Seed value of internal random
generator.
Cyc : One-shot push-on switch for automated
"cycle RST " (Plant Reset).
RST : One-shot push-on switch for
manual RST of the algorithms.
SAMPLE
& HOLD
11SH : Knob setting the Sample
&
Hold initial frequency.
PW : Knob setting the Sample
&
Hold Pulse-Width for all waveforms, except noises.(This knob affects
the tempo of the S&Hold.
Pha : Knob setting the phase of
the
Sample & Hold (for all waveforms except noises).
S&HLev : Knob setting the Sample
&
Hold output level (Range).
Cyc :
: One-shot push-on switch
for automated "cycle RST "
.
Sync/Unsync : Push-on/off switch for Gate
syncing/unsyncing (default is sync ON).
ClockSync : Switch Selecting which clock
will
soft sync the S&H (Clk, Step, Div,KG, Gate
Arrays GA1 and GA2, C, D)
Sync
Division : switch
selecting the division of the
ClockSync by a factor of n (from 1 to 8)
LED : Led showing the Sync
division
state.
Waveforms
: Selector
switch to select the
different waveforms (Analog input).
Clock
input
: Selector switch to select the
clock input (Logic input)
S&H
Out:
Push-on switch for selecting the
output mode : OUT / OUT-1(Default is Out).
MASTER
CLOCK
MClock: Knob for setting the Master
Clock
initial frequency.
Cycle : Knob for setting the automated
'cycle reset' impulse for various modules reset.(Seq, A-B-C-D
Probability
Gen., Henon Gen.).
Note
:By
default, the clock has been set
to Hz, but you can change it internally to
BPM!
Rst: One-shot push-on switch for
the
Master Clock manual RST..
As
said earlier, Tacsynth is a monophonic
synth by design. However, one can achieve complex polyrhytmic rhythms
by using
a combination of sophisticated divisions of the master clock!
PL1-2 Mode : a selector switch can select a frequency modulation of the pulse length by LFO9 and/or LFO10 (Default is PL)
Master Clock
Main Divider (In 1-2) : Selector to switch between
two
functions : the Master CLK (according to
settings of Pulse length PL1 to 16) or CLK : n
(this division slows down the clock from 1/4th
to 1/96th of
the clocks fundamental frequency,before entering the dividers D1 and D2!
CLOCK
DIVIDER D1 and D2.
D1: (Top Left): Selector to switch
between initial
clock frequency(Clk) or Division of the clock by n
(Div).
D2: (Bottom Left): Selector to
switch
between initial clock frequency(Clk) or
Division of the clock by :n (Div)
Div1
by n: Selector
switch to set the clock’s
division of D1 by a factor of n
Div2
by n : Selector
switch to set the clock’s
division of D2 by a factor of n.
Master Clock
Main Divider (In 3-4) : Selector to switch between
two
functions : the Master CLK (according to settings of Pulse
length PL1 to 16) or CLK : n
(this division slows down the clock from 1/4th
to 1/96th of
the clocks fundamental frequency ,before entering the dividers D3 and
D4!
CLOCK
DIVIDER D3 and D4.
D3 (Top Right): Selector to switch
between
initial clock frequency(Clk) or Division of the
clock by n (Div).
D4 (Bottom Right): Selector to
switch
between initial clock frequency(Clk) or Division of
the clock by n (Div).
Div3
by n: Selector
switch to set the clock’s
division of D3 by a factor of n
Div4
by n :
Selector switch to set the clock’s
division of D4 by a factor of n.
MIXED
GATES OUTPUTS
ON/OFF SELECTORS (OUT 1 to OUT 4)
OUT1
(Top Left)
: When activated (green light is ON)
processed output D1 is mixed (ORed) into the output
Gate Array
GA1.
OUT2
(Bottom Left) : When activated (green light is ON)
processed output D2 is mixed (ORed) into the output
Gate Array GA1..
OUT3
(Top Right)
: When activated (green light is ON)
processed output D3 is mixed (ORed) into the output
Gate Array
GA1.
OUT4
(Bottom Right) : When activated (green light is ON)
processed output D4 is mixed (ORed) into the output
Gate Array GA1.
C: When activated (green light
is ON)
the processed output of probability gates C is
mixed (ORed) into the
output Gate Array GA1.
LED :
A red LED under the C selector
shows the rhythm of generator C.
GA1 : Gate Array of mixed Outputs
D1 to
D4, which are sent to all Envelope Generators gate inputs.
Master
Clock Main Divider (In 5-6) : Selector to switch between
two
functions : the Master CLK (according to settings of Pulse
length PL1 to 16) or CLK : n
(this division slows down the clock from 1/4th
to 1/96th
of the clock's fundamental frequency!
CLOCK
DIVIDERS D5 TO D6
D5: (Top Right): Selector to switch
between initial
clock frequency(Clk) or Division of the clock by n
(Div).
D6: (Bottom Right): Selector to
switch
between initial clock frequency(Clk) or
Division of the clock by :n(Div).
Div5
by n: Selector
switch to set the clock’s
division of D5 by a factor of n
Div6
by n : Selector
switch to set the clock’s
division of D6 by a factor of n.
Master
Clock Main Divider (In 7-8) : Selector to switch between
two
functions : the Master CLK (according to settings of Pulse
length PL1 to 16) or CLK : n
(this division slows down the clock from 1/4th
to 1/96th
of the clock's fundamental frequency!
CLOCK
DIVIDERS D7 TO D8
D7 (Top Right): Selector to switch
between initial clock frequency(Clk) or Division of
the clock by n (Div).
D8 (Bottom Right): Selector to
switch
between initial clock frequency(Clk) or Division of
the clock by n (Div).
Div7
by n:
Selector switch to set the clock’s
division of D7 by a factor of n
Div8
by n :
Selector switch to set the clock’s
division of D8 by a factor of n.
MIXED GATES
OUTPUTS ON/OFF SELECTORS (OUT 5 to OUT 8)
OUT5 :
When activated (green light is ON) processed output
D5
is mixed (ORed) into the output array Gates GA2.
OUT6 : When activated (green light
is ON)
processed output D6 is mixed (ORed) into the output
array Gates GA2..
OUT7 : When activated (green light
is ON)
processed output D7 is mixed (ORed) into the output
array Gates GA2..
OUT8 : When activated (green light
is ON)
processed output D8 is mixed (ORed) into the output
array Gates GA2
D: When activated (green light
is ON)
processed output of probability gates D is mixed
(ORed) into the output
array Gates GA2.
LED :
A red LED under the D selector
shows the rhythm of generator D.
GA2 : Gate Array of mixed Outputs
5 to 8,
which are sent to all Envelope Generators gate inputs.
Rhythm
selection :
For
Example:
To obtain a rhythm in ¾ :
Evidently, try
to combine
other divisions to obtain very complex rhythms.
Low
frequency oscillators
(LFO)
Vib : This Lfo is preset
internally
to 6.5 Hz and sent to each individual VCO (Vibrato) :it is not
accessible from
the patchboard!
9Lfo : Knob to set the initial
frequency
of Lfo9 (range is -10 to 0V)
9PW : Pulse-Width of LFO9.
9OUT: Level output of LFO9
9Waveforms :Selector switch to define the
waveform of LFO9.
Output: Selector switch to define the
type
of outputs : (Default=Out) or inverted output (Out-1).
9Sync10 : When activated (light is ON), LFO 10 is synced to LFO9 fundamental frequency .
9FM>10 : When activated (light is ON)
the level output of LFO9 controls the frequency of LFO10.
10Lfo : Knob to set the initial
frequency
of Lfo10 (range is -10 to 0V)
10PW : Pulse-Width of LFO10.
10OUT: Level output of LFO10
10Waveforms :Selector switch to define the
waveform of LFO10.
Output: Selector switch to define the
type
of output (Default= Out) or inverted output (Out-1).
10FMClk: Toggle switch to send LFO 10
output to Frequency modulate (FM) the Master
Clock’s Initial frequency.
PERCUSSIONS
SN: Sensitivity Knob for the
Snare
drum noise input.
D: Envelope Decay of snare drum.
Color: Timbre color of snare drum
Gn : Gain of snare drum output.
Mode: Knob setting the snare drum
control inputs (HH, C, D)
PercGn: Knob setting the Percussions
Master Gain output.
RST: One shot switch for manual
Reset.
BD (Bass drum kick) input Level knob.:
BD Color : knob for selecting the BD initial frequency (Default is 12 o'clock)
BD SEQPi : knob for selecting the BD frequency bias by Seq pitch (Default is OFF =7 o'clock)
BD
input modes: Selector to select between SN,
RI, K4(4 Beats),GA1,SEQG or -(nothing)
BD Gn: Gain output Knob.
RI: Sensitivity Knob for the Ride
Cymbal noise input.
D: Envelope Decay of Ride cymbal.
Color: Timbre color of Ride Cymbal
Gn : Gain of ride cymbal output.
RI
DivA:
Ride cymbal first Divider by n
RI
clock input
: Selector to select the clock
input (RI, D1+D2, HH, C, D, Sequencer individual gates =SEQG (The
default is RI)
RI
DivB:
Ride cymbal second Divider by n
HH:
Sensitivity Knob for the High-Hat
Cymbal noise input.
D: Envelope Decay of Hi-Hat
cymbal
Color: Timbre color of High-Hat
cymbal.
Gn : Gain of High-Hat cymbal.
HH
DivA:
High-Hat first Divider by n.
HH
clock input
: Selector switch to
select the clock input (HH, D1+D2).
HH
DivB:
High-Hat second Divider by n.
M.I.D.I (Not all functions are
available!)
Midi
to CV/Gate
is enabled internally on MIDI to CV
module!
MIDI
Channel 1
is set internally as default.
Mono
mode
is set internally by default.
Retrigger is set internally by default
Keyboard
: A M.I.D.I
touchboard is located under the main patchboard!
Note: External
keyboard
CV input is selected with VCO’s rotary
switch ( 5 o’clock), while
the Keyboard Gate (KG) is selected at the envelopes
gates inputs.
JOYPOTS
BIAS -/+
-Bias+: Knob for selecting the DC
range of
the two individual joysticks X and Y
Master X/Y Joystick (Center spring = 0 volt!)
VCO1-4 : Push ON/OFF Switch for
applying a
bias DC voltage to VCO 1-4 initial frequency.
VCO5-8 : Push ON/OFF Switch for
applying a
bias DC voltage to VCO 5-8 initial frequency.
VCF : Push ON/OFF Switch for
applying a
bias DC voltage to all VCF's initial frequency
Clk : When activated (ON)
the
–Bias+ knob controls the clock frequency.
JOY X (Left) : DC Bias -/+ Volt Knob
for various
function controls
(stretching the envelope Attack level(A) or Decay (D),
S&H
and LFO9 inputs (the functions have to be
activated= ON).
JOY Y (Right): DC Bias -/+ Volt Knob for various function
controls
(stretching the envelope Sustain level (S) or
Release (R), Rectifiers
and LFO 10 inputs (the functions have to be
activated= ON).
T- : One shot push-on switch for
momentarily
disabling the Master Clock.
T+ : One shot switch for manual
triggering of envelope generators.
PATCH
PROGRAMMER
Select an
unused patch
number in the bank! Proceed
in building
your patch with the modules you want.. Tweak your sounds with great
care! Once
you have set-up the sounds you want, you can save all knobs and
switches
positions in the patch programmer. To do that, click on File copy +
patch
number! .
CONTAINER
To
respect the Synthedit
philosophy, the whole structure of the synth has been put inside a
container.
To get to this container page, minimize all screens (patchboad, structure) .
I have added a
Reverb module
for Reverberation effects : you can delete it if you don't need it!.
Are you interested in trying this mono synth prototype
configuration?
<mailto:analogcottage@yahoo.com>and I will send you a
copy of the source file.
