Update: 2020-06-15
SyncSawSynth is a 32 voice polyphonic synthesizer using up to 10th order PTR sawtooth oscillator. Just a basic synthesizer but very easy to make a noise similar to low battery sound of some toys.
The package includes following builds:
macOS build isn’t tested because I don’t have Mac. If you found a bug, please file a issue to GitHub repository or send email to ryukau@gmail.com
.
Linux build is built on Ubuntu 18.0.4 and tested on Bitwig 3.1.2 and Reaper 6.03. Bitwig 3.1.2 seems to have a bug that occasionally blackouts GUI.
Place *.vst3
directory to:
/Program Files/Common Files/VST3/
for Windows.$HOME/.vst3/
for Linux./Users/$USERNAME/Library/Audio/Plug-ins/VST3/
for macOS.DAW may provides additional VST3 directory. For more information, please refer to the manual of the DAW.
Extract preset zip, then place preset directory to the OS specific path:
/Users/$USERNAME/Documents/VST3 Presets/Uhhyou
$HOME/.vst3/presets/Uhhyou
/Users/$USERNAME/Library/Audio/Presets/Uhhyou
Preset directory name must be the same as the plugin. Make Uhhyou
directory if it does not exist.
If DAW doesn’t recognize the plugin, try installing C++ redistributable (vc_redist.x64.exe
). Installer can be found in the link below.
On Ubuntu 18.0.4, those packages are required.
If DAW doesn’t recognize the plugin, take a look at Package Requirements
section of the link below and make sure all the VST3 related package is installed.
REAPER on Linux may not recognize the plugin. A workaround is to delete a file ~/.config/REAPER/reaper-vstplugins64.ini
and restart REAPER.
At first time, create color config file to:
/Users/USERNAME/AppData/Roaming/UhhyouPlugins/style/style.json
on Windows.$XDG_CONFIG_HOME/UhhyouPlugins/style/style.json
on Linux.
$XDG_CONFIG_HOME
is empty, make $HOME/.config/UhhyouPlugins/style/style.json
./Users/$USERNAME/Library/Preferences/UhhyouPlugins/style/style.json
on macOS.Below is a example of style.json
.
{
"fontPath": "",
"foreground": "#ffffff",
"foregroundButtonOn": "#000000",
"foregroundInactive": "#8a8a8a",
"background": "#353d3e",
"boxBackground": "#000000",
"border": "#808080",
"borderCheckbox": "#808080",
"unfocused": "#b8a65c",
"highlightMain": "#368a94",
"highlightAccent": "#2c8a58",
"highlightButton": "#a77842",
"highlightWarning": "#8742a7",
"overlay": "#ffffff88",
"overlayHighlight": "#00ff0033"
}
Hex color codes are used.
First letter #
is conventional. Plugins ignore the first letter of color code, thus ?102938
, \n11335577
are valid.
Do not use characters outside of 0-9a-f
for color value.
fontPath
: Absolute path to *.ttf font file. Not implemented in VST 3 version.foreground
: Text color.foregroundButtonOn
: Text color of active toggle button. Recommend to use the same value of foreground
or boxBackground
.foregroundInactive
: Text color of inactive components. Currently, only used for TabView.background
: Background color.boxBackground
: Background color of inside of box shaped components (Barbox, Button, Checkbox, OptionMenu, TextKnob, VSlider).border
: Border color of box shaped components.borderCheckbox
: Border color of CheckBox.unfocused
: Color to fill unfocused components. Currently, only used for knobs.highlightMain
: Color to indicate focus is on a component. Highlight colors are also used for value of slider components (BarBox and VSlider).highlightAccent
: Same as highlightMain
. Used for cosmetics.highlightButton
: Color to indicate focus is on a button.highlightWarning
: Same as highlightMain
, but only used for parameters which requires extra caution.overlay
: Overlay color. Used to overlay texts and indicators.overlayHighlight
: Overlay color to highlight current focus.Knob and slider can do:
Right clicking on controllable object popups a context menu provided by DAW.
The peak value of gain envelope is determined by the length of attack. When gain envelope attack is small, the peak may be a bit higher than usual.
When turning Dirty Filter
on, a glitch may pops at the timing of note on.
Some parameter configuration leads to massive DC offset. To be stay safe, it’s better to insert high-pass filter after SyncSawSynth. Monitoring output with oscilloscope is recommended.
An oscillator of SyncSawSynth internally have 2 separate oscillators. One is for generating waveform, and other is to trigger hardsync. In term of hardsync, waveform generator is called slave and oscillator used to trigger is called master.
If the image is small, use Ctrl + Mouse Wheel or “View Image” on right click menu to scale.
Diagram only shows overview. It’s not exact implementation.
Oscillator gain. Range is 0.0 to 1.0.
Oscillator pitch. Range is -24.0 to 24.0. Unit is semitone.
The value will be floored. For example 6.3 becomes to 6 and -11.5 becomes to -12.
Oscillator pitch. Range is -100.0 to 100.0. Unit is cent.
Meaning of the value of Sync
will be changed by SyncType
. Range of Sync
is 0.01 to 16.0.
SyncType
has 4 options.
Off
Ratio
Fixed-Master
Fixed-Slave
Option Off
turns off hardsync by setting master frequency to 0 Hz. However, if the value of Osc*->Sync1
is greater than 0, phase of master will be moved and possibly triggers hardsync. When SyncType
is Off
, the value of Sync
won’t be used.
Option Ratio
sets note frequency to master frequency. Slave frequency will be the value of Sync
multiplied by master frequency. Also the destinations of modulation from To Freq/Sync
will be swapped.
Option Fixed-Master
sets note frequency to slave frequency. Master frequency will be only determined by the value of Sync
.
Option Fixed-Slave
sets note frequency to master frequency. Slave frequency will be only determined by the value of Sync
.
Below is equation of conversion of the value Sync
to freqeuncy used for Fixed-Master
and Fixed-Slave
.
frequency = 2 * Sync^3
Oscillator waveform.
0 to 10th order PTR sawtooth oscillator and sine wave are available.
Oscillator phase. Range is 0.0 to 1.0.
If Lock
is checked, phase will be reset for each note on.
If Invert
on Osc2
is checked, phase will be inverted by changing sign of the output of Osc2
.
When checked, add same tone with different phase for each note. CPU load will also be doubled.
Maximum polyphony. Lowering the number of this option reduces CPU load.
Modulation from Osc1
output to Osc1
master frequency. Range is 0.0 to 1.0.
Modulation from Osc1
output to Osc2
slave frequency. Range is 0.0 to 1.0.
Modulation from Osc2
output to Osc1
master frequency. Range is 0.0 to 1.0.
Attack of modulation AD envelope. Range is 0.0 to 4.0. Unit is seconds.
Equation of AD envelope.
env(t) := t^a * exp(-b * t)
t: time.
a, b: some constants.
Curve of modulation AD envelope. Range is 1.0 to 96.0.
The length of decay is depends on the value of Curve.
Modulation from AD envelope to Osc1
slave frequency. Range is 0.0 to 16.0.
Modulation from AD envelope to Osc1
master frequency. Range is 0.0 to 16.0.
Modulation from AD envelope to Osc2
slave frequency. Range is 0.0 to 16.0.
Modulation from AD envelope to Osc2
master frequency. Range is 0.0 to 16.0.
LFO Frequency. Range is 0.01 to 20.0. Unit is Hz.
Ratio of LFO and pink noise. Range is 0.0 to 1.0.
If the value is 0.0, the output becomes LFO only. If the value is 1.0, the output becomes pink noise only.
Note that modulation of pink noise causes some nasty spikes. To avoid spikes, set the value of To Freq/Sync
to lower than 1.0. Spike is clipped to avoid exceeding 0dB.
Modulation from LFO/Noise to Osc1
slave frequency. Range is 0.0 to 16.0.
Modulation from LFO/Noise to Osc1
master frequency. Range is 0.0 to 16.0.
Modulation from LFO/Noise to Osc2
slave frequency. Range is 0.0 to 16.0.
Modulation from LFO/Noise to Osc2
master frequency. Range is 0.0 to 16.0.
Gain of the synthesizer output. Range is 0.0 to 1.0.
Length of gain envelope attack. Range is 0.0001 to 16.0. Unit is seconds.
Length of gain envelope decay. Range is 0.0001 to 16.0. Unit is seconds.
Value of gain envelope sustain. Range is 0.0 to 1.0.
Length of gain envelope release. Range is 0.0001 to 16.0. Unit is seconds.
Curve of gain envelope. Range is 0.0 to 1.0.
This curve is linear interpolation between direct output and saturated output.
gainEnv(t) := expEnv(t) * (tanh(3 * Curve * expEnv(t)) - expEnv(t))
Filter cutoff frequency. Range is 20.0 to 20000.0. Unit is Hz.
Biquad filter resonance. Range is 0.001 to 1.0.
When the value is set to minimum, the output volume will be very small.
Feedback of serial filter section. Range is 0.0 to 1.0.
Internally, 4 biquad filters are serially connected. Feedback send the last output of the filter to first biquad filter in serial section.
Saturation of filter. Range is 0.01 to 8.0.
This value is multiplied to the sum of input signal and feedback before going into wave shaper.
filterIn = shaper(Sat * (input - Feed * filterOut))
If Dirty Buffer
is not checked, the buffer of filter will be cleared for each note on.
Note that while Dirty Filter
is turned on, sometimes a glitch pops up at note on.
Type of filter.
LP
: Low-passHP
: High-passBP
: Band-passNotch
: Also called as band-stopBypass
Type of wave shaper used for filter saturation.
HardClip(x) := clamp(x, -1.0, 1.0)
Tanh(x) := tanh(x)
ShaperA(x) := sin(2 * pi * x) / (1 + 10 * x * x)
ShaperB(x) := 0.7439087749328765 * x^3 * exp(-abs(x))
Lenght of filter envelope attack. Range is 0.0001 to 16.0 。単位は.
Lenght of filter envelope decay. Range is 0.0001 to 16.0 。単位は.
Value of filter envelope sustain. Range is 0.0 to 1.0.
Lenght of filter envelope release. Range is 0.0001 to 16.0 。単位は.
Modulation from filter envelope to cutoff frequency. Range is -1.0 to 1.0.
Modulation from filter envelope to resonance. Range is 0.0 to 1.0.
Modulation from MIDI note number to cutoff frequency. Range is -1.0 to 1.0.
Modulation from MIDI note number to feedback. Range is -1.0 to 1.0.
SyncSawSynth is licensed under GPLv3. Complete licenses are linked below.
If the link above doesn’t work, please send email to ryukau@gmail.com
.
VST is a trademark of Steinberg Media Technologies GmbH, registered in Europe and other countries.