# ParallelDetune

ParallelDetune is a detuning effect with 8 pitch shifters connected in parallel. It can be used to spread stereo image similar to chorus effect.

- Download ParallelDetune 0.1.6 `full` - VST 3 (github.com)
- Download ParallelDetune 0.1.6 `macOS` - VST 3 (github.com)
- Download Presets (github.com)

`full` package contains following builds.

- Windows (x86_64)
- Linux (x86_64)
- macOS (Universal 2)

Linux build is built on Ubuntu 24.04. If you are using distribution other than Ubuntu 24.04, plugin will not likely to run. In this case, please take a look at build instruction.

`macOS` package is recommended for macOS user. I can’t purchase Apple Developer Program, therefore installation requires a workaround to bypass Gatekeeper. Details of workaround are written in Installation -> macOS Specific section.

## Contact

Feel free to contact me on GitHub repository or `ryukau@gmail.com.`

You can fund the development through paypal.me/ryukau.

## Installation

### Plugin

Move `*.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.

### Presets

Notice: Some plugins don’t have presets provided by Uhhyou Plugins.

Presets are included in the plugin package linked at the top of this page. To install presets, follow the steps below.

1. Download plugin from a link at the top of this page.
2. Extract downloaded zip file.
3. Open `presets` directory placed in extracted package.
4. Move `Uhhyou` directory into an OS specific preset directory (see below).

Below is a list of preset directories for each OS.

- Windows : `/Users/$USERNAME/Documents/VST3 Presets`
- Linux : `$HOME/.vst3/presets`
- macOS : `/Users/$USERNAME/Library/Audio/Presets`

Preset directory name must be the same as the plugin. If preset directory does not exist, create it.

- Preset Locations - VST 3 Developer Portal

### Windows Specific

If DAW doesn’t recognize the plugin, try installing C++ redistributable (`vc_redist.x64.exe`). Installer can be found in the link below.

- Latest supported Visual C++ Redistributable downloads | Microsoft Learn

### Linux Specific

On Ubuntu 24.04, those packages are required.

    sudo apt install libxcb-cursor0  libxkbcommon-x11-0

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.

- VSTGUI: Setup

REAPER on Linux may not recognize the plugin. A workaround is to delete a file `~/.config/REAPER/reaper-vstplugins64.ini` and restart REAPER.

### macOS Specific

Important: `full` package is not confirmed working. When using `full`, try removing following files.

- `Contents/Resources/Documentation`
- `Contents/x86_64-linux`
- `Contents/x86_64-win`

`macOS` package doesn’t contain above files. Also, all packages are in “ad-hoc signing” state set by `codesign` command.

#### Remove Quarantine

When trying to run plugin first time, following message may appear on macOS.

    <PluginName>.vst3 is damaged and can't be opened. You should move it to the Trash.

In this case, open terminal and try running one or both of following command to unzipped `.vst3` directory. Replace `/path/to/PluginName.vst3` according to your install location.

    xattr -rd com.apple.quarantine /path/to/PluginName.vst3
    xattr -rc /path/to/PluginName.vst3

#### Bypass Gatekeeper

Plugin may be considered as unsigned/un-notarized application. In this case, open System Preferences, go to Security & Privacy → General, then click the Open Anyway button. The offcial Apple help page linked below has screenshots for the procedure. See “If you want to open an app that hasn’t been notarized or is from an unidentified developer” section.

- Safely open apps on your Mac - Apple Support

If the plugin is still not working, try changing install location to `/Library/Audio/Plug-ins/VST3/` or `/Users/$USERNAME/Library/Audio/Plug-ins/VST3/` whichever still haven’t tried.

If all the above methods do not work, try following the steps below.

1. Open terminal and run `sudo spctl --master-disable`.
2. Go to System Preferences → Security and Privacy → General → Allow apps downloaded from, then select “Anywhere”.

Beware that steps above degrades security of your system. To revert the settings, follow the steps below.

1. Go to System Preferences → Security and Privacy → General → Allow apps downloaded from, then select option to “App Store and identified developers”.
2. Open terminal and run `sudo spctl --master-enable`.

#### Applying `codesign`

Note This section may not relevant to `macOS` packages. However it’s not verified. (GitHub issue)

To use `full` package, following command might be used.

    sudo codesign --force --deep -s - /path/to/PluginName.vst3

`codesign` might not be available without installing Xcode.

#### Reference

- Safely open apps on your Mac - Apple Support
- java - “libprism_sw.dylib” cannot be opened because the developer cannot be verified. on mac JAVAFX - Stack Overflow
- How to Fix App “is damaged and can’t be opened. You should move it to the Trash” Error on Mac
- Allowing unsigned/un-notarized applications/plugins in Mac OS | Venn Audio

## GUI Style Configuration

At first time, create color config file to:

- `/Users/USERNAME/AppData/Roaming/UhhyouPlugins/style/style.json` on Windows.
- `$XDG_CONFIG_HOME/UhhyouPlugins/style/style.json` on Linux.
  - If `$XDG_CONFIG_HOME` is empty, make `$HOME/.config/UhhyouPlugins/style/style.json`.
- `/Users/$USERNAME/Library/Preferences/UhhyouPlugins/style/style.json` on macOS.

`style.json` will be loaded for each time a plugin window opens.

Several color themes are available on the link below. To use, copy the text to `style.json`.

- VSTPlugins/package/style/themes at master · ryukau/VSTPlugins

Below is an example of `style.json`.

    {
      "guiScale"          : 1          ,
      "fontFamily"        : "Tinos"    ,
      "fontBold"          : true       ,
      "fontItalic"        : true       ,
      "foreground"        : "#000000"  ,
      "foregroundButtonOn": "#000000"  ,
      "foregroundInactive": "#8a8a8a"  ,
      "background"        : "#ffffff"  ,
      "boxBackground"     : "#ffffff"  ,
      "border"            : "#000000"  ,
      "borderCheckbox"    : "#000000"  ,
      "borderLabel"       : "#000000"  ,
      "unfocused"         : "#dddddd"  ,
      "highlightMain"     : "#0ba4f1"  ,
      "highlightAccent"   : "#13c136"  ,
      "highlightButton"   : "#fcc04f"  ,
      "highlightWarning"  : "#fc8080"  ,
      "overlay"           : "#00000088",
      "overlayHighlight"  : "#00ff0033"
    }

### GUI Scale

- `guiScale`: GUI scaling. For example, `0.75` is 75%, and `2.0` is 200%.

The minimum of `guiScale` is `0.01`. The maximum is practically non-existent (the max value of 64-bit float).

Notice: If `guiScale` is too large, DAW may place the “close” button on the plugin window out of screen, making it unclickable.

### Font Options

Following is a list of font options.

- `fontFamily`: Font family name.
- `fontBold`: Enable bold style when `true`, disable when `false`.
- `fontItalic`: Enable italic style when `true`, disable when `false`.

System font can be used as `fontFamily`. To use different fonts for different plugins, place `*.ttf` file into custom font path: `*.vst3/Contents/Resources/Fonts`.

Notice: If the combination of `fontFamily`, `fontBold`, `fontItalic` does not exist in custom font path, default font of VSTGUI is used.

If `fontFamily` is set to empty string `""`, then `"Tinos"` is used as fallback. If the length is greater than 1 and the font family name doesn’t exist, default font of VSTGUI is used.

Styles other than bold, italic or bold-italic are not supported by VSTGUI. For example, “Thin”, “Light”, “Medium”, and “Black” weights cannot be used.

### Color Options

Hex color codes are used.

- 6 digit color is RGB.
- 8 digit color is RGBA.

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.

Following is a list of color options. If an option is missing, default color will be used.

- `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.
- `borderLabel`: Line color of parameter section label.
- `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.

## Controls

`Right Click` on the controls pops up a context menu provided by DAW.

Knob and slider provides following controls:

- `Ctrl` + `Left Click`: Reset value.
- `Shift` + `Left Drag`: Fine adjustment.
- `Middle Click` : Rotate through minimum, default and maximum value.
- `Shift` + `Middle Click` : Take floor of current value.
  - Note: For decibel (`dB`) parameters, floor is applied after the value is converted to amplitude.

Control with many blue vertical bars (BarBox) have some keyboard shortcuts. Shortcuts are enabled after left clicking BarBox and mouse cursor is on the inside of BarBox.

Input | Control
--- | ---
`Left Drag` | Change Value
`Shift` + `Left Drag` | Change Value (Snapped)
`Ctrl` + `Left Drag` | Reset to Default
`Ctrl` + `Shift` + `Left Drag` | Change Value (Skip Between Frames)
`Middle Drag` | Draw Line
`Shift` + `Middle Drag` | Edit One Bar
`Ctrl` + `Middle Drag` | Reset to Default
`Ctrl` + `Shift` + `Middle Drag` | Toggle Lock
`a` | Alternate Sign
`d` | Reset Everything to Default
`D` | Toggle Min/Mid/Max
`e` | Emphasize Low
`E` | Emphasize High
`f` | Low-pass Filter
`F` | High-pass Filter
`i` | Invert Value (Preserve minimum)
`I` | Invert Value (Minimum to 0)
`l` | Toggle Lock under Mouse Cursor
`L` | Toggle Lock for All
`n` | Normalize (Preserve minimum)
`N` | Normalize (Minimum to 0)
`p` | Permute
`r` | Randomize
`R` | Sparse Randomize
`s` | Sort Descending Order
`S` | Sort Ascending Order
`t` | Subtle Randomize (Random walk)
`T` | Subtle Randomize (Converge to 0)
`z` | Undo
`Z` | Redo
`,` (Comma) | Rotate Back
`.` (Period) | Rotate Forward
`1` | Decrease
`2`-`4` | Decrease 2n-4n
`5`-`9` | Decimate by holding 2n-5n

Snapping is not available for all BarBox. If you’d like to have snapping for certain BarBox, feel free to open issue to GitHub repository.

Edit One Bar with `Shift` + `Right Drag` holds a bar under the cursor when mouse right button is pressed. Then only changes that one bar while holding down mouse right button.

Toggle Lock with `Ctrl` + `Shift` + `Right Drag` behaves as line edit. When right mouse button (RMB) is pressed, it holds the opposite state of the bar below mouse cursor, then use the state for the rest of bars. For example, if RMB is pressed on a locked bar, dragging unlocks bars while holding down RMB.

Some BarBox has scroll bar to zoom in. Scroll bar has handles on left end and right end. To control zoom, use `Left Drag` on one of the handle. Scroll bar also has following controls:

- `Right Click` : Reset zoom.
- `Mouse Wheel` : Zoom in/out.

## Block Diagram

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.

## Note Event Input

ParallelDetune can receive note events to control pitch shift amount.

## Parameters

Characters inside of square brackets [] represents unit. Following is a list of units used in ParallelDetune.

- [s]: second.
- [oct.]: octave.
- [st.]: semitone.
- [cent]: 1/100 of a semitone.

### Shifter

Dry

  Gain for bypassing input signal.

Wet

  Gain for output signal comes out from ParallelDetune.

Feedback

  Pitch shifter feedback gain.

HP, LP

  Cutoff frequency of highpass (`HP`) or lowpass (`LP`) filter on feedback path.

Delay Time [s]

  Buffer length of pitch shifter. The value is not exact, but a rough indication.

  When the value of `Shift \[oct.\]` is not 0.0, delay time is doesn’t match the displayed value because of the change of buffer playback speed.

  LFO can be applied by turning the knob on the right side of number slider.

Transpose [st.]

  Pitch shift amount used for all the pitch shifters.

  This might be convenient when changing all the pitch shift at once.

  LFO can be applied by turning the knob on the right side of number slider.

Pan. Spread

  Amount of stereo spread.

  When `Pan. Spread` is 0.0, left and right channels are processed without affecting other. When `Pan. Spread` is 1.0, the output of the pitch shifters with same index on left and right channel are summed, then stereo panning is applied from left to right in order from lowest index to highest.

  When LFO is applied, it rotates the pan. Note that waveform of LFO is fixed to sine wave for `Pan. Spread`.

  Tremolo can be used in combination of `Pan. Spread` to add character to stereo spread.

Tremolo Mix, Tremolo Lean

  Tremolo parameters.

  Tremolo is disabled when `Tremolo Lean` is set to 12 o’clock, or `Tremolo Mix` is set to leftmost.

  Tremolo is fully applied when `Tremolo Lean` is set to leftmost or rightmost, and `Tremolo Mix` is set to rightmost.

  When `Pan. Spread` is not 0.0, stereo image leans left or right depending on the value of `Tremolo Lean`.

Pitch Shift [st.], Fine Tuning [cent]

  Amount of pitch shift.

  `Pitch Shift` is suitable to change large amount of pitch, and `Fine Tuning` is suitable to change small amount. The range of `Pitch Shift` is 1 octave, and the range of `Fine Tuning` is 10 cents.

Gain

  Gain for each pitch shifter.

Time Multiplier

  Buffer length for each pitch shifter. The value is relative to `Delay Time`.

HP Offset [oct.], LP Offset [oct.]

  Highpass or lowpass filter cutoff frequency for each pitch shifter. The value is relative to the value of `HP` or `LP`.

### LFO

L-R Offset

  LFO phase offset between stereo channels.

Phase

  A value that is added to LFO phase.

  To manually control LFO phase, set `Rate` to leftmost to stop LFO, then change the value of `Phase`. Also, the value of `Smoothing` affects the response time when `Phase` is changed.

Sync.

  When checked, it enables tempo synchronization (tempo sync). LFO phase also synchronize to the exact position derived from sync interval, and time passed from the start of playback.

  When not checked, LFO behaves as same as if synchronizing to 120 BPM. It also disables LFO phase sync.

Tempo Upper

  Numerator of sync interval.

  LFO synchronizes to 1 bar when `(Tempo Upper) / (Tempo Lower)` is `1/1`. `1/4` synchronizes to 1 beat when time signature of `4/4`. Note that `Rate` multiplies the sync interval.

  Following is the equation to calculate sync interval.

      syncInterval = (Rate) * (Tempo Upper) / (Tempo Lower);

Tempo Lower

  Denominator of sync interval.

  Note that `Rate` multiplies the sync interval.

Rate

  Multiplier to sync interval.

  `Rate` is convenient when changing sync interval while keeping the values of `Tempo Upper` and `Tempo Lower`.

Wave Interp.

  LFO wave form interpolation method.

  - `Step`: Holding.
  - `Linear`: Linear interpolation.
  - `PCHIP`: Monotonic cubic interpolation.

  `Step` makes LFO to act like a sequencer. `Linear` sounds similar to `PCHIP`, and the computation cost is lower. `PCHIP` is the most smooth among all 3.

LFO Wave

  LFO waveform.

Smoothing [s]

  Paramter smoothing time in seconds.

  For example, if the value of `Smoothing` is set to `0.01` or something short, the change of parameter almost immediately applies. So it sounds more snappy, but may introduce audible pop noise. On the other hand, if the value of `Smoothing` is set to `1.0` for example, the change of parameter is only slowly followed.

## Change Log

- 0.1.6
  - Added GUI scaling.
  - Fixed a bug on BarBox that the “ascending sort” shortcut was disabled.
  - Updated the Linux patch for VSTGUI4.
- 0.1.5
  - Fixed GUI on Linux.
- 0.1.4
  - Changed to include presets in plugin zip package.
  - Fixed a bug that invalid `style.json` crashes plugin.
- 0.1.3
  - Changed default style color of `foregroundInactive`.
  - Fixed performance drop caused by subnormal floating point numbers.
- 0.1.2
  - Added presets.
  - Fixed crash on Renoise. Previous code was trying to access freed memory of GUI widgets, and it was causing the crash.
- 0.1.1
  - Fixed stuttering on Audacity where `processContext` is `nullptr`.
- 0.1.0
  - Updated splash screen text.
  - Changed GUI.
- 0.0.1
  - Initial release.

## Old Versions

- ParallelDetune 0.1.5 - VST 3 (github.com)
- ParallelDetune 0.1.4 - VST 3 (github.com)
- ParallelDetune 0.1.3 - VST 3 (github.com)
- ParallelDetune 0.1.2 - VST 3 (github.com)
- ParallelDetune 0.1.1 - VST 3 (github.com)
- ParallelDetune 0.1.0 - VST 3 (github.com)
- ParallelDetune 0.0.1 - VST 3 (github.com)

## License

ParallelDetune is licensed under GPLv3. Complete licenses are linked below.

- https://github.com/ryukau/VSTPlugins/tree/master/License

If the link above doesn’t work, please send email to `ryukau@gmail.com`.

### About VST

VST is a trademark of Steinberg Media Technologies GmbH, registered in Europe and other countries.