nvk_AUTODOPPLER 2
Generate doppler automation for items in Reaper
Doppler passes are slow to draw by hand, and slower when you need a batch of variations. The script finds the peak of each item on a track and writes the doppler automation around it. Then you adjust it with sliders, randomize it, and render.
Purchases go through Gumroad.com
- 14-day trial, no card needed
- nvk_DOPPLER plug-in included
- macOS & Windows, Reaper 7+
- Multi-user licenses available
Try the main controls
Attack, Release, Offset, and Amount work like the sliders in the script. Press play to hear a pass that follows the curve. Below it, the same settings are applied to every item on a track.
The sound is synthesized in your browser to show the shape of the curve. Use headphones to hear the pan. In Reaper, the script writes this automation to the plug-in you pick.
How it works
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Select a track
Select the track with your items. If it's a folder, the script includes the child tracks. Make a time selection to work on part of the track.
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Run nvk_AUTODOPPLER
It finds each item's RMS peak, or uses its snap offset, and writes automation for every item at once. The automation updates as you move the sliders.
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Render
Render the time selection, or the whole track. With Split takes on, each item gets its own take.
Features
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Peak detection
Uses each item's RMS peak, or its snap offset if you've set one. Offset moves the peak earlier or later.
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Envelope and playrate sliders
Attack, Release, Offset, and Hold shape the envelope. Amount and Multiplier set the playrate swing. Changes apply to every item on the track or folder.
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Randomize
Press R to randomize all sliders. Each slider has its own randomization amount, and per-item randomizing gives every item in a batch different settings.
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Quick Render
Renders the selected items with your last settings, without opening the window. With one item selected, the peak goes where you place the edit cursor.
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Custom mode
nvk_AUTODOPPLER - Custom writes the same automation to any FX parameter you touch, such as a filter cutoff or a reverb mix.
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Saved with the project
Settings are stored on the track, the project, and each item, so reopening the script picks up where you left off.
Supported plug-ins
Choose the plug-in from a menu in the script. The sliders change to match it.
- nvk_DOPPLERIncluded
- Tonsturm TRAVELER (opens in a new tab)Supported + Presets
- Tonsturm DopplerPRO (opens in a new tab)Supported
- Waves Doppler (opens in a new tab)Supported
- GRM Doppler (opens in a new tab)Supported
- Sound Particles Doppler (opens in a new tab)Supported*
*Sound Particles Doppler plays back and renders one doppler at a time.
Included
nvk_DOPPLER
A doppler effect that works by modulating Reaper's playrate, so the pitch can swing much further than a conventional plug-in allows, with no latency or buffer. It has volume, pan, and air controls, plus dry mix, tremolo, compression, and a limiter.
FAQ
Can I try it before buying?
Yes. The script includes a 14-day trial with no card required. Install it by following the install guide (opens in a new tab), then run it in Reaper. When the license prompt appears, leave the field blank and click OK.
Do I need a third-party doppler plug-in?
No. nvk_DOPPLER is included. The third-party plug-ins listed above are optional.
Which versions of Reaper and which systems are supported?
Reaper 7 or later on macOS and Windows.
What do I need before installing?
Reaper, ReaPack, the SWS/S&M Extension, ReaImGui, and the js_ReaScript API. The scripts install through ReaPack; the install guide (opens in a new tab) walks through every step.
Can I use my license on more than one computer?
Yes. Each seat may be activated on up to four computers at a time, all used by the same person.
Can I buy licenses for a team?
Yes. Use the team license option at the bottom of this page to choose how many people need it, and you'll get one multi-user key. Questions? Email support@nvk.tools.
nvk_AUTODOPPLER 2
Includes the nvk_DOPPLER plug-in and updates through ReaPack. Try it free for 14 days before you buy.
Purchases go through Gumroad.com
Buying for a team? Choose how many people need it and you'll get one multi-user key. Each person can use it on up to four of their own computers. Regular price $49, now $49 per license.
The Sound Design Bundle includes nvk_AUTODOPPLER 2 and nvk_CREATE for less than buying them separately.
See the bundle