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nih-plug/plugins/diopser/README.md
Robbert van der Helm d72bd56fe7 Change the limiter recommendation on Diopser
And explain what can happen and why when you start sweeping parameters
around.
2022-06-03 18:22:23 +02:00

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# Diopser
You were expecting Disperser[¹](#disperser), but it was me, Diopser!
Diopser lets you rotate the phase of a signal around a specific frequency
without affecting its spectral content. This effect can be used to emphasize
transients and other parts of a sound that in a way that isn't possible with
regular equalizers or dynamics processors, especially when applied to low
pitched or wide band sounds. More extreme settings will make everything sound
like a cartoon laser beam, or a psytrance kickdrum.
Because this plugin lets you crank every parameter up to 11, you may want to
avoid rapidly sweeping the frequency parameter down all the way to 5 Hertz when
you have many filter stages enabled. Because of the way these filters work, this
may cause comparatively loud resonances in the 0-15 Hertz range. In that case
you may want to use a peak limiter after this plugin until you understand how it
reacts to different changes, or maybe you'll want to check out [Safety
Limiter](../safety_limiter), which is made for this exact purpose.
This is a port from https://github.com/robbert-vdh/diopser with more features
and much better performance.
<sup id="disperser">
*Disperser is a trademark of Kilohearts AB. Diopser is in no way related to
Disperser or Kilohearts AB.
</sup>
## Download
You can download the development binaries for Linux, Windows and macOS from the
[automated
builds](https://github.com/robbert-vdh/nih-plug/actions/workflows/test.yml?query=branch%3Amaster)
page. Or if you're not signed in on GitHub, then you can also find the latest nightly
build [here](https://nightly.link/robbert-vdh/nih-plug/workflows/build/master).
The macOS version has not been tested and may not work correctly. You may also
have to [disable Gatekeeper](https://disable-gatekeeper.github.io/) to use the
VST3 version as Apple has recently made it more difficult to run unsigned code
on macOS.
### Building
After installing [Rust](https://rustup.rs/) with the nightly toolchain (because
of the use of SIMD), you can compile Diopser as follows:
```shell
cargo +nightly xtask bundle diopser --release
```