Brusfri

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iTunes Description:

IMPORTANT! Brusfri is currently AUv3 only, which means it won’t work in stand alone mode. It must be used as a plugin with Garageband, Cubasis, Auria, AUM, AudioBus 3 (not AudioBus 2) or any AUv3 compatible host. If you’re not sure what AUv3 is, do not buy this app.

Brusfri* is a highly advanced audio noise reducer, packed into a simple and straight-forward interface. It is very well suited for cleaning up noisy audio recordings, while retaining sound quality. Unlike many other noise reducers on the market, Brusfri doesn't mess with audio phasing to suppress noise (a technique that often comes with audible side effects). Instead, multiple fine-tuned gates are used to silence unwanted noise.

*Brusfri means "Noise free" in Swedish.

Here are some examples of sound conditions that Brusfri handles well:

* Guitar amp
* Noisy vintage gear
* Boosted pre-amp
* iPhone/iPad and external mic hiss
* Room reverb removal
* Fan noise
* Background ambiance
* Mains hum / Electric hum

Press “Learn” during a couple of seconds of isolated noise to record a "profile" for noise.

Use:

Open Brusfri in any AUv3 compatible host.
Find a region in the recording that only contains noise and play it.
Tap and hold the “LEARN” button for a short while (a second will be enough)
When the LEARN button is released, Brusfri starts reducing noise.

There is also a bunch of parameters available that affects the noise reduction algorithm:

ATK / THRS / REL (Attack Time / Threshold / Release Time)

Threshold - basically determines how much noise to be removed. A lower value means more reduction

Attack and Release sets the time it will take for the reducer to start working.

EDGE

Controls the reduction aggressivity. A lower value gives a smoother reduction.

HPF

Reduces low frequencies.

HIGH

Compensates high frequencies by boosting them.

NOTE! Brusfri is CPU intensive and iPhone 6S / iPad AIR 2 or better is recommended. We highly recommend freezing/bouncing tracks to reduce CPU usage.

iPad Screenshots:

iPhone Screenshots:

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