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Last updated on: 2026-05-30
App Store Apps > Music > Brusfri
Brusfri icon

Brusfri

1.2.1
Klevgränd produkter AB
4.01
80 reviews
$15.99

Not recently updated — last update was on 2021-04-29. This app may no longer be actively maintained.
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About Brusfri

Brusfri is an overall app developed by Klevgränd produkter AB.

Download Statistics

User Ratings

Brusfri is rated 4.01 out of 5 stars. The rating is based on 80 ratings.

App Information

Brusfri costs $15.99 to download. The APK download size is 40.95 MB. The latest version available is 1.2.1. The last update was on April 29, 2021.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play October 2017.

Description
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 can also be used as a AUv3 plug-in in compatible hosts, for example in GarageBand.

*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

Usage

In short, press “Learn” during a couple of seconds of isolated noise to create a "profile" for noise. This may be all you need to do.

Brusfri can be used in two ways, either standalone or as a AUv3 plug-in.

Standalone
Import the audio, either by extracting audio from a video, by importing from iTunes, or by using the “Open In…” option in any other app that can export audio. Press and hold the Learn button (the ear) while playing unwanted noise. (It’s important that the Ear is only fed with isolated noise). When Learn is released, Brusfri will start reducing noise.

AUv3 plug-in
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 will start reducing noise.

There are a bunch of parameters available that affect 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.

LOOKAHEAD
Makes transient processing a bit smoother.

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

HPF
Reduces low frequencies.

HIGH
Compensates high frequencies by boosting them.

MIX
Mixes between dry and noise reduced signal.

NOTE! Brusfri is CPU intensive and iPhone 6 / iPad AIR 2 or better is recommended. When used as an AUv3 plug-in, we highly recommend freezing/bouncing tracks to reduce CPU usage.
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More data about Brusfri

Price $15.99
Rating 4.01 based on 80 ratings
Ranking Not ranked
Version 1.2.1
App download size 41.0 MB
Suitable for Everyone

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Changelog of Brusfri

No changelog data

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Developer information for Klevgränd produkter AB

Klevgränd produkter AB

N/A

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App Store Rankings for Brusfri

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