There are some very well known audio restoration software packages from the likes of iZotope, Sonnox and Accusonus, but just may be they haven’t they got the audio restoration market sown up. Recently our own Mike Thornton had the chance to try out an audio restoration plug-in from the Swedish developer Klevgrand.

What Is Brusfri?

Brusfri actually mean ‘noise free’ in Swedish which perhaps gives an indication of what it can do.

What Klevgrand Say About Brusfri

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.

• Several frequency-trimmed expanders build an intelligent noise suppressor

• No phase-altering, which leaves the desired sound untouched (no squishy artifacts as in many other noise reducers)

• Intuitive and unique user interface

1. Learn button

Brusfri needs some noise to be analysed. Most of the time, this is the only thing that's needed. Push and hold to feed audio data and create a noise profile.

2. Attack-Threshold-Release

These parameters controls all the internal expanders relatively.

3. Tonality

Most of the time, Brusfri a good job in creating a noise profile that works as expected, but in some cases (especially when there's heavy noise involved) one needs to tweak a bit.

In this free video tutorial, made with the support of Klevgrand, audio restoration specialist Mike Thornton show how to get the best out of Brusfri from Klevgrand.

Klevgrand Brusfri System Requirements And Pricing

• Supporting Operating Systems

  • Mac OS X 10.7+

  • Windows 7+ with SP1 or higher

• Supported Plug-In Formats

  • Audio Units (Mac only)

  • VST

  • AAX Native

• Price: $59.99

• iPad/iPhone

  • Requires iOS 9.1 or later.

  • Compatible with iPhone, iPad, and iPod touch.

  • Price: $14.99