TC Electronic LCn Loudness Correct Normalisation Plug-Ins

Monday 2nd March 2015

TC Electronic LCn Loudness Correct Normalisation Plug-Ins
TC Electronic’s new LCn Loudness Correct Normalisation plug-ins are designed to help audio professionals accurately meet loudness targets for those working in delivery platform such as HDTV, Mobile TV, podcast, radio, iTunes, Spotify, and more.

Available as a Pro Tools plug-in or stand-alone, LC2n and LC6n are offered for stereo or 5.1 surround, respectively. The LCn plug-in version allows Pro Tools users to apply faster-than-real-time, two-pass, off-line processing from within their host, while the stand-alone version runs on PC and Mac with watch folder capability for automatic batch-normalisation of multiple audio files.

Contact HHB or Scrub Sales for more information on LCn and other TC Electronic loudness products:

HHB Sales: +44 (0)20 8962 5000 or

Scrub Sales: +44 (0)20 7025 6020 or

A key functionality in the LCn stand-alone version is the dedicated watch folder capability that allows users to simply drag and drop their audio files into a user-defined target folder for fast and easy loudness normalisation and true peak limiting. The new, normalised file will automatically be created in another user-defined destination folder, and the application can be set to automatically delete the original file or keep it in the watch folder.

Watch the Light

Another practical feature is the “traffic light” indicators to quickly see whether or not a file is compliant with the standard chosen. Users may even paste multiple audio files into the watch folder, making the LCn a highly efficient loudness batch processor. The watch folder feature also works across a networked system, allowing it to be installed on a central server so that users can simply drag their audio files to it from any computer on the network.

Mastering-Grade True Peak Limiter

True peak limiting is an essential part of normalising to loudness, and TC Electronic has developed a very accurate way of measuring and processing peaks. Its renowned Brickwall 2 True Peak Limiter is an integrated part of LCn – complete with various true peak limiter profiles and linking functionality.

For broadcasters who deliver to multiple platforms such as HD TV and Mobile TV, it is essential to be able to hit two very different loudness targets, typically  -23/-24 LUFS and -16 LUFS. In that process a true peak limiter is absolutely key and with Brickwall 2 handling the peaks, audio quality is kept at its finest regardless of the delivery platform.

S-Max and Loudness

LCn takes the very latest revision of the EBU R128 standard into consideration by adding a ‘Short-Term Max Limit’ feature that the user can choose to activate.

In other words, it is now possible to hit the loudness target and at the same time comply with the new S-Max goals of the EBU R128-2014 revision. This is absolutely essential for producers of short-duration content such as commercials and trailers.

Dual Radar Confidence Check

During processing LCn shows two small Loudness Radar Meters that all TC Electronic loudness meter users will be familiar with. However, even new users will easily be able to understand how the Dual Radar Confidence Check feature works.
Quite simply, the Radar Meter on the left shows the loudness landscape over time (short-term loudness) of the original content, and as soon as the processing has been completed, the loudness landscape is shown on the right radar reflecting the new, loudness-normalized audio file. For instance, if the program material is of longer durations this is a very easy and fast way to check, literally at a glance, that everything is in order.

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