The LoudnessWizard™ algorithm is the centerpiece in a
truly integrated loudness management solution. It handles most
loudness-related issues in a single, easy-to-use process. It
is versatile, flexible and organized in a way that makes operating
easy. Once it is configured, you can virtually leave it on its own
to work its wonders.
- Automatic Loudness Control
- Automatic Upconversion
- Automatic Downmix
- Lip-Sync Delay with Look-Ahead Capability
- True-Peak Limiting
- Automatic Detection of Input Signal (Mono, Stereo, 5.1)
- Handling of Normalized and Non-normalized Content
LoudnessWizard™ Main Features
We’ve placed the parameters you’ll most use in the MAIN tab:
The LoudnessWizard™ offers a combination of all transmission-related processes in one simple to use algorithm.
It automatically detects the input signal you pass through it.
For instance, if it receives a stereo signal and you have
pre-defined that all stereo signals should be upconverted to 5.1
surround, it will automatically do so.
Likewise, if the opposite should be the case, an incoming 5.1 signal will automatically be downmixed to stereo or mono depending on your preferences, while matching input signals will remain unconverted.
Basically, it takes away a task that usually has to be caried out manually, and in combination with all of the other processes that LoudnessWizard™ handles automatically, its combined arsenal of tools will make your task list shorter.
Realtime Loudness Correction
Subtle corrections to loudness can make a significant difference
to your viewers. Our LoudnessWizard™ is capable of doing just
that - correct substantially when needed, subtle when appropriate
and leave your audio absolutely un-touched when it's already
Years of research and standardization work on loudness and true-peak level has enabled us to design high-resolution, low-latency loudness control algorithms such as LoudnessWizard™. In broadcast, digitization is driving the number of AV channels and platforms up, while the total number of viewers remains roughly the same.
Using only a dialog-based level control principle has led to ambiguous level management, more level jumps between programs, and extra time spent on audio production and management in general.
Non-dialog based level jumps are currently creating havoc in digital TV; and the ALC part of LoudnessWizard™ helps correct that situation. For instance by utilizing the adaptive Stridency Reduction parameter that brings overly loud content under tight control, while leaving normal content untouched.
LoudnessWizard™ is also an
automatic, realtime 5.1 up-conversion audio processor. It
continuously monitors the format of the incoming audio. If the
signal falls back from a true 5.1 to stereo, it seamlessly
cross-fades into a convincing 5.1 surround up-conversion without
adding any interruptions or artifacts.
Detection does not require metadata or GPIs to function correctly, and the processing delay is only 2.8 ms (less than 1/10th frame). So, you don't need extra delays to maintain A/V sync.
Depending on your delivery platform, you may need to downmix. This takes place at overload-proof 48 bit resolution and transparent transcoding keeps the output perfectly conditioned for mobile TV, iPod or IPTV.
You can even transcode a wide loudness range feature film automatically on the fly at an impeccable audio quality.
Normalizing loudness based on 'perceived loudness' can lead to peaks that might overload. To cope with this, True-Peak metering and limiting is your last line of defence.
Your signal gets upsampled so that even inter-sample peaks are detected. The True-Peak limiting aspect of LoudnessWizard handles transient peaks seamlessly, keeping your audio at its finest.
Keeping track of the multitude of issues around loudness can be a challenge. That's why we've created a one-stop dedicated loudness website where you'll find critical information on the most important issues.
The site is an answer to the highly relevant
"What Is Loudness, and Why Is It Important?"
In the Press
There's a reason that world-leading broadcast magazine regularly invite us to share our knowledge: we've been pioneers in the digital audio world since 1985.
We've taken part in research studies and the definition of international broadcast standards right from the start, donating technology which has become a crucial part in new, open international standards.