Neural Loudness Control (NLC) is an advanced loudness leveling technology that accurately measures and regulates the perceived loudness differences in audio. Annoying side-effects of traditional audio processing are eliminated and loudness is controlled without squashing the quality of the audio. The result is audio with a natural, open quality and a consistent audio experience for all viewers.

NLC actually mimics human perception of audio and provides tight control of loudness. Neural's Loudness Measurement detects spectral and density differences, inter-channel relationships and temporal overlaps within the audio signal. After detection, NLC applies the appropriate gain or attenuation to the audio to achieve a user-defined loudness level.

If NLC is used ahead of an AC3 (Dolby Digital) transmission, the target loudness level will also match the DialNorm metadata information, thus providing viewers with a consistent audio experience.

Key Benefits of Neural Loudness Control

Guarantees a consistent viewer experience despite variations in consumers' equipment
Adheres to the ITU BS.1770 loudness recommendation, and--more importantly--agrees with your viewer's perception of loudness
Uses the same loudness control for stereo and 5.1 surround content
Manages loudness without a "squashed" or compressed sound
Corrects loudness while preserving the original equal loudness curve
Using look-ahead technology, makes large gain corrections imperceptible

Neural Loudness Control and Neural Surround

Neural Loudness Control can also be used with Neural Surround audio imaging products. Refer to the UpMix+NLC, DownMix+NLC and MultiMerge+NLC pages for more information.

Applications

DTV facilities, Production studios, Ingest Points, Mobile Production. Commonly used in front of STL paths, Dolby-E or AC-3 encoders.

Configurations

The Neural Loudness Control system is available in different configuration:

NLC 2.0: Stereo Loudness Control
NLC 5.1: Multi-channel Loudness Control
NLC 2.0+5.1: Stereo and Multi-channel Loudness Control
NLC 4x2.0: 4 Simultaneous Stereo Loudness Control

Ordering Information

Part #	Description
LOUDCTRL	Loudness Control for 2.0 or 5.1 Program Audio, unbalanced 75 ohms AES (BNC) interface
LOUDCTRL-B	Loudness Control for 2.0 or 5.1 Program Audio, balanced 110 ohms AES (XLR) interface
LOUDCTRL-8	Loudness Control for 4 x 2.0 Program Audio, unbalanced 75 ohms AES (BNC) interface
LOUDCTRL-8-B	Loudness Control for 4 x 2.0 Program Audio, balanced 110 ohms AES (XLR) interface
LOUDCTRL-6+2	NLC Loudness Control for 2.0 and 5.1 Program Audio, unbalanced 75 ohms AES (BNC) interface
LOUDCTRL-6+2-B	NLC Loudness Control for 2.0 and 5.1 Program Audio, balanced 110 ohms AES (XLR) interface

HOW TO BUY

CUSTOMER QUOTES

"We are definitely sold on Neural-THX Surround. We think that our listeners will also be sold by the exceptional surround sound experience that the technology will bring to their homes and offices."

- Jim Paluzzi is VP of new media and technology, Colorado Public Radio, Denver