Introducing Linear Acoustic Intelligent Dynamics

Introducing Linear Acoustic

Intelligent Dynamics

Delivering audio to television viewers that satisfies loudness regulations (and loudness meters) is not a difficult task. Doing so without permanently impacting audio quality presents a much larger challenge, and one that can now be met head-on with Linear Acoustic Intelligent Dynamics hybrid metadata processing.

Featured at no additional cost as part of the Linear Acoustic AERO.1000 Audio/Loudness Platform and AERO.2000 Audio/Loudness Manager, Intelligent Dynamics is actually a combination of two revolutionary technologies.

The first technology is a portion of the new Dolby Intelligent Loudness system which measures and incorporates authenticated loudness data, called Dolby Evolution (EVO) data, within the audio at each stage of the chain from production onwards.

The second technology, developed by Linear Acoustic, creates new metadata dynamic range control via traditional processing techniques, resulting in a hybrid that can be set to permanent (via traditional single-ended processing), reversible (via metadata), or anywhere in between. Dolby EVO data is then used to control the degree and type of processing applied to the audio.

The television industry has made great progress in aligning the average loudness of commercials, interstitials, and programs. But until now, that process has involved a certain degree of compromise, says Linear Acoustic Founder and Telos Alliance CTO Tim Carroll. There are myriad unknowns at play in television loudness management. Some content is well produced and some is not. Viewers watching an adventure movie in a home theater have different needs than those in a typical living room listening through tiny television speakers. Intelligent Dynamics does away with the old one size fits all approach.

Most current television audio processors control loudness by managing dynamic range in real time. This effectively manages boundary issues such as commercials that follow a quiet program segment, but also compromises the impact and excitement of intentionally dynamic scenes because all programming gets some degree of permanent correction.

Audio transmission formats such as Dolby Digital (AC-3) and Dolby Digital Plus already incorporate metadata dynamic range control (DRC) profiles, which can provide some control, but these profiles are not ideally suited for broadcast audio and often result in significant over or under processing if other metadata parameters are not correct.

Intelligent Dynamics overcomes these compromises and enables audio to be processed to the degree and permanence dictated by the programming itself. The content effectively and automatically controls the processing and eliminates the need for further downstream changes that could irreparably change it.

The result is that consumers can now enjoy the benefits of audio that is tailored to their liking using existing Dolby Digital and Dolby Digital Plus decoders. From the default of controlled dynamic range for noisy environments and small television speakers to full dynamic range for well-produced programming and multi-channel home theater systems, Linear Acoustic Intelligent Dynamics delivers the best of both worlds without compromise.

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