Swedish digital audio pioneer Dirac unveiled the Dirac Live Active Room Treatment, the latest feature in the Dirac Live audio room correction suite, addressing bass resonance and room decay time for cleaner, tighter bass reproduction.

Dirac Live Active Room Treatment will make its debut in all high-performance StormAudio AVRs through a firmware update slated to roll out this Spring 2023.

“Dirac pioneered digital room correction through our impulse response optimization technology found in our acclaimed Dirac Live Room Correction feature,” stated Mathias Johansson, Dirac’s Chief Product Officer. “Now, with Active Room Treatment we are moving beyond traditional room correction to actually reduce bass decay times digitally, without needing bass traps or thick layers of wall absorption.”

Dirac Live Active Room Treatment uses the company’s MIMO mixed-phase impulse response correction technology to enable spatial optimization, in which all speakers in a sound system interact for acoustic treatments that transcend what passive systems can accomplish.

Dirac said its Live Room Correction reduces decay times digitally and automatically.

“Listeners experience clear sound devoid of boomy, smeared bass – as if the room itself didn’t exist,” the announcement said.

Dirac is demonstrating the Dirac Live Active Room Treatment feature this week at CES 2023 in its private suite at the Venetian Hotel.

The company said that until now, managing bass response and room reflections required physical sound dampeners to be installed on the walls or other areas. But Dirac Live Active Room Treatment works much like Active Noise Cancellation technology, using the system’s own speakers to actively cancel out unwanted wavelengths originating from other speakers.

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This is achieved by measuring the entire setup as a unified system, instead of targeting each speaker individually, and applying advanced spatial optimization to the entire system based on the needs of each unique room.

Home entertainment rooms and similar spaces can take a long time for bass to decay — or stop bouncing around the room — resulting in ringing or booming. Dirac Live Active Room Treatment was developed to automatically evaluate and adjust the bass characteristics of the entire system, leveraging the strengths of each speaker to make up for any shortcomings in other speakers, the company said.

This effectively turns passive speakers into active support units, strengthening the overall system.

“By actively optimizing and coordinating bass response characteristics from all the speakers in a system, our latest Dirac Live feature reduces decay times to provide an incredibly dense and transparent audio experience in any room,” Johansson said.

Dirac Live Active Room Treatment complements other Dirac Live features – Dirac Live Room Correction and Dirac Live Bass Control – to improve sound performance in any listening area. It can be used in any system with more than one speaker, with progressive performance enhancements based on the total speakers in the system. The more speakers a system has, the greater the effect of the spatial optimization.

“Passive treatments for controlling low-end resonances have been around for years, but they’re not necessarily effective and require physical changes to the listening area, so most people don’t use them,” Johansson continued. “Dirac Live Active Room Treatment is the only solution available that reduces room decay time for a much clearer and tighter bass.”

Dirac Live Active Room Treatment will be included, at no additional fee, in all StormAudio Processors and AVRs ordered from Jan. 1, 2023.

StormAudio products ordered before January 1st will be upgradeable with Dirac Live Active Room Treatment after the Spring 2023 firmware update and by purchasing a license from Dirac’s online store at $299, the company said.

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By Greg Tarr

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