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Author Topic: Assessing Room Correction Products: Dirac And Acourate  (Read 166 times)

M. Erik Matlock

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Assessing Room Correction Products: Dirac And Acourate
« on: January 10, 2019, 04:32:47 pm »

Assessing Room Correction Products: Dirac And Acourate
Examining the reality of tools designed to counter low frequency acoustic problems with equalization or processing.
By Ethan Winer • January 10, 2019


The best way to deal with acoustic problems in a home studio or professional control room is with bass traps and other acoustic treatment. All rooms have peaks and deep nulls, and their amount and frequency changes radically with position. Even at very low frequencies, below 80 Hz, the response can vary as much as 12 dB or even more over a span of just a few inches.

Besides a skewed response, all rooms also suffer from modal ringing at the peak frequencies. This causes those frequencies to continue after the source sound stops, then decay over time. Unlike reverb that extends all frequencies more or less evenly, modal ringing extends only those frequencies that are related to the room dimensions.

The additional energy that lingers makes musical notes at (or near) those frequencies even more prominent, exaggerating the peaks that are already elevated. Modal ringing also harms music clarity because multiple bass notes sound at the same time. If you’ve ever played chords in the low register of a piano, you know they sound much less clear than the same chords played above middle C. When bass traps are added to a room, all three of these problems are reduced...

Continue reading here: https://www.prosoundweb.com/channels/recording/assessing-room-correction-products-dirac-and-acourate/
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