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post #1 of 2 Old 03-24-2017, 04:56 PM - Thread Starter
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Audio Science and Immersive Sound

With so much more to discuss than we could get to last week, I continue my conversation with Paul Hales, founder of Pro Audio Technology. This week, he explains why he believes that audio science is relatively unrefined, leading to lots of dogma, misinformation, uncertainty, and inconsistency. Next, we dive into immersive-audio systems, including the importance of multiple subs and sophisticated bass management and speaker directivity. Also, we talk about measuring sound pressure levels, answers to chat-room questions, and more.

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post #2 of 2 Old 03-27-2017, 06:11 PM
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Thanks for that very informative interview Scott and Paul. In thinking about the last portion where Paul refers to multiple sub bass management, I think there may be a way to pull it off with multiple miniDSP 2x4HDs.

When wanting to implement additional subs to cover the side or rear surrounds, the challenge is that most (if not all) consumer pre/pros or AVR only allow for the traditional LFE channel handoff; which maybe two LFE channels. In dealing with 4 subs and wanting to add 4 more (to cover the side and rear surrounds like the diagram in the video), the challenge becomes how to do it for under $18K. One solution might be that the signal going out from the L&R surrounds (for example) would be set to large and then input into the 2x4 miniDSP from the pre/pro. The signal would next go through individual crossover blocks set within the miniDSP then output into both the speaker and its' corresponding sub (as it is a 1 to 2 split signal; hence 2x4 name). This could then be tailored further by the type and frequency of the crossover from within the software to allow for proper integration. Keep in mind that to pull this off, the pre/pro or AVR needs to be able to send an LFE signal to both the subs connected to the sub out on the AVR as well as to the speaker itself. Once again, this needs to be tested, but the logic seems sound to me. There are now a number of companies making much smaller subs (say 8-10") that could be used in this way if the above holds true.

Any input or corrections on this theory would be welcomed.

Last edited by Jish9; 03-28-2017 at 02:24 PM.
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