FIR Filter Correction: A Revolution in Active Loudspeaker Performance?
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- เผยแพร่เมื่อ 28 ส.ค. 2024
- In this video we discuss a radical new way of loudspeaker design and calibration that appears to be a game changer and next evolution in loudspeakers. Active speakers have the advantage of doing all of the filtering in the digital domain via DSP while allowing the amplifiers to be directly coupled to the drivers with no losses incurred by passive LCR components. FIR (Finite Impulse Response) filters have the advantage of zero phase or linear phase capability allowing the speaker to be truly phase coherent throughout the entire bandwdith the filters are applied. We discuss the implications of this technology with loudspeaker designer Shane Rich of RBH Sound to help you better understand the advantages of this approach. This video is a must watch as a supplement to my up coming review of the new RBH Sound Active SVTRS Speaker system.
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#audiophile #activespeakers #DSP
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This is a critically important subject and I believe has made the greatest impact to sound quality in last 5 yrs
A great short but sweet video about DSP and active speaker technology today. I would have liked some discussion about the difference between FIR and IIR filters and their respective sonic advantages and disadvantages, maybe get into that on the next segment.
Thank you guys for this video wasn't aware of the big difference between the old tech and new tech and how much more you can do with the new tech and thanks to Shane for bringing us up on some of the calibration techniques
This video is about the future of loudspeaker technology including active filter design and DSP driven FIR filters. We talk with loudspeaker designer Shane Rich about how this tech has propelled the new RBH Sound SVTRS speaker system to the next level in performance and sound. Are you ready for active speakers? Share your experiences here. Don't forget to thumb this video up if you want to see more content like this!
It sounds like I'm way too late to the speaker build party. I was hoping to build my own speakers or modify a pair using Dayton Audio DSP amplifiers. Here: www.parts-express.com/dayton-audio-dspb-250-2x50w-class-d-audio-amplifier-board-with-dsp--325-126
Active speakers are just speakers with built in amplifiers.
@@shangrilaladeda Yes but they have better crossovers than passive speakers. Plus the amp being part of the speakers makes it more cohesive.
Dsp if done correctly well implemented in the active speaker is a game changer. As long as the speaker is well built and has high performance before the integrated dsp is even turned on.
I've been using active speakers and/or various types of processing for about 25 years. That's for pro audio/sound reinforcement/PA stuff and more recently home theater/home studio/living room. I always compare things to what was available in the late 60s to late 70s. Even the modern, inexpensive stuff blows away most of the audio gear that was around 50 years ago, especially speakers. And the failure rate is also very much lower than 50 years ago.
Currently, I'm using a SONAR/Cakewalk with acoustic and speaker correction by Sonarworks Reference, ver. ??.?. Using a Roland USB audio interface/mixer, into Dynaudio BM7 mark III active speakers. And a lot of ok-level acoustic treatment. Sounds fkn good.
My Quad active setup is literally crazy how well it does everything from pinpoint imaging to extreme dynamics.
I completely understand what the upgrade provides and would never have a passive front stage again.
Congrats on being happy with the upgrade.
Now just need to upgrade the Storm to a Trinnov for even more resolution plus 3D mapping lol. Will blow you away even more.
You guys are very friendly when doing tuning of speakers (according to pics) 🤣
Cool stuff. Add some acoustic treatment and it becomes blissful.
Good to know that Don Henley likes DSP. I thought he was a 100% analog guy.
I have a self build active 3way system and use the pc as audio source so I can fir/iir filter as much as I like. I noticed a difference when correcting the excess phase of the mid-high crossover only for higher slopes (>8th order) and only with click noises.
Crossovers and phase-response are interesting topics and I would love more videos on the topic, but this video is only promotion of that guys loudspeakers that makes it seem as if fir-filters are a magic sauce that you only get when buying his speakers:(
I mean there is allmost ZERO information in this video about what was actually done. I'm just guessing that you are talking about the phase component of the mid-high crossovers here.
Oohh yeah baby 👌👍
Do you do tutor sessions on rew if I pay you. I can’t get this working right and I aged 10 years
We do offer this service. Email us at: info@audioholics.com
I believe DEQX uses IIR filters in my DEQX HDP-5
I got a set of dual 8's both speakers in each box are powered and wired up!
Bic America they look like genes
I know his better but I like mine
To sensitive tho like 120db
Way to sensitive for me but I learned a lot .
More efficient than cables and plugs.
Laptops do a great job for audio work.
Was this a blind test? Was the magnitude response between linear and minimum phase filter sets the same?, were the drivers similarly delayed individually with the minimum phase setup?
Yes on all accounts but the test was single blind.
DEQX uses 'FIR' filters has done for years I've been on the cutting edge for years thanks to DEQX and it does make a big difference
That sofa looks like it needs taking outside into the yard and burning 🔥 😂 😂
Definitely. I sold my theater chairs so these are temporary until I move.
@@Audioholics very nice I'm glad you liked my humour and didn't take it to seriously 😂
It's not cutting edge, i have had it in studio since 2012. 😀
I've genuinely seen untrained ears point out "something wrong" with poor phase linearity.
You don't *need* to tune it out perfectly (brickwall possibly excepted) adjusting by ear can suffice a normie.
You call him Conan O'Brian but Immediately thought he looks Glenn Morshower
Conan the Barbarian!
It’s my understanding DEQX Does Not use FIR FILTERS THEIR TECH WAS NOT UP TO COMPUTE POWER
Most likely you are correct. FIR filters require a lot of computing power which wasn't easily available when DEQX came out.
The problem is when you optimize one location using FIR you can almost guarantee every other listening position suffers greatly. There is no free lunch here. May as well just listen to headphones.
It's true that one location will be the best optimized but it actually improves other locations in space as well. Remember this isn't room correction done on a finished system, this is optimization at the crossover level to best integrate the drivers.
Independent of whether or not the FIR technology in this speakers is also reused to do room correction, the primary goal of this technology is to implement more perfect crossovers: FIR technology enables implementing very steep, almost 'ideal', crossover filters (the faster the processor, the more steep the filter can be) without causing any phase shifts (hence, phase shift problems) that any analog crossover, even simple 1st order ones introduce. In addition, since the amps are connected directly to the drivers, without having to pass through inductors, resistors and capacitors of an analog crossover, there is much less resistance in the path so better 'control' of drivers by the amps.
The math doesn't lie, FIR opens path to level of performance unachievable by any other means for now, it can also be used as a final ultimate cherry on top of already optimized system