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I'm trying to work out what the SPL limit(s) are for my residence, but the way I'm understanding my locals laws makes it seem like any "noise" (ie music heard by a neighbour) is going to be too much noise. Maybe someone here can translate the legalese better than I can, and hopefully prove my...

https://phys.org/news/2025-06-3d-device-white-noise-acoustic.html This sounds pretty interesting. I wonder if something could be devised and attached to the back wall that directs the bass waves away through a door or the ceiling etc? There's a few comments about the article on HackerNews. One...

Was just browsing FB marketplace the other day and spotted some for sale. The sheets were 20mm thick, dimension 990 x 1560mm, and the description; Plywood Honeycomb Core Panel is a new type of innovative 3 layers composite panel, with two plywood (wood) sheets as skins & an honeycomb core...

I was just browsing some local stores and saw some RCF Ayra Pro speakers for pretty cheap, and they have "FIR 0-phase DSP" - so presumably a decent "DSP chip" inside them. And that got me wondering, if people are selling these with blown speakers/amps/etc, that maybe the DSP part of it could be...

Just wondering what it would do? I've got some old 6.5" woofers here and was mucking around with winISD to get a box design so that I could try them out as "cardioid" helpers with my bookshelfs. But then I just had the thought - what would the drivers do in an open tube? Kind of like the LXmini...

I already have a pair of studio-monitors for stereo music playback, and with all the sales that are going on at the moment, I'm thinking about buying a 3rd in case I ever want to use them for home theater duties (in LCR config). And if I have 3, I could also try out mid-side stereo playback. So...

I've been eyeing off some PA speakers to try out for home duties, and managed to snag some QSC CP8's for a fantastic price. Their EASE / GLL data looks pretty decent compared to similarly priced rivals (for example, they are generally a bit cheaper than Yamaha DXR10's, but I got them for only a...

I was just browsing some studio/pro-gear websites and came across the Audient EVO 16, which might interest some people. It seems to have all the necessary/desired features for doing "multichannel" playback from a PC (multichannel suitable for DSP xover/EQ/etc). It's got 8 balanced outputs, a...

Since the time I read Amir's review of JBL SRX835, I've been researching and day dreaming of using PA speakers and subs. About the subs though - when I previously looked at specs of reasonable quality entry level models like Yamaha DXS12mkII, it's rated at 42Hz at -10dB, which doesn't sound...

My pair of Fosi V3 Mono amps have finally arrived (well, they're at the post office waiting for me to collect them). I bought them to get my tower speakers back in to action, because they've been sitting dormant for a few years now. They were good value 3 way speakers from a now retired Aussie...

I'm going to do my whole front wall in "fluffy" insulation. I recently looked up some material options at my local hardware store (Bunnings), and here are those specs; Edit: The only decent ones in stock today at my local are R3.5 ceiling batts, R2.0 wall batts, and R2.0 rolls. The wall batts...

I've got quite a large music collection that's been growing for over 20 years, and it's been getting hard to keep it "useful" with regards to shuffling, but I think I've come up with a good system now. I use MusicBee to view and play my collection, and leverage it's "auto playlists" (filters)...

The other day I was testing the response of one of my speakers at different distances from the side wall. I've been looking at the results in different ways and thought to use FDW (frequency dependent window). The 2 and 3 cycle windows showed 2 specific nulls that steadily lowered in frequency...

I was just reviewing my own speaker measurements, for my right speaker in particular, which happens to sit next to a window recess. I saw strange areas on the Decay plot that didn't align with room modes, like the 0/20/40ms slices being lower SPL than the 60+ms slices. So I picked one to...

As per title. When I export REW's measure in-room IR and convolve it with tones of the same frequency (Edit: Frequencies about a room mode in particular) but different length, the SPL increases. So my question is - is REW's SPL graph based upon either a "dirac impulse" or 1 cycle tone, OR the...

I can't work out what the cause of this null is on the REW Room Sim. I think it is something "room length" related, because absorption on the other surfaces doesn't affect it. As the screenshots show (taken from this thread/discussion), the frequency decreases as you move away from the back...

The button for indenting text appears to be missing from the current text toolbar, but indenting is still handled by the forum when manually writing the BBCode like this. I've got the habit from other forums of formatting text quoted from other webistes with an indent, like in the following...

So I measured my speakers (Kali IN-8 V2) in room, with UMIK-1 located roughly in the middle of my head position, and with it orientated vertically and with 90° cal file applied. In REW I then applied a HPF to Harman room curve and EQ'd to that line, and the resulting measurement got much better...

My DIY subwoofer isn't sounding the best and I'm not sure what the problem is exactly (how to identify it via tests/measurements). The problem is in the higher bass region, above 50Hz, and is affected by where I set my DSP LPF. The problem is it has a sort of thump sound to it that doesn't sound...

This is just a thought experiment, but could something like the title be done? Could a microphone be set up some distance closer to the source (neighbours property) to record the incoming sound, and then processed through a device, and finally a cancellation tone be output on your own speakers...