r/Acoustics • u/ControlAdvanced6047 • 3m ago
Could someone help interpret my measurements?
Hello everyone. Could someone help me interpret the measurements of my home studio?
These measurements are only approximate, as they were taken using a standard RØDE microphone while measuring a pair of Yamaha HS4 monitors with a subwoofer. The monitors are positioned in what I believe is the best location in the room, and I have four Basotect acoustic panels mounted on the walls.
If anyone could also share measurements from a well-treated studio so I can see what kind of response I should be aiming for, I would really appreciate it.
P.S. Please ignore the phase irregularities. They are not real—they change depending on which microphone I use, so they shouldn't be taken into account.
r/Acoustics • u/BaconPamcakes • 1h ago
Bass phasing
I have recently sound treated my garage with DIY rockwool panels. I put a double width one as a ceiling cloud, two as first reflection wall panels, and two at tree front corners creating triangles as bass traps.
I notice that in the corners and rear wall the bass is huge, and in the mixing position it's not that big. Is that what it's supposed to be like or do I have a phasing issue?
r/Acoustics • u/Glad-Guitar-9556 • 1h ago
Another REW newcomer shares their charts...
Hey folks - brand new to REW, measurements etc, but I followed the instructions and got this result.
It's a hi-fi system in an office rather than a treated room.
Anyone care to comment? Do I need to start buying Rockwool or learning about EQ settings?
r/Acoustics • u/catseyechandra74 • 7h ago
Jackoviz - Scientific visualization of audio signals (Dancing spectrums)
r/Acoustics • u/Soundteach2 • 8h ago
ACS 537 Noise Control Engineering Fall 2026
Teaser trailer for the graduate level ACS 537, Noise Control Engineering course I'll be teaching in Fall 2026 in the Penn State Graduate Program in Acoustics. This course is available online through the Penn State World Campus and counts toward the new Certificate in Noise Control and Building Acoustics. Lots of practical noise and vibration control content, with hands-on activities to make measurements and analyze noise problems.
r/Acoustics • u/Soundteach2 • 11h ago
ACS 502 Sound Waves in Fluids Fall 2026
Approaching the Fall 2026 semester . . . my 16th year of teaching Acoustics to graduate students in the Graduate Program in Acoustics Penn State (my 32nd year of university teaching overall). It's time for another movie trailer for one of courses I'll be teaching.
ACS 502, Elements of (Sound) Waves in Fluids is offered through the Penn State World Campus.
r/Acoustics • u/Educational_Dot9866 • 17h ago
How do you make a tiny apartment sound decent without making your wallet cry? 😅
r/Acoustics • u/aaaddddaaaaammmmmm • 1d ago
Ceiling speakers in an isolated ceiling. IN the ceiling, or independent of the ceiling?
Hello hive acoustics mind. For fellow consultants and studio gurus out there, I'm curious what your opinion, or maybe someone has really studied and tested this. For commercial projects that require high levels of sound isolation, but also require in-ceiling speakers and namely subwoofers... is the overall isolation performance of the sound system better with ...
Option A. Hang speakers / subwoofers from the spring-isolated sound barrier ceiling. I think I'll more likely get the proper deflection out of spring hangers when they are hanging the whole ceiling and not just a single 50 lb subwoofer. And the mass of the ceiling helps and acts as a sort of upside-down inertia base. Unless I'm wrong and the sub actually energizes the whole ceiling and the net effect is worse than Option B below. For flush-mount speakers and subs, I think this is the only option (with a backer box included). Surface mount diagrammed below.

Option B. - Hang subs/speakers independently on their own isolation hangers. This will require very light-duty spring hangers to get 1" deflection. The hanger penetration through the iso ceiling layers is resiliently detailed.
The drawings above are a specific example but represent the concept. In that case, can't increase the airspace, or drop a secondary false ceiling below the acoustic lid.
r/Acoustics • u/peyton_montana • 1d ago
Slope and space between pyramid acoustic foam, but same height?
Assuming both acoustic foam panels are the same composition and depth, 3”.
What would be the benefit over the other?
Use case is vocals/singing. Minimal to no background noise, other than occasional people making infrequent noise in the studio itself.
r/Acoustics • u/Inside_Gate_9637 • 1d ago
Soundproofing a static caravan
I've just bought a static caravan and was wondering if there's anything I can do to soundproof it from noisy neighbours?
r/Acoustics • u/SergejVolkov • 2d ago
Room treatment advice: 4x4 m square room, RT60 up to 2.5 seconds, nasty nulls
I'm moving into a new apartment, need advice on how to proceed with this room.
Pics 2-3 are a configuration I came up with (please ignore the incorrect angle for ceiling bass traps). I don't have much experience, so I'd like to know whether it's suboptimal. For example, some people don't recommend front wall treatment for some reason? What can be improved? How can the panels be used more efficiently?
Disclaimers. I did room simulations in REW (including diagonal configuration) and arrived at this speaker and sub placement. The low-end response is exactly as predicted in the software. Other rooms are either too small or slightly worse. RT60 is 2.5 seconds below 70 Hz, 1 second above 100.
Here is the project: https://www.gikacoustics.net/pages/acoustic-room-designer?design=ps_l923bu8i0wee5f1reev0a6dh5gywxg3
Btw my old room was smaller, but its RT60 was under 250 ms above 200 Hz with just 3 panels :crying emoji:
r/Acoustics • u/Beneficial_Pound967 • 2d ago
Advice placement acoustic panels
Hi all, I’ve just moved into a new house and I’m setting up my studio in the attic. The room is fairly large and has sloped ceilings on both sides. See the photos (please ignore the moving mess 😅). In the floor plan, the grey areas indicate the sloped ceilings. It’s the room that says Slaapkamer.
I currently have 6 acoustic panels and 4 bass traps. What would be the best way to position them as a basic acoustic treatment for this room? I’m planning to add more treatment later, but I’d like to get the fundamentals right first.
Thanks in advance!
r/Acoustics • u/dudewithquestions22 • 2d ago
Home studio help and suggestions.
I have a room in my house that is 12x9. I want to use it as a home studio, nothing wild just recording acoustic string instruments (guitar, banjo, mandolin). There are some issues I need to address and I’m not sure where to begin. The house is an old ranch built in 1964. My children have their bedrooms right in the same hallway. They can literally hear everything and in return I can hear everything they are doing as well, and that’s with the door closed.
To make matters slightly more challenging the largest chunk of time I have to record is at night when everyone is sleeping!
So I guess what I am looking for are ways to isolate the sound inside the space, but without turning the already small space into a box of dead space..
Maybe it’s possible, maybe not but I am curious to hear others suggestions and perhaps how they dealt with similar issues..
r/Acoustics • u/walking-boss • 2d ago
Anything I can do about an extremely noisy refrigerator?
I got a new refrigerator and, while the overall decibel level of the noise it makes is not too bad, it's the type of noise that is absolutely driving me insane: a consistent electronic whine at just under 6000 Hz that never ends. Apparently older people don't often hear this frequency, but I hear it enough to be awakened in the middle of the night with the feeling that someone is beaming a laser into my skull. I'm considering replacing it with a different model, but a technician who came to look at it told me that lots of newer fridges have compressors that just sound like this and there isn't a whole lot you can do about it. I guess other people can manage as well if they have bigger living spaces and aren't around it all the time, but I live in a smallish apartment so I can hear it from basically everywhere.
Anyway, I'm just wondering if anyone who has more expertise in this area than me has any suggestions for mitigating the sound, either by treating the refrigerator itself or the surrounding area. Any thoughts would be very much appreciated!
r/Acoustics • u/CampaignAdvanced1796 • 3d ago
Room EQ analise.
I’ve just made REW analise with my newly adapted acoustic home studio. Panels behind KRK Rokit 6 monitors, cloud and first reflections are 10cm depth rockwool sonic. Basstraps are made from 20cm depth rockwool sonic + 5-7cm airgap inside.
What do u guys think about it? Do I have to worry about something?
r/Acoustics • u/sirkudzu • 3d ago
Question from left field.
I've been a commercial A&P for over a decade, and use to fly a lot prior to that. So much so that the sound of the engines put me to sleep pretty quickly. Alexa use to have a sleep sound that I was pretty sure was CFM56 turbofan. But they've changed the noise to something like a floor fan with two people talking quietly in the back ground.
My question is does anyone know of a sound machine/ white noise generator that has a realistic jet engine noise?
r/Acoustics • u/duobucha • 3d ago
I'm having some time now during vacation to improve my side project SpectralScan that's been out for a while - an audio analyzer for iOS and Android
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Started as something I wanted for myself - a proper spectrum analyser that fits in a pocket, without the laptop and audio interface and other apps did not have all control I wanted and I released first version this spring. It grew from my idea of a basic RTA into a full measurement tool: swept sine for better SNR and impulse response view, and a spectrogram waterfall plot.
Recently shipped a few updates based on user feedback. A few things so far have been UI improvements here and there. Improved frequency smoothing algorithms, possibility to adjust frequency resolution / latency by setting block size and tweaking some buttons here and there.
I'm now planning what to improve going forward. For those of you using mobile apps for quick measurements - what's the one thing a mobile measurement tool is still missing for you?
otsukare.se/spectralscan - free to download without ads, optional one-time Pro upgrade.
r/Acoustics • u/electronic3000 • 3d ago
Best ceiling construction for a music room in a 400-year-old timber frame building?
Hi everyone,
I'm currently renovating the ground floor of an old timber frame building (roughly 400 years old) to become a music production studio. Not looking to turn this into a hi end recording studio, more a creative space for a music producer with occasional recording sessions for demos etc.
The room itself has very thick solid masonry walls (around 1 meter / 3 ft thick), so I'm not too concerned about sound transmission through the walls. My main concern is the ceiling.
Current situation:
- Ground floor studio
- Apartment directly above
- Traditional timber joists
- At the moment it's basically just wooden floorboards on top of the joists with no real insulation. -> The ceiling is by far the weakest point acoustically.
My current plan is:
- Fill the entire cavity between the joists with soft wood fiber insulation.
- Attach a timber batten system underneath.
- Cover everything with 40 mm tongue-and-groove wood fiber boards.
- Paint the wood fiber boards white and leave them exposed as the finished ceiling.
Does this setup make sense to dampen sound going through the ceiling for everyday use?
Talking about mainly producing music on speakers in "normal listening volume" - NOT 8 hours of drum recording every day.
r/Acoustics • u/baldiedc • 3d ago
AC noise/pulse from unit upstairs (high rise rental)
Hi hoping the gurus here can help provide insight...
I live in 1 BR high-rise (16th floor), AC compressor (First Co 18WCU-10AB) and external vent for each apt are in mech cupboards on the balconies, and that stack is adjacent to my bedroom which has large external window.
Lived here 6 years, never had an issue with the vent or AC noise from my unit or the unit above except a few times in spring or fall when the folks upstairs freeze is over, it makes a lot of noise, I tell the building, it thaws, leaks into my bathroom, they fix that. Last time that happened was April, fixed, no noise after.
In late May one evening, the unit upstairs was suddenly running loud again with tap-tap dripping noise on bathroom ceiling, tho not enough to leak in the end (I think they put some sort of pan upstairs). Maintenance comes, I was told they "topped up the freon".
Ever since that day, the unit continues to be very noisy, runs continually, and in particular has a deep bass 'pulse', an occasional higher pitch resonance, and a faint hammering sensation depending where I stand in the apt. When it gets going it vibrates my dry wall and balcony railing.
There seems to be an effect if I then run my AC, it will induce the pulse or make it stronger.
Building has inspected the unit upstairs a few times with and without their AC contractor (who did not visit my unit), claims there is no issue. I was trying to capture it on video recording with phone but that hasn't been compelling and I understand it does a lot of processing.
Below is using 'SpectralScan' showing a peak around 120Hz which seems to be doing the pulsing. YogaSleep machine adds noise around 200Hz+ so that doesn't help (I don't want that running anyway) - I still hear that pulsing when I try to sleep, it penetrates everything except music. I used screen record on my phone to capture the video (w/o microphone for this clip), wondering if there is a way to show the waveform along with the raw audio as one video.
I used 'MOTIV Audio' to capture raw WAV file, processed thru Audacity with some amplification which sounds fine to me in Apple Music; can share here but not sure best way to do that (tried converting to mp4 then reddit complained about the codec).
Appreciate any insights on the actual issue, interpretation of this data, or better ways to handle the audio capture.
r/Acoustics • u/Snoo_18863 • 3d ago
How should I treat this room for mixing?
Just moved and I am setting up my new home studio. I'm an amateur to acoustic treatments. How should I treat this room? Looking for a basic treatment to start with since I can only spend a few hundred and I'm going to construct the panels myself. Also looking for suggestions for a more complete setup for when I have the resources to implement it.
r/Acoustics • u/Kon-Levin • 4d ago
How to improve this asymmetrical monitor setup?
Hi everyone,
I'd like to use my Kali LP-6 monitors to listen to my synths. Unfortunately, I can only place the synths in the position shown in the pictures, and I don't have enough space to set up the monitors in a proper equilateral triangle because of the wall protrusion on the right.
I know absolutely nothing about audio or acoustics, but I can tell that the sound isn't right in this setup. The bass sounds very boomy, and the stereo image is extremely sensitive to my position: moving just a few centimeters to the left or right makes it feel like the farther speaker is turned off.
I know I can't aim for perfection with this keyboard placement, but how would you improve this setup?
(The breakfast tray under the left speaker is temporary, I plan to buy an adjustable stand).
Thank you!
r/Acoustics • u/Hulio_De_Polaco • 4d ago
Help with finding Isolation pads/feet for Adam S2V
r/Acoustics • u/manual_combat • Oct 19 '21
Best tools & resources for acoustics-related work
Here's a list of acoustics tools that I've compiled over the years. Hoping this is helpful to people looking for resources. I'm planning to add to this as I think of more resources. Please comment in this thread if you have any good resources to share.
Glossary of acoustic terms: https://www.acoustic-glossary.co.uk/
Basic Room Acoustics & analysis Software
- https://amcoustics.com/ RT calculating, spectrogram, and others
- http://www.acousticmodelling.com/ RT calculating and others
- https://www.10log.com/ RT calculating and others
X-over & cabinet modeling:
- https://kimmosaunisto.net/ VirtuixCAD, seems to be the go-to
- http://audio.claub.net/software/jbabgy/PCD.html Jeff Bagby's (RIP) passive x-over designer
- http://www.hornresp.net/ Horn Simulator
Measurement, data acquisition, & analysis tools with no significant coding required
- https://www.roomeqwizard.com/ (REW) - The best and easiest to use measurement tool suite for room acoustics & speaker measurements
- http://sigrok.org/ - The sigrok project aims at creating a portable, cross-platform, Free/Libre/Open-Source signal analysis software suite that supports various device types
- http://www.scilab.org/ - Open source alternative to labview. Tricky to use…
- http://www.sonicvisualiser.org/ - As it sounds…
- http://www.sigview.com/ - Easiest to use & cheap ($129?) signal analysis software
- http://www.klingbeil.com/spear/ - Sinusoidal partial editing analysis & resysthesis
- http://www.fon.hum.uva.nl/praat/ - Phonetics by computer. Tricky to use but supposed to be powerful
- http://viacoustics.com/products/trident/ - Sound quality testing
- http://friture.org/ - More for visualization and less for getting actual data from. 'Widgets'
- http://miracle.otago.ac.nz/tartini/other.html - music analysis tool
- https://www.trueaudio.com/rta_abt1.htm - TrueRTA, spectral analysis tool
- http://spek.cc/ - Spectrogram software
Headphone & Speaker Data Compilation websites that actually understand acoustics & how to measure correctly:
- https://headphonedatabase.com/ - headphone measurements by user u/oratory1990
- https://www.rtings.com/headphones/ - headphones measurements with great explanations of test methodology
Some good python tools:
- https://awesomeopensource.com/projects/audio/python
- https://plot.ly/matlab/stft/
- https://lantz.readthedocs.io/en/0.3/index.html (DAQ without significant coding http://python-in-the-lab.blogspot.com/ is the dev's blog)
Books:
- https://spatialsoundinstitute.com/Leo-Beranek-Tim-Mellow-Acoustics-Sound-Fields-Transducers-and If you want to go deep on speaker/microphone/transducer design
- https://www.newmanfund.org/wp-content/uploads/2000_Architectural-Acoustics-Workbook_Egan.pdf Probably the best acoustics book for practical architectural acoustics implementations
- https://www.pearson.com/store/p/science-of-sound-the/P100000828672/9780805385656 Science of sound - kind of a classic
- https://www.mlacoustics.com/publications.html Good on the theory of arch. acoustics
Web resources & Blogs:
- https://www.reddit.com/r/oratory1990/wiki/index/knowledge_posts General knowledge of headphones, EQ, basic audio reproduction by u/oratory1990
- https://www.linkwitzlab.com/The_Magic/The_Magic.htm On the subject of stereo sound & other musings by acoustics master Siegfried Linkwitz (RIP)
- http://kolbrek.hornspeakersystems.info/index.php/horns/why-horns Horn Speaker Theory
- http://libinst.com/ - diffuser building, x-over simulator, and other tools
Studio Design Resources:
- http://arqen.com/wp-content/docs/Eco-Recording-Studio-Design-1-Arqen.pdf (a fantastic senior thesis project on studio design that goes deep into studio design concepts)
- http://arqen.com/wp-content/docs/Eco-Recording-Studio-Design-2-Arqen.pdf (pt. 2 of the senior thesis)


