Questions tagged [sound-isolation]

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13
votes
5answers
3k views

Are there any materials known to be sound-insulating but thermally-conductive?

Are there any materials known to be sound-insulating as well as thermally-conductive? Cost is not an overriding concern, but preferably costing "reasonable amounts" and much less than national ...
6
votes
2answers
2k views

What device is this, and how does it work?

There is this device I saw when I was a child at a big music store, that makes me curious. It was meant to listen some CDs to try them out before the purchase. You stand under a bell-shape kind of "...
3
votes
3answers
294 views

Will a short brick wall help shield against bass or will it go around?

I have a noisy neighbor (unreasonable and hostile) generating low frequencies that are disturbing. I'm at the point where I realize I need to just build some kind of barrier, and also buy better ...
2
votes
6answers
147 views

Reducing vibration coming from the floor while at sleep

having an interesting issue here. Imagine you live above some mental dude who starts a vibrating device and frames it against its ceiling - my floor (for your imagination, see example of this at the ...
2
votes
2answers
76 views

Will a 3-wall acoustic barrier work or will sound go around?

I have two heat pumps directly outside my house and they are noisy so I am considering the viability of using a sound barrier to block the sound. The acoustic barrier itself will definitely absorb and ...
2
votes
1answer
211 views

Can ultrasonic sound pass through solid medium?

For my electronic project, I have been searching the internet for a non invasive flow meter that does not require disassembly. I have found an ultrasonic measurement technique that use the clamp on ...
2
votes
1answer
78 views

Is my procedure applicable to make a room soundproof? [closed]

Recently I found it essential to make my room soundproof and for this I have worked out the following way: The walls of my room are made of cement. I want to add two glass layers (of different ...
2
votes
1answer
66 views

How to simulate sound emission properties of the human body?

Is there any way to simulate sound transmission properties of the human body with solid materials? While there are several sound sources inside the human body (heartbeat, air flow, bubbles moving ...
2
votes
2answers
87 views

How can I kill the sound as much as possible in a rounded box? Acoustic panels/other option?

(I posted this in the Sound-Design section but got advised to post here instead). I just purchased a 3d printer and I am working on a product with a box that has a hole in the bottom and the top. ...
1
vote
3answers
180 views

Why noise canceling headphones do not attenuate the signal itself?

Noise canceling headphones use a microphone to capture noise in order to cancel the same. The microphone will capture whatever acoustic signal reaches it. Since it is in the vicinity of the speaker, ...
1
vote
2answers
52 views

How to calculate the density of foam required to cushion impacts?

I have a treadmill desk and my downstairs neighbour is complaining about the noise. Specifically the noise made by the impacts of my walking. Unfortunately the floor of my flat is not concrete but ...
1
vote
1answer
64 views

How can you maximize air flow through a sound maze in a HVAC transfer grille?

My house has several transfer grilles like this: Except they have no baffles inside them, so light and sound come through into our bedrooms quite easily. I'd like to put in a sound maze like this to ...
1
vote
5answers
673 views

What can be the reason of the constant 50 Hz sound in my home?

I am suffering from a strange hum in my home. I have just bought my home and living in 3 months. A month ago I've started to hear a humming noise. Then, I recorded the sound and looked at its ...
1
vote
1answer
103 views

What is tonal masking?

I have checked the definition of tonal masking on Wikipedia and google but I saw the definition of sound masking and auditory masking. Auditory masking Sound masking But I want to know what ...
1
vote
0answers
20 views

Latest methods for noise insulation for walls and ceilings?

All I know is for noise insulation, building a party venue for example, inner wall spacing should be about 20cm. Though I don't see how that helps with anything but one frequency and It's harmonics. ...
1
vote
0answers
234 views

What are the limitations of active noise cancelling?

Let´s pretend there is a source of homogenous noise. Up to which decibel level could active noise cancelling be viable to decrease the volume of this noise significantly? Is it like 10, 50, 100 dB?
1
vote
1answer
23 views

Selection of an isolation table

I need to conduct nano-indentation within a glovebox of a split-test cell for battery testing. I know that vibration may be a potential issue, and I should probably buy an isolation table. However, I ...
0
votes
3answers
67 views

Microphone angled waterproofing

We are working on a mounted screen design that will have microphones at the bottom of the screen housing. The screen housing will be sitting at a 10.5 degree angle. So we are worried about water ...
0
votes
1answer
51 views

Using the bitrate value on a calculation is causing contradiction, why?

Do you have any idea on why the Calculation 1 below doesn't match? Reference: Audio buffers: frames, samples and channels ...
0
votes
1answer
69 views

Creating an isolate bed environment for sleeping (to reduce mechanical vibration from floor)

Having a serious issue with mechanical vibration in my home (I call it "mechanical" because its nature is not from sound, but rather from some sort of a device - for clear image whats ...
0
votes
1answer
46 views

How well would viscoelastic damping work between isogrid- or honeycomb-faced constraining layers?

I'm considering doing some experiments with 3D-printed surfaces and sound transmission with constrained layer damping. I've also been thinking about using isogrid or honeycomb interior surfaces, ...
0
votes
2answers
229 views

Most non-sound-conductive materials, especially when abutting conductive material

I was wondering what the most non-sound-conductive materials are, especially where those materials are abutting materials that are sound conductive. For example, imagine a long bar or block, and ...
0
votes
0answers
47 views

How to use Spectroid app to measure low frequency vibrations?

Need to measure how low frequency (vibration) changes when going through different materials. The only possible way found is by using Spectroid app. However, have no idea of what settings to set up. ...
0
votes
0answers
31 views

Why are there no mufflers for water plumbing?

People who live in multi-unit apartment buildings often need to be careful not to bathe late at night, because their neighbors will be able to hear the sound of the water going through the pipes. As I ...
0
votes
0answers
29 views

Formula natural frequency double wall

I started with a book (pdf see here: https://www.pdhonline.com/courses/m104/m104_new.htm) In this book there is the following formulla found $$f_0 = 170 / \sqrt{M_1 * t / (1 + M_1 / M_2)}$$. The ...
0
votes
1answer
2k views

What is the best thin/light material to kill/absorb sound? Sorbothane?

I am currently building a box filled with electronics and I now look to isolate the sound a bit with the lightest and best material out there. What I am looking for is a thin, lightweight and very ...