Engineering Stack Exchange
Engineering Stack Exchange

Questions tagged [sound-isolation]

31 questions
14
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5 answers

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 defense spending levels. This is a thought experiment…
Jimmy Hoffa
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2 answers

Simplest way to reduce low frequency noise from windows

Could you please advise the simplest method to reduce low frequency noise from windows? The problem: Somewhere outside there is a source of noise with frequency of 166 Hz. I can’t neither find nor remove it. This could be ventilation hoods on other…
Damir Tenishev
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6
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2 answers

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 "speaker" to hear the music, but as soon as you step…
Zorgatone
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5
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2 answers

How to build apartment floors/ceilings to not transfer sound?

How do new apartment buildings build their floors/ceilings to prevent the transfer of sound between people living above/below each other? Note: I'm not asking about how to soundproof an existing structure. I'm asking how a structure should be…
Michael Altfield
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5
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8 answers

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 bottom), or just plays a sound speaker on low…
NightRider
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4 answers

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 windows and doors. So I am thinking of building a…
Torbjørn Kristoffersen
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3
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7 answers

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 frequency response. The peak was at 50 Hz. After a while,…
Ufuk
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3 answers

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, it must capture the sound coming from the speaker…
akm
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2 answers

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 block light and sound: My concern is that I will…
John
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2
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1 answer

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 exactly is tonal masking?
Eng. Yvan Ngassa
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2 answers

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. Inside this box I have a few electronics that has a…
Martman
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1 answer

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 method (just fitting on to the pipe) for flow…
Taha
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Is my procedure applicable to make a room soundproof?

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 thickness) inside them. To make it clear, think of my…
user9761
2
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1 answer

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 inside the intestines) only a very small amount is…
dronus
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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 made of wooden beams topped with a laminate floor:…
phdoerfler
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