Author Topic: Soundproof trumpet box?  (Read 9818 times)

andykowal

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Soundproof trumpet box?
« on: May 24, 2007, 01:02:22 AM »
In order to be able to practice trumpet while my newborn happily sleeps...

I'm picturing a small box (maybe 24" cube) with one round opening for the bell of my trumpet. The opening could have some sort of membrane or elastic curtain to wrap around the horn. Is this a stupid idea, or could it actually work? What materials should I use?

Thanks,
Andy

johnbergstromslc

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Re: Soundproof trumpet box?
« Reply #1 on: May 24, 2007, 11:50:37 PM »
Well, I have been called a grouch on this site, but, yes, it sounds like a stupid idea to me. 

andykowal

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Re: Soundproof trumpet box?
« Reply #2 on: May 25, 2007, 01:13:36 AM »
Um. OK. Thanks for the feeback. Could you elaborate? Why wouldn't it work? I'm a trumpet player, not a soundproofing expert. If you asked me how to increase your upper range without using too much pressure I wouldn't just say you're stupid. I would try to explain a bit about why you're stupid. Thanks so much.

johnbergstromslc

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Re: Soundproof trumpet box?
« Reply #3 on: May 25, 2007, 09:05:28 PM »
How exactly is your plan going to work??  Are you going to put the box around your head?  Or stick the trumpet in the box so no one, including yourself, will hear it? 

Doesn't sound practical. 

The idea of building an enclosure is a good one, but you should think 'big' - a 4 foot by 4 foot by 6 foot box, made modular so you can break it down (and take it with you when you move) has been built and used with some success by people on this forum. 


andykowal

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Re: Soundproof trumpet box?
« Reply #4 on: May 26, 2007, 02:47:17 AM »
Wow, you are a grouch. But I do appreciate your time, so...

Yes, I would stick the bell of the trumpet in the box.

I currently use a device made by Yamaha called "silent brass" -- its a mute that fits into the bell with a jack for earbuds. It definitely makes the trumpet very quiet, BUT it also severely restricts airflow through the horn, so it feels horrible on the chops.

I don't need to hear my sound clearly, I just need to exercise my face muscles the way I do at a gig, without waking up the baby. Believe me, unless its an airtight concrete box I will hear myself just fine. We're talking about a trumpet, not a kazoo.

So forget about whether or not you would want one of these. Can it be done? And if so, how?

Thanks.

bjnash

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Re: Soundproof trumpet box?
« Reply #5 on: May 26, 2007, 05:07:53 PM »
I would build a "Baffle Box": that is a box with enclosed baffles lined with 1/2" foam and filled with speaker fiberglass.  There should be an air outlet at the opposite end so there is no backpressure to the horn.  Such a box, (depending on it's size and number of baffles) should reduce the blas of sound drastically.

The baffles would need to be designed so as to cause the airflow to change direction 45-90 degrees thereby causing a energy loss as sound doesn't change directions easily.

I envision a rather long narrow box constructed of a heavy material like tile backer board or Duroc (Hardware store) Adding wood strip corners inside would allow wood screws to hold it together.

Just an idea that no doubt could be polished to somethng workable...

BJ Nash

Super Soundproofing Co.

johnbergstromslc

  • Guest
Re: Soundproof trumpet box?
« Reply #6 on: May 27, 2007, 08:17:21 PM »
I see now - this box is a piece of 'exercise equipment'.  I thought you wanted a full-volume kind of 'practice space'. 

Since my experience is the full-scale kind of soundproofing, I will obviously bow out here.  I'm sure a 'baffle box' would work just fine. 

I'm assuming the baby will be sleeping in another room, so it might also be a good idea to install a solid-core door with good seals between you and the baby.  If a new door is impractical, get some seals and a sweep on the existing door, at the very least. 

Just make sure you have good ventilation otherwise, cause seals and a sweep will cut off airflow between rooms. 

andykowal

  • Guest
Re: Soundproof trumpet box?
« Reply #7 on: May 29, 2007, 01:42:50 AM »
bjnash, thanks so much for your thoughtful feedback and advice. That sounds like something I could work with. Thanks for your time!
Andy

admin

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Re: Soundproof trumpet box?
« Reply #8 on: May 29, 2007, 02:52:19 AM »
Thanks for your kind words!
Contrary to many with the conventional wisdom, we are not here to just "flog our products", but to try to help spread the word that with our years of expertise, that there are sound control solutions!

BJ Nash - Senior Soundproofing Technical Specialist
Super Soundproofing Co
www.soundproofing.org
888-942-7723

metafizx

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Re: Soundproof trumpet box?
« Reply #9 on: November 30, 2007, 06:57:40 AM »
Hi,

I came across this thread simply because I wanted to do the same thing, make a sound reduction box for trumpet.

My goal is to reduce the sound level to a reasonable level, since I practice my trumpet in the house, and neighbors are fairly close by. Walls here in Hawaii are single wall, solid wood, so the sound transmits well.

When in California, I built a sound reduction room for playing saxophone, however I don't have the room available in my current house (only about 900 sqft). So I have wondered about building a box that would trap most of the sound, and not require a full enclosure around me and the horn.

My basic thought was a "V" shaped box that had baffles along the sides, bottom and top. The reason for the inward "V" shape, thinking it would reduce the reflection off the back wall of the unit. The box would sit on a tripod about horn level (standing), and approximate dimensions of 2 foot square opening. The baffles would be something like anechoic chamber foam, inward pointing baffles to trap sound.

The idea would be to aim the horn into the box, standing fairly close to the opening. I expect the sidelobes of the sound pattern to leak out, but the box would capture the main lobe of the sound output.

I am not pretending to know anything here, as my idea might be completely off.

any thoughts on how this would work or not work ?

 

anything