Episode #125 of the Stack Overflow podcast is here. We talk Tilde Club and mechanical keyboards. Listen now

Questions tagged [acoustics]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
31
votes
4answers
379 views

How to deal with the difference in sound when the audience comes in

For mixing in a small church, with cheap equipment, we have the following problem. When we set up all equipment and do a sound-check, all levels are good and the sound is just very good. When the ...
8
votes
1answer
136 views

Fixing acoustics in a glorified hallway

We have a small radio studio that is essentially in a hallway. When on air, you can definitely hear the room coming through the mics. It sounds like there is a lot of standing wave. Our budget is ...
6
votes
7answers
28k views

What are good alternatives to studio foam for a home studio?

I have built a vocal booth for my own studio and plan to line it with acoustic studio foam (a.k.a., "egg-crate foam"). However, acoustic foam is very expensive (http://www.amazon.com/Acoustic-Foam-1-1-...
6
votes
3answers
2k views

What is the best way to mic a hammered dulcimer?

Looking for some suggestions on getting the most authentic recorded sound from a Hammered Dulcimer. The model I am mic'ing has 2 sound holes. What would be the ideal mic type(s) (i.e. dynamic, ...
4
votes
1answer
265 views

Micing a big square room

I do a lot of remote recording sessions for church choirs. Often they use fellowship halls, which typically have a big rectangular room with a relatively low flat ceiling. Obviously, this is less ...
4
votes
6answers
516 views

Is there a music genre or type of sound to help drown out background noise for the purpose of concentration?

I would like to be able to play something in a pair of headphones that works to drown out the background chatter of, for instance, sitting in a cafe. Is there a type of sound, or genre of music ...
4
votes
2answers
6k views

Planning a simple setup for recording violin

I am an amateur violinist. I would like to start to record my playing, doing the recording myself. I will be playing and recording classical, eastern European folk and Jazz. I would like your help in ...
4
votes
3answers
690 views

How do audio engineers (physically) treat rooms for studios?

Here's my problem: I live in a small apartment downtown São Paulo - it's noisy as it can be. Loud traffic, people screaming and buses circulating day and night. This was never a problem - I usually ...
4
votes
2answers
1k views

Home recording, how to isolate non-constant street car noise?

I moved into this 2 BR apartment on the 5th floor in a building residing in a main street (didn't think about it when I got it ), and even at night (even after 1-3 AM) there's always a car or a truck ...
3
votes
5answers
362 views

Sound design that cuts through crowd noise

I'm about to embark on a sound design project for an interactive piece that will be a public installation. It will always be surrounded by people in a large space (think a trade show floor or lounge-...
3
votes
5answers
2k views

How does our brain detect the direction of sound?

We are able to detect the direction of sound because of our brain's capbility to measures the time lag and amplitude difference between the sound that reaches our ears. However the sound produced by a ...
3
votes
2answers
445 views

Mic Position and Acoustics

Here is a general question for field recording: Do you go to great length to try to position whatever you are recording for best acoustics and mic position? Let's say you're recording an elephant. ...
3
votes
5answers
591 views

Acoustics and Auralex?

I'm about to make a tremendous rework of the acoustics in my studio, and a fix for the 129Hz standing rez-wave that haunts it. Right now I'm looking at Auralex Wedges, considering possibly 4" wedges ...
3
votes
4answers
532 views

How good is your knowledge of acoustics, and how does this affect your sound design?

I'm curious as to how scientific your understanding of acoustics is and how often you draw on this knowledge when designing sounds, editing or mixing. What do you get your calculator out for, and what ...
3
votes
1answer
1k views

Why do I hear less bass in the middle of the room, and can I do anything about it?

I've recently purchased a pair of monitor speakers in order to build myself a better critical listening environment. I've tried setting them up near one wall in a small room off of my living room, ...
3
votes
1answer
79 views

Acoustics exercise

I have been asked to solve this exercise. An environment of $V=1500$ $m^3$, it is considered a reverberated field acoustic pressure level of $70$ $dB$ when an acoustic source of $80$ $dB$ is ...
3
votes
1answer
280 views

Can sample-based virtual instruments and an excellent digital piano recreate tone color?

What I'm essentially asking is to what extent can a digital piano, given reasonably affordable and excellent equipment, replace an acoustic piano. But that's a bit open-ended, and I'm really ...
3
votes
3answers
4k views

DIY Aquaphone material selection

First I would like to say that I really love this place. As a sounddesign student, social sounddesign has been invaluable and a great inspiration! Thanks to all of you for that! Now, on with the ...
3
votes
3answers
7k views

What is the best shape for passive sound amplification

I'm asking this to make a passive sound amplifiyer. In the web they usually do a HORN shape that looks like exponential function mirrored about 'x' axes. But I wonder is there a better shape for ...
2
votes
5answers
480 views

Determine whether resonance/standing waves are from speakers or room?

I have two massive resonances (more than 12db above the response curve elsewhere) with my bookshelf monitors placed on a desk in a large furnished, carpeted room. One is at about 110 Hz and another ...
2
votes
2answers
946 views

What causes proximity effect?

What is the source of proximity effect... the boost in lower frequencies as a vocalist gets close to a condenser mic?
2
votes
2answers
249 views

Home Studio - Making the best out of what I have

It's setup time and I have several options as to where/how to set up my freshly acquired pair of Adam A7. Three rooms in my house have interesting characteristics but not one is perfect and I am ...
2
votes
3answers
2k views

Absorbing Room - materials, their shapes, what's the difference?

Internet is really lacking information about acoustics in the room, absorbing materials, it's shapes and patterns.. how to glue them, why there are different shapes. I really would like to know how ...
2
votes
2answers
4k views

How does a cardboard paper towel roll amplify the sound?

My daughter and I did a project and made this: http://osxdaily.com/2014/07/28/diy-iphone-speakers-paper-towel-roll-plastic-cups/ We hypothesized that the sound was "amplified" because it directed ...
2
votes
2answers
40 views

best material to absorb Sound

The Loft that I live in used to be a city hall building. The hallways and lofts have very high ceilings and have a horrible echo problems. I am considering hanging some type of sound absorption ...
2
votes
1answer
91 views

Purely Mechanical Acoustic Frequency Converter

I'm an electrical guy, so I know how to make a frequency converter electrically. Or by using software through resampling, etc. My mechanical understanding of the world is much more lacking. What I'm ...
2
votes
2answers
127 views

Simulating Resonant Bodies

Background I am working on synthesized patches using a combination of additive and subtractive methods to create a digital orchestra. The goal is not to recreate orchestral sounds, but rather to ...
2
votes
1answer
295 views

Monitor Subwoofer suggestions (economic)

Hey Im l@@kin to invest some money in reference monitors and a sub. Can anybody drop some suggestions for me? My price range is limited to about 600 american dollars and I have a discount ...
2
votes
1answer
27 views

Advice on calibrating complex stimuli that vary in amplitude and also decay over time

So I am finding it difficult to calibrate for a particular signal that changes in amplitude over time, and is randomly presented to a listener over a time span. I have attached a picture of the ...
2
votes
1answer
786 views

what is the purpose of the internal volume of a speaker cabinet

I've been reading a bit about speaker design but I haven't been able to find what purpose the internal volume of a speaker cabinet serves. From what I've read, having an internal volume causes extra ...
2
votes
1answer
936 views

Does the shape of an acoustic/vocal booth matter for maximum isolation?

I am building a vocal booth at home, so I can do voice over work. Now I have some Wood lying around, & will build the booth with wood. I am confused as to, what shape I should build it in? So, ...
2
votes
1answer
116 views

Acoustic Handlings in a Small Room

Dear All, I have a pretty urgent question here that I need to resolve in one of my record rooms: I have a small room about 13 feet by 10 feet with a 10 foot ceiling. The walls all have fabric on ...
2
votes
1answer
209 views

All-in-one CD-receiver vs. component receiver

I am looking for a music system for my living room. I haven't been really listening to the music at home for years (only going to classical music concerts), and now want to bring it back into my life. ...
2
votes
2answers
327 views

Active noise control barrier at tunnel openings in undergroundsubways

I know that Noise cancellation never works on scales larger than the sound's wavelength.but,at underground stations during the train arrival time we experience a lot of disturbance which sometimes ...
2
votes
0answers
129 views

Nice read about reverb [closed]

Not a question, but thought this was an interesting article about some reverb/acoustics in England :) http://www.bbc.co.uk/news/magazine-20773690
1
vote
2answers
132 views

career in acoustics

hello, i am considering shifting my career path towards working in acoustics. in particular architectural acoustics, environmental acoustics and noise control. however, my academic background is in ...
1
vote
4answers
2k views

Acoustic treatment for glass

I have searched for a bit but haven't found much on this but maybe some of you have fixed a similar problem in the past: Can I put something over glass to make it anechoic? It's a long shot, but I ...
1
vote
3answers
4k views

Can noise be reduced by 7 decibels with a curtain?

I would like to reduce noise in my room and found a site selling curtains which can reduce noise by 7 decibels. Is this kind of reduction really possible with just a curtain? I wonder if this is ...
1
vote
2answers
493 views

How to deal with a reverby room…

Hello, Basic question. Was sound engineering in a school hall/food mess and the acoustics were something horrible. Reflection city, which resulted in an extremely muffled (especially the low-end) and ...
1
vote
1answer
196 views

How to improve acoustics of a 16 meter square garage on a budget?

I'll be renting a garage now for practice. It will be used for several bands. The garage size is 16 square meters and it doesn't matter if it's loud outside (these garages are pretty far from the ...
1
vote
1answer
132 views

Portable anechoic test chamber microphone suggestions

For my senior design project, we're creating an acoustical test chamber that will measure the frequency and the sound pressure of the electrical device that is put in the chamber. The chamber won't be ...
1
vote
1answer
54 views

Do I really need to dump tons of sand into the stage i'm building?

I am building a 16x24x3 stage in a 4000 square foot warehouse, to be used principally to showcase music. A local audio guy has told me that I have to fill the wooden framed stage with sand. This ...
1
vote
2answers
36 views

How much should volume change for an empty room vs one full of bodies?

So tonight I'm doing a film screening. The room is small and will have about 20 people in it. The room is already absorbent, with painted wood on the walls, carpet on the floor, acoustic tile drop ...
1
vote
1answer
44 views

Designing a diffuser to direct reflections to side walls

Floyd Toole in Sound Reproduction recommends using a diffuser on the ceiling that should scatter sounds from front loudspeakers that would normally be reflected to the head locations of listeners. He ...
1
vote
3answers
410 views

rock wool absorption

Hi, I want to make my own bass trap and i can not find rock wool in 10 cm thickness. In terms of absorption quality is there any difference to stack two 5cm rock wool plates together to form a 10cm ...
1
vote
0answers
33 views

How to Acoustically Treat kitchen-extension of room?

I have a room layout like this. The red panels are acoustic panels placed around the room, and the squiggly surface is gonna be a curtain. There's an extension at the upper part of the room that used ...
1
vote
0answers
31 views

Directivity index measurement - steps to follow

I am interested in measuring the directivity index of a loudspeaker. I have been looking on the Internet information about the setup, but unfortunately the information I have found so far has to do ...
1
vote
0answers
58 views

Front acoustic absorber placement with in-wall speakers [closed]

I'm building a home theater and plan to use an acoustically transparent screen with in-wall front speakers. Toole's Sound Reproduction book suggests three to four inches thick of acoustic absorber ...
1
vote
2answers
1k views

Reduce bass through wall to neighbour

I like playing loud bass heavy music but I have some problems with a neighbour hearing much of the bass through the wall. I have painted a picture of the situation. The colors are indentified as: ...
1
vote
0answers
68 views

How to simulate crowd noise with acoustic instruments?

How would I simulate the cheering, applause, and whistles of a crowd using acoustic instruments (and possibly amplification)? Preferably it would be nice to limit it to needing 1–2 musicians to ...