| Thread | Last Post | Replies |
|
| source tracking problem | 31 Jul 2005 14:59 GMT | 7 |
Is there a way to track a moving speaker using multiple microphones in
a noisy environments. Do I have to assume the speaker is far away the
microphones? I apprecited any information. Thanks a lot.
|
| Outdoor louver noise levels | 28 Jul 2005 13:53 GMT | 2 |
Noise data is published for most supply and return registers and grills
sold for indoor applications. Similar data is not available for
outdoor intake and exhaust louvers. Pressure drop data and water
penetration data is published, but not noise. Typically these louvers
|
| A question related to language | 24 Jul 2005 14:28 GMT | 3 |
There are graphs and and questions in following page, but don't know
whether this is the right group for them. If yes, please help.
http://www.pinyinology.com/gr/zhangfile.html
Thanks.
|
| Acoustic Properties of Asphalt | 19 Jul 2005 21:09 GMT | 2 |
Does anyone know where I can find (or have) the acoustic properties of
asphalt? Denisty, shear velocity, compressional velocity, attenuation?
|
| European to American units: Young's Modulus and Damping conversion | 16 Jul 2005 21:39 GMT | 5 |
I am trying to use a prediction program called INSUL. The Young
Modulus can be entered either in units called GPa or in Hertz*Kg per
square meter. The information from the manufacturer is in Durameters.
What is the conversion?
|
| How do tachyons sound ? ? ? ? | 16 Jul 2005 03:28 GMT | 1 |
Do they sound like a piece of Mozart or do they sound like country music ?
|
| Attentuation of ducts used for dust extraction | 12 Jul 2005 10:21 GMT | 3 |
A friend of mine who runs an engineering company has asked if extraction
duct resonance can be attenuated. These ducts are used for removing all
types of machining dust from cutting equipment - mainly MDF dust.
Since the dust will clog any porous lining inside the duct, what's ...
|
| how to obtain a very high SPI using piezo transducers | 07 Jul 2005 13:56 GMT | 5 |
posted cross
uk.rec.audio,rec.audio.pro,rec.audio.tech,rec.audio.opinion,rec.audio.misc,alt.sci.physics.acoustics,
I am wanting to reach 130+ DB using super tweeters or horn drivers
using 1kH - 25kH variable ultrasonic transducers or tweeters.
|
| STC estimation | 06 Jul 2005 02:46 GMT | 4 |
Hello, I would like to ask about the method of estimating STC values of
double glazed windows. E.g. I look up some textbook that a "8mm-12mm air
gap-10mm" double glazed system has STC of 37 .... based on this data, if I
want to know the STC of a "8mm-7mm air gap-8mm" system, ...
|
| Uncertainty estimation | 04 Jul 2005 06:42 GMT | 1 |
ISO1996 gives indications about how to measure fluctuating and steady noise
but nothing about how to estimate the uncertainty of measurements of
enviromental noise, such as outdoor or inside buildings measurements. I
would like to know the experts point of view on this subject.
|
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