| Thread | Last Post | Replies |
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| Floating floor efficiency vs impact force | 11 Jul 2006 09:17 GMT | 2 |
As read from textbooks, isolation pads are commonly used in constructing
floating floors. This isolation problem is then analyzed as a simple
spring-mass system under a sinusoidal disturbing force. The isolation
efficiency can be calculated straightforwardly based on the ratio ...
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| 5 gallon musical water bottle | 10 Jul 2006 10:39 GMT | 27 |
I want to make a set of musical water bottles using the typical 5
gallon bottles found on water coolers.
I can excite a REALLY low note by blowing air from a vacuum cleaner
across the top. Unfortunately, I also excite several overtones as well.
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| unviversity | 06 Jul 2006 15:14 GMT | 5 |
I am a Hong Kong student just finished Cert Exam and am interested in
studying acoustic engineering in university, I wonder if there is any
university providing this course? not necessary to be in Hong Kong...
and there is one problem. i did not study AMaths in HKCEE, so i am not
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| Soundproof Box for Sleeping (to protect against noise from a bar) | 05 Jul 2006 10:58 GMT | 3 |
I wish to construct a sleeping area for myself to protect against
the bar which is on the other side of one wall (both in a one-story
building).
I measured 80 decibels (maximum) on my side of the wall. My sleep
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