| Title: | * * Computer Music, MIDI, and Related Topics * * |
| Notice: | Conference has been write-locked. Use new version. |
| Moderator: | DYPSS1::SCHAFER |
| Created: | Thu Feb 20 1986 |
| Last Modified: | Mon Aug 29 1994 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2852 |
| Total number of notes: | 33157 |
I recently acquired an old (Unisync??) sound meter which appears to work fine. However, it has a switch that allows switching between "A" and "C" weighting. Can anyone describe the differences between the two? Is either better suited to identifying levels that may cause hearing damage? What are the intended uses of each weighting? Thanks in advance, Ron
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 2690.1 | ROBOT::RYEN | Rick Ryen 247-2552 TWO | Wed Jul 24 1991 14:15 | 15 | |
If I recall correctly, one is apropriate for noise (jack-hammers, jet-airplanes etc), and the other is appropriate for 'music'. I don't recall the exact differntiation. There is a scientific explaination, but I don't recall it off hand. I may have a pamphlet at home that came with my radio shack model. There was an explaination there. I just recall that I read the pamphlet, set the switch for the setting most approproate for loud music, and promply forgot the details of the reason why (to conserve limited memory resources). I'll see if I can find that little book tonight. Undoubtedly someone with more storage capacity than I will know it off the top of their heads. Rick | |||||
| 2690.2 | RGB::ROST | If you don't C#, you might Bb | Wed Jul 24 1991 14:40 | 4 | |
C-weighting is used in the telephone biz, so it's pretty narrow band,
like 300-3000 Hz. I forget what A-weighting is.
Brian
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