Thick glass (really thick) lenses, no coatings to worry about and no optician to ask right now. After my last go-around with them years ago I wouldn't trust anything they told me anyway. I knew more about what they were/should be doing than they did...
Thanks for the response/info and I'm going to give getting one some serious thought. Of course it would be useful for other things too which is what makes it truly worthwhile.
Thanks. Got them.
Good point. Those cheap electret microphones sold by Radio Shack et al will work in the frequency range, but would most likely be overloaded by such a loud signal.
Joe Gwinn
Yes I know - bad brain late at night. In the 80's I wrote machine language programs to map and generate data points and pure Fourier plots (multiple frequencies and combinations).
Martin
Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net TSRA, Life; NRA LOH & Endowment Member, Golden Eagle, Patriot"s Medal. NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member.
buffalo wrote:
Interesting!
On Sun, 21 Jan 2007 18:51:31 -0500, with neither quill nor qualm, Joseph Gwinn quickly quoth:
Several layers of cloth around the mike should easily work to attenuate the level.
-- History is often stranger than fiction. Fiction has to be plausible. History is what happens when people don't follow the script. --pyotr filipivich, RCM
On 21 Jan 2007 19:54:31 GMT, with neither quill nor qualm, Ian Stirling quickly quoth:
The problem I have with anti-glare/-reflection coatings is that they pick up fingerprints like gangbusters. I don't think they'd last from being cleaned every five minutes. Some coatings, such as anti-scratch, are made from quartz and are tougher.
-- History is often stranger than fiction. Fiction has to be plausible. History is what happens when people don't follow the script. --pyotr filipivich, RCM
I have been very satisifed with lenses treated with the Crizal process.
Or, put the mike in your shooter's muffs, bind the muffs together with a rubber band and vary attenuation with a gap made by a spacer.
Out of curiosity I took a look at the latest Grizzly Catalog and they sell Branson units now. At least the catalog has it marked as "New Item". The least expensive one is only $399.95. Ugh thud...
See:
On Mon, 22 Jan 2007 12:39:54 -0600, with neither quill nor qualm, Don Foreman quickly quoth:
Yeah, muffs should be good for at least 30db at those frequencies.
-------------------------------------------------------------------- Unfortunately, the term "Homo Sapiens" is a goal, not a description. ----
On Mon, 22 Jan 2007 12:35:52 -0600, with neither quill nor qualm, Don Foreman quickly quoth:
Looks good!
Hopefully, you don't fit this profile: What most people don't seem to understand is that any paper, including the softest Kleenex tissues, are wood pulp and will scratch lenses. I've seen guys grab one of those brown paper handwipes from the restroom and gouge their lenses with 'em.
Use only a soft cloth, fogging the lens with your breath for lube. Jersey from old (or your currently worn) t-shirts is great. I also rub mine daily with liquid dish soap, then rinse in warm water, drying with a fresh terrycloth dish towel.
-------------------------------------------------------------------- Unfortunately, the term "Homo Sapiens" is a goal, not a description. ----
I have a denim shopcloth that I use when it isn't catching dust from the grinder.
What, no 400 grit sandpaper or buffing wheel handy?
-------------------------------------------------------------------- Unfortunately, the term "Homo Sapiens" is a goal, not a description. ----
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