Thors1982 Posted April 19, 2004 Share Posted April 19, 2004 I have to conduct some kind of experiment in statistics, its very open I just need to collect data. I am going to buy a SPL meter this week and was wondering if anyone had an idea for an experiment with klipsch. Maybe, how the SPL meter changes as I move it closer, or how deep bass gets in explosions in certain movies.... I am not sure because I don't know anything about a SPL meter. If anyone has an idea for a experiment I could do please help me :-) doesn't have to use a SPL meter... but I figured it would be best way to get actual numbers. Surveys of how people like my set-up are out :-/ its a calculus based class so it has to be slightly complex Thanks for the ideas in advanced Link to comment Share on other sites More sharing options...
cyclonecj Posted April 19, 2004 Share Posted April 19, 2004 I shocked my kids one day while I was building my center. I had unscrewed the horn off the mid driver for cleaning, & hooked the driver up without the horn. It could barely be heard. Then I held the horn up to the driver, & suddenly it was LOUD! The same thing can be done with a woofer. Pull it in & out of a sealed box & notice the difference. Even a 4" driver & a cardboard box works for this. Link to comment Share on other sites More sharing options...
damonrpayne Posted April 19, 2004 Share Posted April 19, 2004 If you could get one of those things like they have in the mags that read frequency response +/- db you could do some cool stuff. How about reading SPL of subwoofers in different shaped rooms and outide and such? (I only had to take business stats, sorry!) Link to comment Share on other sites More sharing options...
Thors1982 Posted April 20, 2004 Author Share Posted April 20, 2004 Great Ideas, I definately don't feel comfortable taking apart my klipsch but maybe I can use a cheap speaker. Also, I would love to do the subwoofer one.... but im not sure carrying my subwoofer, up and down the stairs is a good idea since it weights almost 90 pounds :-/ Otherwise that would be my #1 choice Link to comment Share on other sites More sharing options...
Ray Garrison Posted April 20, 2004 Share Posted April 20, 2004 Statistics? How does any of the above relate to statistics? Only thing I can think of using speakers and an SPL meter: what change in dB level is required to insure a xx% confidence level that the subject will perceive a change in volume? And, is this different at different frequencies? What is the standard deviation in dB at which a difference is identified? Given a population of xxx, how many will perceive a difference in a .5dB SPL change, and how many at a 3dB SPL change? The trick with any of these will be ensuring a large enough sample population and properly controlled experimental parameters. Link to comment Share on other sites More sharing options...
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