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Radio Shack SPL meter corrections?


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3 replies to this topic

#1 of 4 OFFLINE   David Strand

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Posted July 04 2004 - 09:45 AM

I found the spreadsheets out there that has built in corrections for 1/3 octave or 1/6 octave measurements... But does anyone have a corrections list for ALL frequencies between about 15 and 100? I have the radio shack analog spl meter. I tried searching this forum and the search tool didn't seem to want to cooperate. I'm thinking about getting a BFD soon and got the snapbug worksheet and tones, but I would like to get an idea of my pre-equalized curve with 1hz resolution from about 15-100 or so. Thanks!

#2 of 4 OFFLINE   ThomasW

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Posted July 04 2004 - 10:39 AM

10hz........+20db 12.5hz.....+16.5db 16hz........+11.5db 20hz........+7.5db 25hz........+5db 31.5hz.....+3db 40hz........+2.5db 50hz........+1.5db 63hz........+1.5db 80hz........+1.5db 100hz......+2db 125hz......+.5db 160hz......-.5db 200hz......-.5db 250hz......+.5db 315hz......-.5db 400hz......0db 500hz......-.5db 630hz......0db 800hz......0db 1k...........0db 1.25k......0db 1.6k........-.5db 2k...........-1.5db 2.5k........-1.5db 3.15k......-1.5db 4k...........-2db 5k...........-2db 6.3k........-2db 8k...........-2db 10k.........-1db 12.5k......+.5db 16k.........0db 20k.........+1db

#3 of 4 OFFLINE   Felix_F

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Posted July 04 2004 - 11:27 AM

I setup my BFD for 1Hz resolution from 10-100Hz by taking the correction coefficients that Thomas posted and prorating them for all necessary frequencies.

#4 of 4 OFFLINE   PaulT

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Posted July 04 2004 - 04:42 PM

Jeremy Stockwell Interpolations 10Hz – 80Hz in 1Hz Steps Hz Correction 10...20.0 11...18.25 12...16.5 13...15.25 14...14.0 15...12.75 16...11.5 17...10.5 18...9.5 19...8.5 20...7.5 21...7.0 22...6.5 23...6.0 24...5.5 25...5.0 26...4.66 27...4.33 28...4.0 29...3.66 30...3.33 31...3.0 32...3.0 33...3.0 34...3.0 35...3.0 36...3.0 37...2.5 38...2.5 39...2.5 40...2.5 41...2.5 42...2.5 43...2.5 44...2.5 45...2.0 46...2.0 47...2.0 48...2.0 49...1.5 50...1.5 51...1.5 52...1.5 53...1.5 54...1.5 55...1.5 56...1.5 57... 1.5 58...1.5 59...1.5 60...1.5 61...1.5 62...1.5 63...1.5 64...1.5 65...1.5 66...1.5 67...1.5 68...1.5 69...1.5 70...1.5 71...1.5 72...1.5 73...1.5 74...1.5 75...1.5 76...1.5 77...1.5 78...1.5 79...1.5 80...1.5
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