Radio Shack SPL meter corrections?

Discussion in 'Home Theater Projects' started by David Strand, Jul 4, 2004.

  1. David Strand

    David Strand Agent

    Joined:
    May 10, 2004
    Messages:
    42
    Likes Received:
    0
    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. ThomasW

    ThomasW Cinematographer

    Joined:
    Nov 6, 1999
    Messages:
    2,282
    Likes Received:
    0
    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. Felix_F

    Felix_F Stunt Coordinator

    Joined:
    Apr 22, 2004
    Messages:
    85
    Likes Received:
    0

    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. PaulT

    PaulT Supporting Actor

    Joined:
    Oct 28, 2002
    Messages:
    932
    Likes Received:
    0
    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
     

Share This Page