440 Hz Calibration Frequency (Hz) Level (dB) 46.875000 = -79.643616 93.750000 = -76.972115 140.625000 -73.337639 187.500000 -68.860786 234.375000 -63.382339 281.250000 -56.268997 328.125000 -46.265343 375.000000 = -27.373123 421.875000 -15.617197 468.750000 -16.937248 515.625000 -33.497494 562.500000 -48.890095 609.375000 -58.021030 656.250000 -64.629379 703.125000 -69.884552 750.000000_ -74.218666 796.875000 -77.831520 843.750000 -72.974754 890.625000 -70.339920 937.500000_ -78.784935 984.375000 -88.681404 1031.250000 -91.030579 1078.125000 -92.746010 1125.000000 -93.948326 1171.875000 -96.194336 1218.750000 -96.315918 1265.625000 -76.030678 1312.500000 -67.935555 1359.375000 -71.940002 1406.250000 -95.433189 1453.125000 -102.762810 1500.000000 -104.189278 1546.875000 -104.177498 1593.750000 -104.737076 1640.625000 -106.329849 1687.500000 -106.324745 1734.375000 -102.735527 1781.250000 -101.663414 1828.125000 -105.573967 1875.000000 -107.665421 1921.875000 -106.841141 1968.750000 -100.622993 2015.625000 -100.841072 2062.500000 -105.715057 2109.375000 -103.692932