Electret Microphone + MSGEQ7 Calculator
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ParameterValueUnitsComparisondBSPLVmax Out (peak)ADC Counts
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MicPreampMSGEQ7
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Sensitivity-44dbV/Pa0 dB0.000000180.000000800.2000100941
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Preamp Gain4.5factor10 dB0.000000560.000002530.2000319041
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MSGEQ7 Gain22dB20 dB0.000001780.000008010.2001008641
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ADC Reference5VoltsWhisper30 dB0.000005630.000025340.2003189541
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ADC Counts1024counts40 dB0.000017800.000080120.2010086241
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Offset voltage0.2VoltsRainfall50 dB0.000056300.000253350.2031895442
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55 dB0.000100120.000450530.2056718942
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Conversation60 dB0.000178040.000801180.2100862043
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65 dB0.000316600.001424710.2179360845
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Hair dryer70 dB0.000563010.002533540.2318953647
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75 dB0.001001190.004505340.2567188653
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Alarm clock80 dB0.001780390.008011750.3008619962
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85 dB0.003166030.014247130.3793607978
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Lawn mower90 dB0.005630090.025335390.51895360106
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91 dB0.006317060.028426770.55787183114
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92 dB0.007087860.031895360.60153880123
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93 dB0.007952710.035787180.65053394133
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Sensitivity rated at 1 Pa @ 1kHz1 pascal94 dB0.008923080.040153880.70550739144
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95 dB0.010011870.045053390.76718862157
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96 dB0.011233500.050550740.83639610171
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97 dB0.012604190.056718860.91404817187
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98 dB0.014142140.063639611.00117523205
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99 dB0.015867740.071404821.09893339225
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Rock concert100 dB0.017803890.080117521.20861985248
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101 dB0.019976300.089893341.33169009273
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102 dB0.022413770.100861991.46977716301
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103 dB0.025148670.113169011.62471341333
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104 dB0.028217270.126977721.79855474368
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105 dB0.031660300.142471341.99360791408
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106 dB0.035523440.159855472.21246118453
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107 dB0.039857950.179360792.45801858503
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108 dB0.044721360.201246122.73353852560
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109 dB0.050178190.225801863.04267697623
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Pain threshold110 dB0.056300860.253353853.38953602694
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Emergency siren120 dB0.178038940.8011752310.286198512107
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Jet engine140 dB1.780389398.01175226101.0619851520697
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