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Table 1 The mean microphone level outputs (dB) of the FPM and Hy-M30 microphone

From: Feasible pickup from intact ossicular chain with floating piezoelectric microphone

Frequency(kHz) 0.25 0.50 1.0 1.5 2.0 3.0 4.0 6.0 8.0
FPM in vitro* -18.62
(0.4763)
-19.94
(0.7088)
-16.47
(0.5252)
-16.28
(0.4966)
-14.14
(0.5598)
-16.32
(0.6594)
-22.87
(0.6118)
-26.55
(0.7719)
-22.82
(0.8877)
FPM on malleus -49.2 0
(1.81)
-50.77
(1.749)
-35.83
(2.208)
-25.87
(1.517)
-16.59
(1.836)
-16.45
(1.223)
-23.67
(1.894)
-28.86
(1.146)
-22.42
(1.868)
FPM in tympanic cavity -52.21
(0.7639)
-52.51
(0.4267)
-53.15
(0.6175)
-50.26
(0.1644)
-44.96
(0.5878)
-42.77
(0.6612)
-39.60
(0.3746)
-40.32
(0.2733)
-42.23
(0.6295)
Hy-M30 Mic -16.36
(0.3785)
-11.31
(0.4782)
-14.19
(0.2405)
-11.39
(0.4088)
-7.161
(0.1995)
-15.46
(0.3006)
-8.957
(0.3065)
-21.58
(0.3694)
-23.26
(0.5330)
  1. * Mean microphone level outputs of the group of FPM in vitro were quoted from our previous work (see the reference [18]). Here the dB value means microphone level output. 0 dB is equal to 1 volt; the standard deviation of each condition was placed into the bracket.