3M Version A: QE7052 Table B.11 Pressure Field to Free Field Corrections, Table B.13- Broadband

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Microphones

QE7052 microphone (Figures/Tables “B”)

Table B.11 - Pressure Field to Free Field Corrections

		BK4936
Frequency		Correction
in Hz		in dB
125	0.04
250	0.00
1000	-0.21
2000	0.14
4000	1.29

Table B.12 - Pressure Field to Random Incidence Corrections

		BK4936
Frequency		Correction
in Hz		in dB
125	0.05
250	0.00

1000-0.09

2000-0.06

40000.60

Self Generated Noise

Table B.13- Broadband

SPL	LEQ
	Fast Response

				A	C	Z
Range (dB)	A Weighting	C Weighting	Z Weighting	Weighting	Weighting	Weighting
-20 to 70	22.4	30.8	37.8	22.4	30.8	37.9
-10 to 80	22.4	30.6	37.8	22.3	30.7	38.4
0 to 90	22.3	30.2	37.3	22.3	30.5	38.3
10 to 100	22.4	30.5	37.9	22.4	30.6	37.9
20 to 110	23.0	30.5	38.3	23.0	30.7	37.9
30 to 120	26.7	31.3	39.0	26.6	31.4	38.3
40 to 130	34.2	35.3	39.8	34.2	35.3	39.4
50 to 140	43.0	43.0	43.6	43.1	43.0	43.6
		Slow Response
				A	C	Z
Range(dB)	A Weighting	C Weighting	Z Weighting	Weighting	Weighting	Weighting
-20 to 70	22.4	30.7	34.7	22.4	30.7	38.6
-10 to 80	22.3	30.5	34.7	22.3	30.5	38.5
0 to 90	22.3	30.7	34.7	22.3	30.6	38.3
10 to 100	22.4	30.7	34.7	22.4	30.6	38.5
20 to 110	23.0	30.6	35.0	23.0	30.7	38.4
30 to 120	26.7	31.5	35.0	26.7	31.5	38.5
40 to 130	34.2	35.3	36.9	34.2	35.3	39.6
50 to 140	43.1	43.0	43.1	43.1	43.0	43.5

053-469 RevC

SoundPro models SE and DL Data Addendum