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Svantek SV 971A
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SV 971A User Manual – Appendixes
215
Effect of reflections and diffraction of the acoustic plane wave from the case of SV 971A (“Case Effect”)
Table C.1.7. ACO 7152 and SV 971A typical frequency characteristics
Frequency
ACO 7152 typical
Free Field response
SV 971A typical
Free Field response
SV 971A
Case Effect
Uncertainty
(IEC 62585:2012)
[Hz]
[dB]
[dB]
[dB]
[dB]
251
0.06
0.13
0.07
0.25
259
0.05
0.09
0.04
0.25
266
0.05
0.06
0.01
0.25
274
0.04
0.04
0.00
0.25
282
0.04
0.03
-0.01
0.25
290
0.04
0.03
-0.01
0.25
299
0.03
0.04
0.00
0.25
307
0.03
0.06
0.03
0.25
316
0.04
0.10
0.06
0.25
325
0.04
0.13
0.09
0.25
335
0.05
0.14
0.09
0.25
345
0.05
0.14
0.09
0.25
355
0.05
0.13
0.07
0.25
365
0.04
0.11
0.07
0.25
376
0.03
0.09
0.06
0.25
387
0.02
0.06
0.04
0.25
398
0.02
0.04
0.02
0.25
410
0.01
0.04
0.03
0.25
422
0.01
0.08
0.07
0.25
434
0.01
0.13
0.12
0.25
447
0.01
0.15
0.13
0.25
460
0.01
0.14
0.13
0.25
473
0.01
0.14
0.13
0.25

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