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Need help about noise cancelling Microphones

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Need help about noise cancelling Microphones

Postby RaseelJ on Tue Jul 18, 2017 6:11 am

I have assembled a noise canceling Microphone using EK-28522-C25 single supply yet ( for an example https://www.icrfq.com/part/351-EK_28522_C25.html )
I am experiencing issues understanding the noise canceling Circuit IC.

It contains the EK-28522-C25, (Frequency-100Hz ~ 6kHz - -54dB ±3dB @ 74dB SPL) with 1.3v.

Sensitivity W/M 54db±3dB-74dB SPL between 65db±5dB-85dB
Air pumping Capacity 7mm³ and fo 480Hz
Frequency Range 450-8000Hz
Maximum Sine Power 10mW
SPL 110dB max sine power

Can anyone please help me the detailed of noise canceling frequency?
Regards,
Jack
RaseelJ
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