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App note: Understanding microphone sensitivity

Posted on Sunday, August 19th, 2012 in app notes by DP

Analog Devices discusses the sensitivity of analog and digital microphones.

Sensitivity, the ratio of the analog output voltage or digital output value to the input pressure, is a key specification of any microphone. Mapping units in the acoustic domain to units in the electrical domain determines the magnitude of the microphone output signal, given a known input.

This article will discuss the distinction in sensitivity specifications between analog and digital microphones, how to choose a microphone with the best sensitivity for the application, and why adding a bit (or more) of digital gain can enhance the microphone signal.

This entry was posted on Sunday, August 19th, 2012 at 9:00 pm and is filed under app notes. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.

3 Responses to “App note: Understanding microphone sensitivity”

  1. Nathaniel says:

    First link bad format.

  2. R E Gene Grillot says:

    I have an application using an electret mic and have a terrible with noise when brushing the case. How to I suspend an electret to isolate it from noise brushing the case.
    Thanks for your help

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