Performances

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Summary of acoustic terms

  • The mean sensitivity of the MEMS microphones to pressure sound fields is 23 dB re 1 V/pa, (for an amplified circuit)
  • Compared to ½" diameter stem, an 8mm diameter stem provides a significant improvement in frequency response at higher frequency.
  • The pressure of fixing lugs on the masthead has a negligible effect upon frequency response.
  • Aco 3" windshield provides 22 dBA of wind attenuation, when the microphone diaphragm is perpendicular to wind direction, if the wind speed is less than 11 m/s.
  • Self-noise is typically 36 dBA SPL (for an amplified circuit).
  • The effect of ambient temperature change upon sensitivity at 1k Hz is nominally +0.013 dB per °C change.
  • Significant (i.e 5%) total harmonic distortion occurs at 116 dBA SPL (for an amplified circuit).