Variable Resonator Cap for User-Definable Microphone High Frequency Response

Grigg B. Variable Resonator Cap for User-Definable Microphone High Frequency Response. J Audio Eng Soc. 2022;70(4):319-322. doi:10.17743/jaes.2021.0063

@article{Grigg2022_21568,
  author = {Grigg, Benjamin},
  title = {{Variable Resonator Cap for User-Definable Microphone High Frequency Response}},
  journal = {Journal of the Audio Engineering Society},
  volume = {70},
  number = {4},
  pages = {319--322},
  year = {2022},
  month = apr,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2021.0063},
  url = {https://doi.org/10.17743/jaes.2021.0063}
}

TY  - JOUR
TI  - Variable Resonator Cap for User-Definable Microphone High Frequency Response
AU  - Grigg, Benjamin
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 70
IS  - 4
SP  - 319
EP  - 322
PY  - 2022
DA  - 2022/04/06
DO  - 10.17743/jaes.2021.0063
UR  - https://doi.org/10.17743/jaes.2021.0063
PB  - Audio Engineering Society
LA  - en
AB  - Resonator caps have been used for several decades to refine the high frequency response of microphones. These caps create a resonant cavity in front of the diaphragm to extend and shape the high frequency response. This work studies the experimental use of a variable-geometry resonator cap. This cap allows the user to select a desired high frequency response in real time, using only acoustic methods. Data collected in an anechoic chamber shows clear changes to microphone on-axis high frequency response with just small changes to the geometry of the resonator cap. This concept could be applied to allow user-adjustable high frequency response in a microphone, or it could be used as a lab tool to help acousticians quickly find the desired resonator dimensions.
ER  -