Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration

Cengarle G, Mateos T. Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration. J Audio Eng Soc. 2015;63(10):777-785. doi:10.17743/jaes.2015.0073

@article{Cengarle2015_18041,
  author = {Cengarle, Giulio and Mateos, Toni},
  title = {{Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration}},
  journal = {Journal of the Audio Engineering Society},
  volume = {63},
  number = {10},
  pages = {777--785},
  year = {2015},
  month = oct,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2015.0073},
  url = {https://doi.org/10.17743/jaes.2015.0073}
}

TY  - JOUR
TI  - Effect of Microphone Number and Positioning on the Average of Frequency Responses in Cinema Calibration
AU  - Cengarle, Giulio
AU  - Mateos, Toni
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 63
IS  - 10
SP  - 777
EP  - 785
PY  - 2015
DA  - 2015/10/06
DO  - 10.17743/jaes.2015.0073
UR  - https://doi.org/10.17743/jaes.2015.0073
PB  - Audio Engineering Society
LA  - en
AB  - When measuring the response of a loudspeaker by averaging multiple points in a room, the results typically vary according to the number of microphones employed and their positions. This report focuses on the application to cinema calibration, where one critical goal is to achieve consistent perceived loudness and frequency response between dubbing stages, where content is produced, and the various theaters where it is exhibited. It is shown that averaging converges to a compromise response over the relevant listening area at a rate inverse to the square root of the number of microphones employed. Experimental results confirm the predicted scaling of the deviations, and quantify their magnitude in typical rooms.
ER  -