Error in rotating sound source localization caused by installation deviation of microphone array

The localization error caused by three types of common array installation deviation, namely angular deviation, x-axis offset deviation and z-axis offset deviation was studied in detail in the rotating sound source localization. Research showed that when angular deviation was within the range from -10° to 10°, the position error varied approximately linearly with the angular deviation, the maximum positioning error was 0.089 m, the strength error was randomly distributed, the minimum strength error was 0.97 dB and the maximum strength error was 4.69 dB; when x-axis offset deviation was within the range from -0.1 m to 0.1 m, the position error varied approximately linearly with x-axis offset deviation, the maximum positioning error was 0.098 m, the strength error was randomly distributed, the minimum strength error was 0.91 dB and the maximum strength errors was 4.94 dB; when z-axis offset deviation was within the range from -0.1 m to 0.1 m, the maximum positioning error was 0.01 m, strength error caused by the positive z-axis offset deviation was smaller than the negative z-axis offset deviation generally, the minimum strength error was 0.81 dB and the maximum strength error was 4.51 dB. Research results can provide guidance for controlling the localization error of microphone arrays in practical applications.