Publisher : The Korean Institute of Information and Commucation Engineering
DOI : 10.6109/jkiice.2016.20.2.268
Title & Authors
Comparison of the Effect of the Interpolation Function on the Performance of the Noise Source Imaging Technology Park, Kyu-Chil; Yoon, Jong Rak;
To find the location of a random noise source present in the three-dimensional space is required at least four microphones. Using four microphones distributed in a three-dimensional space, noise source imaging technique was applied and evaluated on their performance. To compensate resolution problem which comes from both the position of the sensor array is fixed and the sampling frequency is low, up-sampling technique and interpolation function were applied. Five different interpolation methods were applied such as zero-padding, zero-order hold, first-order hold, spline function, and random signal padding. The up-sampling rate were chosen by two, four, eight times, and counting up 16 times. As a result, it was possible to more accurately estimate the position of the noise source according to the higher of the up-sampling rate. It also found that the first-order hold and the spline function`s performance were slightly falling relative to other methods.
R. A. Mucci, "A Comparison of Efficient Beamforming Algorithms," IEEE Trans. Acoustics, Speech and Signal Processing, vol. 32, no. 3, pp. 548-558, June 1984.
B. Friedlander, "A Sensitivity Analysis of the MUSIC Algorithm," IEEE Trans. Acoustics, Speech and Signal Processing, vol. 38, no. 10, pp. 1740-1751, Oct. 1990.
C. H. Knapp and G. C. Carter, "The Generalized Correlation Method for Estimation of Time Delay," IEEE Trans. Acoustics, Speech and Signal Processing, vol. 24, no. 4, pp. 320-327, Aug. 1976.
G. Moschioni, B. Saggin, and M. Tarabini, "3-D Sound Intensity Measurements: Accuracy Enhancements With Virtual-Instrument-Based Technology," IEEE Trans. Instrumentation and Measurement, vol. 57, no. 9, pp. 1820-1829, Sept. 2008.
J. D. Maynard, E. G. Williams, and Y. Lee, "Nearfield Acoustic Holography : I. Theory of Generalized Holography and the Development of NAH," J. Acoust. Soc. Am., vol. 78, no. 4, pp. 1395-1413, Oct. 1985.
V. K. Ingle and J. G. Proakis, Digital Signal Processing Using MATLAB, 3rd ed., CL Engineering, 1999.
J. R. Yoon and K. C. Park, "Design of Three-Dimensional Array Sonar with Equi-Bearing Resolution," Jpn. J. Appl. Phys., vol. 42, no. 5B, pp. uu02084S, May 2003.
J. R. Yoon and S. A. L. Glegg, "Microphone Array Design for Noise Source Imaging," Kor. Soc. for Noise and Vib. Eng., vol. 7, no. 2, pp. 255-260, April 1997.
T. J. Kim, "Noise Source Detection using the Third-Order Stastics : Ms. Thesis, Pukyong National University, Pusan 2001.
K. C. Park and J. R. Yoon, "A Study on the Acoustic Fault Detection System of Insulators from Their Radiation Noises," Int. J. KIMICS, vol. 9, no. 5, pp. 510-514, Oct. 2011.