On the method of the noise source detection  Utilization of digital signal processing
Abstract
Some methods to estimate the contribution of a noise source to the observed noise and to evaluate the acoustic properties of the noise source and the transmission path are described. It is assumed that all the noise sources are kept in operation. It is shown that the cross spectrum and the coherence function are effectively used in the case where the source signal can be measured. For the case where the source signal cannot be directly measured, spatial signal processing is used and discussed in terms of appropriate methods such as a multimicrophone system, a moving microphone system, and a method for discrimination of aircraft noise. All the methods described utilize digital signal processing.
 Publication:

InterNoise 78: Designing for Noise Control
 Pub Date:
 1978
 Bibcode:
 1978nce..conf..915K
 Keywords:

 Digital Techniques;
 Noise Generators;
 Noise Measurement;
 Signal Processing;
 Aircraft Noise;
 Cross Correlation;
 Fourier Transformation;
 Microphones;
 Power Spectra;
 Sound Propagation;
 Spectrum Analysis;
 Acoustics