Use of the crosspower-spectrum phase in acoustic event location
Maurizio Omologo, Piergiorgio Svaizer · IEEE Transactions on Speech and Audio Processing · 1997
The article reports on the use of crosspower-spectrum phase (CSP) analysis as an accurate time delay estimation (TDE) technique. It is used in a microphone array system for the location of acoustic events in noisy and reverberant environments. A corresponding coherence measure (CM) and its graphical representation are introduced to show the TDE accuracy. Using a two-microphone pair array, real experiments show less than a 10 cm average location error in a 6 m/spl times/6 m area.