Title :
Use of the crosspower-spectrum phase in acoustic event location
Author :
Omologo, Maurizio ; Svaizer, Piergiorgio
Author_Institution :
Ist. per la Ricerca Sci. e Tecnologica, Trento
fDate :
5/1/1997 12:00:00 AM
Abstract :
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×6 m area
Keywords :
acoustic noise; acoustic signal processing; acoustic transducer arrays; array signal processing; delays; direction-of-arrival estimation; microphones; reverberation; spectral analysis; acoustic event location; crosspower-spectrum phase; crosspower-spectrum phase analysis; microphone array system; noisy environment; reverberant environment; time delay estimation; Acoustic arrays; Acoustic noise; Acoustic sensors; Array signal processing; Delay effects; Delay estimation; Microphone arrays; Position measurement; Sensor arrays; Working environment noise;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
