Title :
Processing of sound field signal of a constrained panel by cross-correlation
Author :
Tan, C.C. ; Hird, C. ; Okada, Y.
Author_Institution :
Queensland Univ. of Technol., Brisbane, Qld., Australia
Abstract :
The application of cross-correlation was tested for its suitability for active noise control of structure borne noise resulted from flexible panel vibration. The results on computer simulation show a great potential for its application in suppression of plate vibration. However in practical applications there are limitations, such as computation of the delay time shift, digital sampling of the driving and response signals and the generation of analog actuating signals at the controller. Even with these limitations, the results show a global reduction of sound power radiated from the plate of between 0.5 to 3.8 dB. An advantage of the technique is its simplicity in operation and ease of implementation
Keywords :
acoustic field; acoustic signal processing; active noise control; correlation methods; delays; signal sampling; vibrations; active noise control; analog actuating signal generation; computer simulation results; constrained panel; cross-correlation; delay time shift; digital sampling; driving signals; flexible panel vibration; plate vibration suppression; radiated sound power reduction; response signals; sound field signal processing; structure borne noise; Acoustic noise; Active noise reduction; Analog computers; Application software; Computer simulation; Delay effects; Sampling methods; Signal processing; Testing; Vibration control;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.647111
