Title :
Sound minimisation for local active control
Author_Institution :
Dept. of Electr. Eng., Nankai Inst. of Technol., Nantou
Abstract :
This paper investigates the performance of the acoustic pressure minimisation over space and frequency. The theory and simulations of pressure minimisation over space and frequency using single-channel and two-channel systems are presented. Constrained minimisation of the pressure is introduced, to achieve control over the pressure in both frequency and space. The results show that good attenuation is achieved at the desired range over space and frequency using a single-channel system. However better performance could be achieved using a two-channel system
Keywords :
acoustic wave absorption; active noise control; acoustic pressure minimisation; attenuation; constrained minimisation; frequency; local active control; single-channel system; sound minimisation; two-channel system; Acoustic noise; Active noise reduction; Attenuation; Bandwidth; Frequency; Microphones; Noise cancellation; Noise shaping; Pressure control; Space technology;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Conference_Location :
Tainan
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412811
