...Derek Kuo; Y. C. Shiah; Jin H. Huang This paper presents a modal analysis and the sound pressure field for the vibrator membrane of an actual portable loudspeaker. Unlike the conventional way to model the membrane’s edge under a simply supported condition, the present approach takes the glued edge...

... control system in which secondary acoustic sources (loudspeakers) and pressure transducers (microphones) as error sensors are used, several optimization strategies have been proposed. These strategies usually rely on partial approximation to the problem, focusing on the study of number and localization...

... exceptions: (1) Acoustic transducers (microphone and speaker) cannot be truly collocated, and (2) the acoustic actuator (loudspeaker) has significant dynamics. The speaker dynamics can affect performance and stability and must be compensated. While acoustic modal control approaches are typically not sought...

... the preliminary scheme of the GA procedure (dashed line: uncompensated; solid line: compensated using the GA design) loudspeakers genetic algorithms acoustic radiators array signal processing acoustic signal processing Figure 1 shows a linear speaker array and its signal processing unit...

... and Sound for publication in the JOURNAL OF VIBRATION AND ACOUSTICS . Manuscript received August 2003; Revised January 2004. Associate Editor: R. F. Keltie. 01 August 2003 01 January 2004 30 07 2004 piezoelectric transducers loudspeakers acoustic generators acoustic intensity...