公开(公告)号：EP1346600A2

公开(公告)日：2003-09-24

申请号：EP01270080.3

申请日：2001-12-05

申请人： The University of Warwick

发明人： GREEN, Roger, J ,  HUTCHINS, David, A.

IPC分类号： H04R7/00

CPC分类号： H04R7/06

摘要： A loudspeaker system comprises a flexible paper or plastics diaphragm 1 for displacing a quantity of a transmitting medium to generate sound, waveform-sampling circuitry for supplying a series of sample drive signals of varying amplitude indicative of the amplitudes of an electrical input signal having an audio waveform at a series of sampling points distributed over a period of the waveform, and a piezoelectric actuator 4 for actuating the diaphragm 1 in response to each of the drive signals supplied by the waveform-sampling circuitry to cause corresponding displacement of the transmitting medium such that the combined effect of such displacement by all the drive signals is to produce a synthesised sound wave within the transmitting medium mimicking the waveform of the input signal