Digital loudspeaker array for electric-to-acoustic signal conversion

摘要

Each digital loudspeaker (8) in a two-dimensional array has an earthed connection (9) and a second input (10) with an individual line (11) ton an address unit (2) capable of exciting each transducer in isolation according to the amplitude of the electric signal. The many small transducers replace the conventional single analogue loudspeaker and have two mechanically different states as well as a neutral state. With an increase in momentary value of the input voltage an increasing number of transducers in the array are excited, and conversely.