Transducer utilizing sampling

摘要

A transducer for generating pressure waves from electrical signal waves, in air, water or other fluid, which consists of a plurality of orifices in a vessel containing the transmission fluid under pressure, each orifice being controlled by a valve, which in turn is controlled by one of a plurality of output leads from a quantizing circuit, which is activated by samples of the signal wave taken at the Nyquist rate or faster. A quantized sample of a given amplitude causes a valve or valves covering orifice or orifices to open, to permit an emission of fluid, proportional in energy to the energy contained in the quantized signal sample.