Fluid flow control speaker system
AssigneeSony Corporation
InventorsToshitada Doi, Akira Iga, Osamu Hamada, Jyoji Hukuda, Yuichiro Hamada
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Abstract
A fluid flow control system has a fluid source and plural flow pipes connected to the fluid source. Each of the pipes has an opening of a specific area corresponding to one of the bit orders of a PCM (Pulse Code Modulated) input signal. The flow-condition of the fluid through each of the pipes is controlled by the PCM signal without changing the PCM signal to an analog signal. The summation of the outflow from each of the pipes combines to produce an analog flow output signal in response to the PCM input signal.
Claims11
A loudspeaker system responsive to a pulse-code modulated input signal having a plurality of bits ranging in order from a most significant bit to a least significant bit, comprising:
- a plurality of flow pipes, each associated with a respective order of said bits and each having an inlet and an outlet for producing an acoustic output in response to a predetermined flow condition in the respective flow pipe;
- a fluid source for supplying a fluid to each of said inlets;
- control means for controlling said flow condition of the fluid through each of said flow pipes;
- and
- circuit means supplied with said pulse-code modulated input signal for actuating said control means of each of said flow pipes in response to the respective order of said bits of the input signal.
Dependencies are inferred from the claim text.