| 摘要 |
A novel method and apparatus for synthesizing the sound of a heart is disclosed. In the preferred structural embodiment, fluidic principles are employed and a fluidic system is constructed so as to include an oscillator, a controllable amplifier or wave shaping device, and a filling capacitance sound chamber or bladder, all interconnected one to the other by means of flexible and pliable tubing and impedance elements. Audible noise is generated in the system by periodically filling and discharging the sound chamber. Normal and clinical syndrome heart sounds can be synthesized from the audible noise by selectively varying switching of the Coanda air bubble within the fluidic amplifier, the flow rate, volume, and wave shape of the air or other fluid filling into and discharging from the chamber in a predetermined manner by means of adjusting system parameters. The sounds so produced can be monitored and utilized in medical training programs relating to cardiovascular sound diagnosis.
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