Electrical apparatus and method for electrically simulating a noise
AssigneeS.A. Andre Boet
InventorsMichel Magnani, Michel Moulin
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Abstract
An electrical apparatus and method for electrically simulating noise resulting from the thermodynamic expansion of a gas inside a chamber whose volume is varied, is characterized in that it comprises, in series, a capacitor of fixed capacitance and means for varying with respect to time the potential at at least one of the terminals of the capacitor, the potential variation depending on the variation of the volume with respect to time and on the nature of said expansion.
Claims9
Electrical apparatus for simulating noise resulting from the thermodynamic expansion of a gas inside a chamber the volume of which is varied and from the flow of gas between the chamber and the exterior thereof, comprising a circuit for simulating the said expansion, said circuit comprising in series a capacitor of fixed capacitance and means for varying with respect to time the potential at at least one of the terminals of said capacitor, said variation of potential depending on the variation of the volume of said chamber with respect to time and on the nature of said expansion, and further comprising an exhaust circuit connected to said expansion simulating circuit, said exhaust circuit comprising in series a fixed impedance and a semi-conducting circuit, said semi-conducting circuit comprising means for varying its internal impedance with respect to time, said variation in internal impedance depending on the variation with respect to time of the mass flow of gas and of the type of flow.
Electrical apparatus for simulating noise resulting from the thermodynamic expansion of a gas inside a chamber the volume of which is varied and from the flow of the gas between the exterior of the chamber and the interior thereof, comprising a circuit for simulating said expansion said circuit comprising in series a capacitor of fixed capacitance and means for varying with respect to time the potential at at least one of the terminals of said capacitor, said variation of potential depending on the variation of the volume of said chamber with respect to time and on the nature of said expansion, and further comprising an intake circuit connected to said expansion simulating circuit, said intake circuit comprising in series a source of fixed voltage and a semi-conducting circuit, said semi-conducting circuit comprising means for varying its internal impedance with respect to time, said variation in internal impedance depending on the variation with respect to time of the mass flow of gas and of the type of flow.
Dependencies are inferred from the claim text.