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- W2001732139 abstract "Electroacoustics was born as a twin to the telephone 110 years ago. Today electroacoustic transduction involves a sophisticated science and technology. Early in this evolution alternating currents and electrical oscillations were compared to the better-understood mechanical vibrations, but electro-technology advanced so rapidly that mechanical systems were soon treated conversely by analogous electrical circuits. Yet because a strict correspondence does not exist at the microscopic and continuum levels, several alternative analogies emerged so that now engineers confront a lack of uniform methodology, particularly when dealing with distributed transducers. Bond graphs were developed to meet just such needs by treating all physical systems as a set of multiport elements richly interconnected by another set of power bonds, which together enforce continuity-conservation laws for mass, momentum, charge, and energies. Furthermore, to provide self-consistent signal causality and detailed balances of power dissipation and entropy production, scattering variables can be employed at all ports, and wave variables on all bonds. Such characteristic variables and their methods of use were first introduced by Bernhard Riemann in 1860 for finite amplitude sound waves and later reintroduced in the 1940s for microwave circuitry. Some applications are given of this powerful approach to practical electroacoustical devices and systems." @default.
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- W2001732139 date "1986-12-01" @default.
- W2001732139 modified "2023-09-25" @default.
- W2001732139 title "Waves-scatter bond graphs for electroacoustic systems" @default.
- W2001732139 doi "https://doi.org/10.1121/1.2023925" @default.
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