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RE: Doppler Effect in amplifiers

Roger,

your approach sounds like the reverse of analogue (UK spelling) computing used to simulate mechanical systems before the advent of multi-body system dynamics (MBSD) 30 years ago. MBSD is of course reliant on numerical integration and therefore an approximation of reality and sensitive to initial conditions - and capable of correlating large non-linear systems with measured results (350 DOF being typical of a car model).

As a side bar the mechanical equivalent of the inerter (a non-grounded capacitor) has been used in Formula 1 racing for the past few years and will reach road cars via Penske some time soon.

Using numerical methods to simulate non-linear circuits is not unique, although many FE packages now include (linear) circuit simulation as a add-on - limiting understanding yet again to the frequency domain typical of classical Electrical Engineering.

Would I be correct in saying that your approach is to simulate time domain impulse (1kHz tone) inputs to the system and 'tune out' any harmonic and non-linear content on the output waveform?


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