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IEVref:801-25-03ID:
Language:enStatus: Standard
Term: complex parameter
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Definition: complex quantity representing a real quantity which varies sinusoidally with time (such as sound pressure, vibration velocity, voltage), or the quotient of two such complex quantities of the same frequency, which can be expressed in the form (a+jb) with real part a and imaginary part b, or as a phasor Ae jθ with modulus A and argument θ

NOTE 1 – Throughout this section, all parameters (mechanical, acoustic, or electric) are considered to be complex, unless specified otherwise.

NOTE 2 – The convention of +j is observed here, whereby a positive-going sine wave is represented by Re(e jt-kx)) a mass reactance by +jωM, and a stiffness reactance by -jS/ω. Wave number k = ω/c is the quotient of angular frequency ω by speed of sound c; mass M; stiffness S.


Publication date:1994-07
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