impedance matching


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Related to impedance matching: Impedance mismatch

impedance matching

the force delivered through the mechanical advantages of the lever action of the tympanic ossicles and the areal ratio of the tympanic membrane to the oval window to overcome the acoustic impedance between the ambient air and the fluid in the inner ear.

im·ped·ance match·ing

(im-pē'dăns mach'ing)
The force delivered through the mechanical advantages of the tympanic ossicles and the area ratio of the tympanic membrane to the oval window to overcome the acoustic impedance between the ambient air and the fluid in the inner ear.
References in periodicals archive ?
To judge the effect on the signals, consider the two major reasons for impedance matching:
"Impedance matching is basically trying to match the headphone to the music source or the player that you use.
Impedance matching refers to the requirement that an LNA should present a specific amount of impedance (e.g., 50 [OMEGA]) to the input source and the output load.
Once the impedance matching is accommodated, the resonance conditions need to be tuned as well.
Even though, we could ignore the mutual couplings except the two adjacent waveguides because they have a little effect on the active impedance matching.
Using the scattering parameters as the objective function of the fully coupling matrix extraction and combining the particle swarm optimization algorithm with simulated annealing technique to optimize impedance matching are the goal of this work.
Some of us [10] suggested that linear magnetic gears can provide mechanical impedance matching of a vibration control device, that is, a damper, an active actuator, or a tuned vibration absorber, and be used to multiply its effect in the same way that electrical transformers are used in electrical engineering.
Clearly the parasitic effect is reduced so that the fundamental impedance matching can be realized better by this design.
* Are suitable for power limiting, impedance matching and signal leveling inside RF test systems.
The numerous numbers of slots cause more bandwidth and the optimum feed structure gives the good impedance matching [4].
Efficiently transmitting the output signal from an amplifier to the next stage requires impedance matching on the lines that connect the amplifiers, which, in turn, requires that the lines be of a uniform length.