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IASCA
- International Auto Sound Challenge Association
Image Rejection - The rejection of the same signals that can be recieved
at two or more points on the dial of a tuner by a single radio station (ghost, images) . Image
Rejection is expressed in decibels, the higher the number the better.
Imaging - The reproduction of sound accurately so that the listener can
imagine the original enviroment and placement of the original sound sources accurately within
within that enviroment. The better the imaging the more analogous the reproduced
sound will be to the original.
Impedance - The opposition to the flow of alternating current (AC) in a circuit.
Measured in ohms
.
Inductance - The ability to induce an electrical current. Measured in Henrys.
Input Sensitivity Control - Adjusts the amount of input signal being fed to the
amplifier stage to reduce distortion.
Insulation - A material that electrically isolates a conductor
or thermally isolates an object from its surroundings.
Intermodulation Distortion (in loudspeakers) - Is the distortion generated
in single cone speakers when the cone is reproducing a high and low frequency
simultaneously. The high frequency peaks will be flattened off if the low frequency is
distorted in any way.
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