May 2013
Beginner
528 pages
14h 44m
English
Content preview from Practical Recording Techniques, 6th Edition
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Impedance
Impedance is one of audio’s more confusing concepts. To clarify this topic, I’ll present a few questions and answers about impedance.
WHAT IS IMPEDANCE?
Impedance (Z) is the resistance of a circuit to alternating current, such as an audio signal. Technically, impedance is the total opposition (including resistance and reactance) that a circuit has to passing alternating current.
A high-impedance circuit tends to have high voltage and low current. A low-impedance circuit tends to have relatively low voltage and high current.
I’M CONNECTING TWO AUDIO DEVICES. IS IT IMPORTANT TO MATCH THEIR IMPEDANCES? WHAT IF I DON’T?
First, let’s review some definitions. When you connect two devices, one is the source and one is the load. ...
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