I’m currently trying to get the hang of electronics and sound production and I come acrosse “impedance issues” from time to time… For instance, “a preamplifier might load the microphone with low impedance, forcing the microphone to work harder and so change its tone quality” or a contact mike having a low amount of bass because its impedance doesn’t suit the amplifier…
Can anyone help me?
In: Physics
To impede something is to get in its way or delay it.
Sound and electrical current both resonate or travel in waves. i.e. they have a frequency. When you try to push sound or current through at a similar frequency, it’s easy because there’s nothing pushing back. If you try to push something through at a different frequency, you get impedence – the sound or electricity is trying to move one way, you’re trying to push something the other way.
Imagine pushing a child on a swing – it’s a lot easier if you push at the same frequency as they are swinging. If you try to push forward as they are swinging backwards, a lot less of your energy ends up moving them forwards.
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