When you turn down or up the volume on devices with either a wheel or button, what actually happens that allows it to sound quieter or louder?
In: Technology
I’ma tell you what I know, because I made quite a few of these circuits in the past year, someone more knowledgeable should critique me.
Your knob is a potentiometer, which is essentially a variable resistor. By turning the knob, you will either increase or decrease the resistance within the circuit. Due to ohm’s law, this will also affect your current and voltage.
By decreasing the resistance (turning up the volume) you are increasing the voltage and current. This increased voltage will go and power the electromagnetic vibrations within your speaker.
My question is, how does that speaker actually being “louder” happen? Is it just from the speaker operating at a higher or lower frequency? If someone could explain what’s happening within the speaker itself that makes us interpret the sound as louder I’d appreciate it.
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