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
See suggested for answers on analog devices. I just wanted to add that some devices save space and material by digitizing the input from a knob or wheel and converting the command to the audio section of a device.
On a digital wheel that you can keep spinning even when the volume is at 0 or 100, the input process is a two step assignment loop input, with short polling. Placing a finger on the wheel sets the start value (step 1). Then the direction the finger moves sets the positive or negative value (step 2). That value is sent to the audio “tap”, telling it to open or close a bit more. The value resets back to zero value of step 1, waiting for another directional input. It repeats that for as long as you’re tracing that finger along the track wheel.
Latest Answers