Asked by: GARETH KAY, LOSSIEMOUTH
The most basic sound a loudspeaker can produce is a sine wave. It vibrates the speaker’s diaphragm in and out at a single frequency. But the electrical output from your stereo is made up of multiple sine waves of varying frequencies and amplitudes. When fed to a speaker, the signal is converted into complex vibration patterns to reproduce the sounds the microphone picked up during the original recording.