How does a muffler work?
The key to knowing how mufflers work is to know and understand the concept of canceling sound first. To cancel out sound is to make a wave of sound that is precisely the opposite of some other wave. This would mean that if the engine produces a certain sound wave, the muffler would produce the exact opposite of this sound wave consequently making the two waves out of phase. If the waves are out of phase, zero amplitude is produced called destructive interference. So if the sound wave produced by the car engine is at the maximum, the muffler will be producing the same wave at the minimum. When the two waves hit your eardrum, you hear nothing because the waves when added add up to nothing. In order to cancel out sound, a tube set is found inside a muffler. These tubes are made to produce waves that reflect and get in the way with each other. This is how it happens. The sound waves get inside the tube at the center into the muffler’s body and then go into another chamber called the “reson
