| Ever heard of cars without mufflers? Well, get ready | | | | making the two waves out of phase. If the waves |
| to cover your ears. Mufflers may look like some tube | | | | are out of phase, zero amplitude is produced called |
| somewhere in the engine but you'd be amazed at | | | | destructive interference. |
| what it can do with regards to a vehicle's noise level. | | | | So if the sound wave produced by the car engine is |
| Here are some top facts you need to know about | | | | at the maximum, the muffler will be producing the |
| them. | | | | same wave at the minimum. When the two waves |
| What is a muffler? | | | | hit your eardrum, you hear nothing because the |
| A muffler is a tubular acoustic device that is inserted | | | | waves when added add up to nothing. In order to |
| in the exhaust system. It is designed to reduce noise. | | | | cancel out sound, a tube set is found inside a muffler. |
| Inside it, you will find a tube set with holes on them. | | | | These tubes are made to produce waves that |
| They work in the same manner like a musical | | | | reflect and get in the way with each other. |
| instrument by reflecting waves that transmit sound | | | | This is how it happens. The sound waves get inside |
| caused by the vehicle engine. In this way, some of | | | | the tube at the center into the muffler's body and |
| the waves are cancelled out. | | | | then go into another chamber called the "resonator". |
| How does a muffler work? | | | | The resonator, equipped with a specific length and |
| The key to knowing how mufflers work is to know | | | | some air, is the chamber that's responsible in creating |
| and understand the concept of canceling sound first. | | | | a wave that wipes out a definite sound frequency. It |
| To cancel out sound is to make a wave of sound | | | | is here that sound waves are canceled out. After |
| that is precisely the opposite of some other wave. | | | | going into the resonator, the sound waves take a |
| This would mean that if the engine produces a | | | | turn and leave through the last pipe, leaving the |
| certain sound wave, the muffler would produce the | | | | muffler. |
| exact opposite of this sound wave consequently | | | | What are the other kinds of mufflers? |