An internist, also called a general internist or doctor of internal medicine, is a medical doctor that specializes in the diagnosis and medical (nonsurgical) treatment of adults.
Exhaust resonators, meanwhile, further reduce the noise by making sound waves that cancel noises out. Structure A typical automotive exhaust resonator is made of a hollow steel cylindrical tube and is attached to the muffler of an exhaust system. This type of resonator is designed similar to that of an acoustic resonator, which creates an âexhaust noteâ that gives the exhaust noise a less annoying and more pleasant tone.
Although it may look like a smaller version of a muffler, resonators are designed to be supplemented into an exhaust system to further tune the sound and not replace a muffler completely. A resonator further dampens the sound but more importantly, it is there to alleviate what is known as âexhaust droneâ. Usually during cruising speeds, some exhaust set-ups may exhibit a background buzz that may be heard even inside the passenger compartment.