How to pronounce “restant” in English

that I saw you move from one place to another on the oin what is that that was a mute M it's um uh it's it's a littlething that you put on the the bridge that the strings restant is really responsible for transmitting a lot of the sound from the strings to theinstrument and so if you just mute it the slightest bit with just a little piece of plastic the sound diminishes greatly and it gives a more somber it it