Idea of Loudspeaker Icon
It's a rectangle with 2 circles in it with another circle like image with it. On the outside of the two circles there are 4 dots in each corner of the rectangle. As you get closer to the circles, they both overlap each other basically right next to each other. In that are forming a bunch of dots all around the circumference of the circle. This is where the inner most circle is where the "music" comes from.
This is the Loudspeaker icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.