This Brak dźwięku icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
This is a picture of a no audio icon. This logo has three backwards c to denotes that sound is coming from it but the line on the backward c means that no sound is coming from it. Then you have a picture of rectangle with a bottom part of the wire hanger attached.