This is a No Audio Filled icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,000 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.