Idea of Audio Book Icon
This is a picture of a book. on the bottom you can see the width of it and it's pages. on the cover of the book is the icon for a speaker, or sound, showing that audio is playing.
This Audio Book 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 6,100 icons, all in the same style and quality.