mkdocs-material/material/.icons/material/waveform.svg

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M22 12l-2 1-1 1-1-1-1 3-1-3-1 8-1-8-1 2-1-2-1 4-1-4-1 9-1-9-1 6-1-6-1 1-1-1-2-1 2-1 1-1 1 1 1-6 1 6 1-9 1 9 1-4 1 4 1-2 1 2 1-8 1 8 1-3 1 3 1-1 1 1 2 1z"/></svg>