Headphones Sound Wave 32 Filled icon

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="24" height="24"><path fill="currentColor" d="M15.5 4C9.149 4 4 9.149 4 15.5V18h4a1 1 0 0 1 1 1v10a1 1 0 0 1-1 1H6.5A4.5 4.5 0 0 1 2 25.5v-10C2 8.044 8.044 2 15.5 2S29 8.044 29 15.5v10a4.5 4.5 0 0 1-4.5 4.5H23a1 1 0 0 1-1-1V19a1 1 0 0 1 1-1h4v-2.5C27 9.149 21.851 4 15.5 4Zm1 13a1 1 0 1 0-2 0v13a1 1 0 1 0 2 0V17ZM12 20a1 1 0 0 1 1 1v5a1 1 0 1 1-2 0v-5a1 1 0 0 1 1-1Zm8 1a1 1 0 1 0-2 0v5a1 1 0 1 0 2 0v-5Z"/></svg>