Threema-Android-mirror/app/src/main/res/drawable/ic_microphone_outline.xml

<!-- drawable/microphone_outline.xml -->
<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:height="24dp"
    android:width="24dp"
    android:viewportWidth="24"
    android:viewportHeight="24">
    <path android:fillColor="#000" android:pathData="M17.3,11C17.3,14 14.76,16.1 12,16.1C9.24,16.1 6.7,14 6.7,11H5C5,14.41 7.72,17.23 11,17.72V21H13V17.72C16.28,17.23 19,14.41 19,11M10.8,4.9C10.8,4.24 11.34,3.7 12,3.7C12.66,3.7 13.2,4.24 13.2,4.9L13.19,11.1C13.19,11.76 12.66,12.3 12,12.3C11.34,12.3 10.8,11.76 10.8,11.1M12,14A3,3 0 0,0 15,11V5A3,3 0 0,0 12,2A3,3 0 0,0 9,5V11A3,3 0 0,0 12,14Z" />
</vector>