I believe there is a beta node that might let you do that, node-red-contrib-sox-utils uyou won't find it in the Flow yet, so follow the link to get to the announcement and directions for installing it.
I believe there is a beta node that might let you do that, node-red-contrib-sox-utils uyou won't find it in the Flow yet, so follow the link to get to the announcement and directions for installing it.