I'm trying to output frequencies from audio in to a text file. To do this, I'm planning on having a metro block that triggers the write to a text file.
The problem is that the audio frequency needs to be put into a message as a dollar sign variable, but there seems to be no way to do this that doesn't constantly trigger the message.
Does anyone know how to send such a message only when a bang is received?
The file that I currently have is attached.
