On 24.06.2015 12:41, Petter Reinholdtsen wrote: > [Peter Belkner] >> You may use SoX to generate test files. > Thank you. I'll try to figure out how to use sox for this. http://notes.tomcarlson.com/sox http://montessorimuddle.org/2012/04/19/generating-and-saving-tones-with-sox/