Hello, DRC 3.1.0 is out at the usual place: http://drc-fir.sourceforge.net/ Release notes: The Octave scripts have been reworked to make them compatible with the latest version of Octave and improved to provide some autoscaling features and exports to different image formats. The microphone compensation stage has been moved to the beginning of the correction procedure so that any following stage works using the compensated impulse response as a reference. A new parameter adding a configurable delay to the minimum phase version of the correction filter has been introduced. Many other minor bugs have been fixed. Best of listening, -- Denis Sbragion InfoTecna Tel: +39 0362 805396, Fax: +39 0362 805404 URL: http://www.infotecna.it