1 files changed, 2 insertions, 2 deletions

diff --git a/src/mxml2csv.go b/src/mxml2csv.go
index 21dcbb4..9b97f53 100644
--- a/src/mxml2csv.go
+++ b/src/mxml2csv.go
@@ -82,7 +82,7 @@ func calcFrequency(pitch Pitch) float64 {
         if pitch.Step == "" {
                 return 0
         }
-        return REFERENCE_PITCH * float64(pitch.Octave-3) * math.Pow(2, float64(pitchOffset[pitch.Step]+pitch.Alter)/12)
+        return math.Abs(REFERENCE_PITCH * float64(pitch.Octave-3) * math.Pow(2, float64(pitchOffset[pitch.Step]+pitch.Alter)/12))
 }
 
 /***** Division calculation *****/
@@ -122,7 +122,7 @@ func calcDuration(noteDuration int, divisions int, tempo float64) float64 {
 func main() {
 
         if *versionFlag {
-                fmt.Println("Version:", APP_VERSION)
+                fmt.Println("MusicXML to CSV converter\n2014 Pacien TRAN-GIRARD\nVersion:", APP_VERSION)
                 return
         }