description added

README.md

@@ -1 +1,14 @@
-# Vibrato-effect
+Vibrato audio effect. 
+(Vibrato is a musical effect consisting of a regular, pulsating change of pitch. It is used to add expression to vocal and instrumental music)
+
+Using:
+
+#include "BerVibrato/BerVibrato.h"
+//...
+BerVibrato vbr;
+vbr.initialize(SampleRateHz);
+//...
+vbr.setDepth(depth); // depth (amount) from (0; 1]
+vbr.setFrequency(freq); // Vibrato rate in Hz
+//...
+vbr.processOneSample(sample);