adding simple dual quantizer

dual_quantizer.lua

@@ -0,0 +1,31 @@
+--- simple dual quantizer
+-- oootini 27082020
+-- negative input values are inverted. use LFOs to paint melodies
+-- in1, in2: voltage to quantize
+-- quantized notes on outs 1 and 3, with a trigger on outs 2 and 4 for every new note
+
+function init()
+	-- quantize based on a harmonic minor scale
+	input[1].mode( 'scale', {0,2,3,5,7,8,10,12} )
+	-- quantize based on a major triad scale
+	input[2].mode( 'scale', {0,4,7,12} )
+	print('dual quantizer loaded')
+end
+
+input[1].scale = function( note )
+	-- invert negative voltages, eg negative phase of LFO
+	if note.volts < 0 then
+		note.volts = note.volts * -1
+	end
+	output[1].volts = note.volts
+	-- trigger when the input moves to a new note
+	output[2](pulse(0.01,8))
+end
+
+input[2].scale = function( note )
+	if note.volts < 0 then
+		note.volts = note.volts * -1
+	end
+	output[3].volts = note.volts
+	output[4](pulse(0.01,8))
+end