Turning in my ToolBox

blues_solo.py

@@ -13,24 +13,43 @@ def add_note(out, instr, key_num, duration, bpm, volume):
         duration: the duration of the note in beats
         bpm: the tempo of the music
         volume: the volume of the note
-	"""
+    """
     freq = (2.0**(1/12.0))**(key_num-49)*440.0
     stream = instr.play(duration*(60.0/bpm),freq)
     stream *= volume
     out << stream
 
+def note_num(curr_note):
+    if curr_note >= 0:
+        if curr_note <= range(len(blues_scale)):
+            return curr_note
+        else:
+            curr_note = curr_note - 1
+            return curr_note
+    elif curr_note < 0:
+        curr_note = curr_note + 1
+        return curr_note
+
 # this controls the sample rate for the sound file you will generate
 sampling_rate = 44100.0
 Wavefile.setDefaults(sampling_rate, 16)
 
-bass = GuitarBass(sampling_rate)	# use a guitar bass as the instrument
+bass = GuitarBass(sampling_rate)    # use a guitar bass as the instrument
 solo = AudioStream(sampling_rate, 1)
 
 """ these are the piano key numbers for a 3 octave blues scale in A
-	See: http://en.wikipedia.org/wiki/Blues_scale """
+    See: http://en.wikipedia.org/wiki/Blues_scale """
 blues_scale = [25, 28, 30, 31, 32, 35, 37, 40, 42, 43, 44, 47, 49, 52, 54, 55, 56, 59, 61]
-beats_per_minute = 45				# Let's make a slow blues solo
-
-add_note(solo, bass, blues_scale[0], 1.0, beats_per_minute, 1.0)
+beats_per_minute = 45                # Let's make a slow blues solo
+
+curr_note = 0
+add_note(solo, bass, blues_scale[curr_note], 1.0, beats_per_minute, 1.0)
+licks = [ [ [1, 0.5], [1, 0.5], [1, 0.5], [1, 0.5] ], [ [-1, 0.5], [-1, 0.5], [-1, 0.5], [-1, 0.5] ], [ [1, 0.5*1.1], [1, 0.5*0.9], [1, 0.5*1.1], [1, 0.5*0.9] ] ]
+for i in range(4):
+    lick = choice(licks)
+    for note in lick:
+        curr_note += note[0]
+        curr_note = note_num(curr_note)
+        add_note(solo, bass, blues_scale[curr_note], note[1], beats_per_minute, 1.0)
 
 solo >> "blues_solo.wav"