Started code for Noel2013

Noel2013/noel.py

+#!/usr/bin/env python3
+
+# ============================================================================
+# This script allows you to play music using a chorizo (or whatever food you
+# like) keyboard ! See README for more info and links.
+
+# Specially designed for our demo for Christmas 2013. Designed to fully handle
+# 5 notes and play jingle bells.
+
+# As all the other scripts in this repository, I release it under a very
+# permissive license. To make a long story short : do whatever you want with
+# this script (but try to have fun :), I don't mind. It would be cool to quote
+# the origin of the script if you reuse it, but you don't have to. I'd like to
+# be noticed of what you did cool with it (if you think it's worth). :)
+# Ah, I almost forgot : If by chance we ever meet and you think this script is
+# worth, you can buy me a soda :)
+#
+#                                                                   Phyks
+# =============================================================================
+
+from sound4python import sound
+from multiprocessing import Process
+import math
+
+
+class _Getch:
+    """Gets a single character from standard input.  Does not echo to the
+screen."""
+    def __call__(self):
+        import sys
+        import tty
+        import termios
+        fd = sys.stdin.fileno()
+        old_settings = termios.tcgetattr(fd)
+        try:
+            tty.setraw(sys.stdin.fileno())
+            ch = sys.stdin.read(1)
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        return ch
+
+getch = _Getch()
+
+
+def play_wave(frequency=440, nb_secs=1.):
+    sine_wave = []
+    for i in range(math.ceil(nb_secs*framerate)+1):
+        sine_wave.append(int(16384*math.sin(2*math.pi*frequency*i/framerate)))
+
+    sound(sine_wave)
+
+framerate = 16000
+processes = []
+frequency = 440
+
+
+# Handle serial opening
+# *** TODO ***
+
+
+# Handle calibration
+# *** TODO ***
+
+# Main loop
+# *** TODO *** : Add fetch from the serial also
+print("Running... Press q to quit.")
+running = True
+while running:
+    char = getch()
+    if char == "q":
+        print("Exiting...")
+        running = False
+        continue
+    elif char == "a":
+        frequency = 440
+    elif char == "b":
+        frequency = 493.88
+    elif char == "c":
+        frequency = 523.25
+    elif char == "d":
+        frequency = 587.33
+    elif char == "e":
+        frequency = 659.26
+    elif char == "f":
+        frequency = 698.46
+    elif char == "g":
+        frequency = 783.99
+    else:
+        continue
+
+    print("Playing "+char.upper())
+    processes.append(Process(target=play_wave,
+                     args=(frequency,
+                           math.floor(0.2 * frequency + 1) / frequency)))
+    processes[-1].start()
+
+for i in processes:
+    i.join()

README.md

@@ -35,6 +35,17 @@ __(working on)__
 
 A script to play music using chorizo pads as a musical keyboard. See [our website](http://hackens.org/Projets/TouchlessTracking) (french, but vids are available, more coming soon) for infos and demos.
 
+Launch `test_player.py` and use your keyboard to play music for now (A, B, C, D, E, F and G keys).
+
+# Noel2013
+
+
+__(working on)__
+
+Our code for a demo at Christmas party 2013. We wanted to play Jingle Bells using a chorizo player, 5 notes to fetch from the array and map to real sound.
+
+Use the same basis as `test_player.py` so it is also usable with a keyboard for fallback if whatever bad happen :)
+
 ### 3d view
 
 __(working on)__