def __init__(self, nKeys, volume):
#Set the ouput device to speakers implemented elsewhere
self.outputDevice = Speakers()
self.volume = volume
super(ComputerKeyboard, self).__init__(nKeys)
class MusicalKeyboard(Keyboard):
def __init__(self, nKeys, volume):
#Set the ouput device to speakers implemented elsewhere
self.outputDevice = Speakers()
self.volume = volume
super(ComputerKeyboard, self).__init__(nKeys)
def setupKeys(self):
lowest = 27.5 #Hz
step = 1.06 #Relative increase in Hz (neighbouring keys)
self.keys = [lowest + i*step for i in range(self.nKeys)]
def pressKey(self, key):
#Returns a harmonic wave with frequency and amplitude
#extracted from the pressed key and the volume level.
outout = ...
self.outputDevice.play(key, output)