def playnotes(namesOrNotes=['C3', 'E3', 'G3', 'C4'],
length=2.0,
delay=0.05,
volume=0.25):
'''
Plays the notes passed in on the digitar (digital-guitar).
Parameters:
namesOrNotes: Represents the notes to be played in one of these -
1 - a string naming a note, like 'C3', 'D#4', or 'Bb2',
2 - a list of strings naming the notes as above,
3 - a Note instance, or
4 - a list of Note instances.
Defaults to ['C3', 'E3', 'G3', 'C4'] - it's a nice sounding chord.
length: If not using Note instance(s), defines how long each note will be held for, in seconds.
Defaults to 2.0 seconds.
delay: If a list of strings is passed in, defines how many seconds to wait before each additional note is started.
Defaults to 0.05 seconds.
volume: If not using Note instance(s), defines how loudly the notes will be played.
Defaults to 0.25.
'''
if isinstance(length, str):
raise Exception(
"If you want to play multiple notes, wrap them in [] like playnotes(['C3', 'E3'])"
)
elif isinstance(length, Note):
raise Exception(
"If you want to play multiple notes, wrap them in [] like playnotes([note1, note2])"
)
if isinstance(namesOrNotes, str):
namesOrNotes = [Note(namesOrNotes, length, delay, volume)]
elif isinstance(namesOrNotes, Note):
namesOrNotes = [namesOrNotes]
elif isinstance(namesOrNotes[0], str):
namesOrNotes = [
Note(name, length, delay * index, volume)
for index, name in enumerate(namesOrNotes)
]
# Render all the notes.
fullLength = 0.0
sampleRate = 44100
for note in namesOrNotes:
fullLength = max(fullLength, note.length + note.delay)
out = source.silence(fullLength +
0.1) # Pad it a bit so I stop getting errors...
#print('fullLength: {} silence samples: {}'.format(fullLength, len(out)))
for note in namesOrNotes:
firstSample = int(note.delay * sampleRate)
#print('delay: {} first sample: {}'.format(note.delay, firstSample))
data = note.render()
#print('delay: {} first sample: {} data size: {}'.format(note.delay, firstSample, len(data)))
out[firstSample:firstSample + len(data)] += data
playback.play(out)
def render(self):
# Return timeline as audio array by rendering the hits
out = source.silence(self.calculate_length())
for time, hits in self.hits.items():
index = int(time * self.rate)
for hit in hits:
data = hit.render()
out[index:index + len(data)] += data
return out
def render(self):
# Return timeline as audio array by rendering the hits
out = source.silence(self.calculate_length())
for time, hits in self.hits.items():
index = int(time * self.rate)
for hit in hits:
data = hit.render()
out[index:index + len(data)] += data
return out