class DetuningExercise:
def __init__(self, sampling_frequency: int):
# exercise settings
self._sampling_frequency = sampling_frequency
self._volume = None
self._play_type = None
self._scale = None
self._max_detuning = None
self._lowest_pitch = None
self._highest_pitch = None
self._smallest_interval = None
self._largest_interval = None
self._synthesizer = Synthesizer(sampling_frequency)
self._possible_error = None
self._chord_size = None
self._voice_length = None
# other variables
self._actual_example = None
self._player = Player(sampling_frequency)
def set_sampling_frequency(self, sampling_frequency: int):
self._sampling_frequency = sampling_frequency
self._synthesizer.set_sampling_frequency(sampling_frequency)
self._player.set_sampling_frequency(sampling_frequency)
def set_volume(self, volume: float):
self._volume = volume
self._synthesizer.set_volume(volume)
def set_play_type(self, play_type: str):
self._play_type = play_type
def set_scale(self, scale: Scale):
self._scale = scale
def set_max_detuning(self, max_detuning: float):
self._max_detuning = max_detuning
def set_lowest_pitch(self, lowest_pitch: Pitch):
self._lowest_pitch = lowest_pitch
def set_highest_pitch(self, highest_pitch: Pitch):
self._highest_pitch = highest_pitch
def set_smallest_interval(self, smallest_interval: Interval):
self._smallest_interval = smallest_interval
def set_largest_interval(self, largest_interval: Interval):
self._largest_interval = largest_interval
def set_synthesizer(self, synthesizer: type):
self._synthesizer = Synthesizer(self._sampling_frequency, synthesizer)
def get_possible_error(self) -> float:
return self._possible_error
def set_possible_error(self, possible_error: float):
self._possible_error = possible_error
def get_chord_size(self) -> int:
return self._chord_size
def set_chord_size(self, chord_size: int):
self._chord_size = chord_size
def get_voice_length(self) -> int:
return self._voice_length
def set_voice_length(self, voice_length: int):
self._voice_length = voice_length
def generate_new_example(self):
# Choose detuning
actual_detuning = random.uniform(
0, min(self._max_detuning, 1200 / 2 / len(self._scale._pitches)))
# Generate melody
chord_generator = ChordGenerator(
scale=self._scale,
lowest_pitch=self._lowest_pitch,
highest_pitch=self._highest_pitch,
possible_detune=0,
smallest_interval=self._smallest_interval,
largest_interval=self._largest_interval,
chord_size=self._chord_size)
tuned_chords = list()
for i in range(self._voice_length):
tuned_chords.append(chord_generator.generate_chord())
# Create even detuning
number_of_sounds = len(tuned_chords) * tuned_chords[0].get_size()
if number_of_sounds < 2:
raise ValueError(
'[DetuningExercise::generate_new_example()] '\
+ 'Cannot properly apply detuning to less than 2 sounds!'
)
number_of_lowered_sounds = int(np.ceil(number_of_sounds / 3))
lowered_or_unchanged_indices = np.random.choice(
np.arange(number_of_sounds),
2 * number_of_lowered_sounds,
replace=False)
lowered_indices = lowered_or_unchanged_indices[:
number_of_lowered_sounds]
unchanged_indices = lowered_or_unchanged_indices[
number_of_lowered_sounds:]
highened_indices = np.setdiff1d(np.setdiff1d(
np.arange(number_of_sounds), lowered_indices, assume_unique=True),
unchanged_indices,
assume_unique=True)
# Detune chords
for i in range(len(tuned_chords)):
for j in range(tuned_chords[i].get_size()):
if i * tuned_chords[i].get_size() + j in lowered_indices:
tuned_chords[i]._pitches[j] = tuned_chords[i]._pitches[
j].copy(detune=-actual_detuning)
elif i * tuned_chords[i].get_size() + j in highened_indices:
tuned_chords[i]._pitches[j] = tuned_chords[i]._pitches[
j].copy(detune=actual_detuning)
# Add chords to example
self._actual_example = DetuningExample(actual_detuning)
for i in range(len(tuned_chords)):
self._actual_example.add_chord(tuned_chords[i])
def play_example(self):
# Check exercise state
if self._actual_example is None:
raise RuntimeError(
'[VoicesExercise::play_example()] No example to play!')
if self._play_type is None:
raise RuntimeError(
'[VoicesExercise::play_example()] No play type chosen!')
# Play
signal = np.zeros(0)
if self._play_type == 'Upwards':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_up(
self._actual_example.chords)
]))
elif self._play_type == 'Downwards':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_down(
self._actual_example.chords)
]))
elif self._play_type == 'Upwards with hold':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_up_hold(
self._actual_example.chords)
]))
elif self._play_type == 'Downwards with hold':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_down_hold(
self._actual_example.chords)
]))
elif self._play_type == 'Together':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_together(
self._actual_example.chords)
]))
else:
raise RuntimeError(
'[VoicesExercise::play_example()] Unknown play type!')
def answer_example(self, answer: float) -> (bool, float):
if self._actual_example.detuning\
+ self._possible_error\
>= answer\
>= self._actual_example.detuning\
- self._possible_error:
return True, self._actual_example.detuning
else:
return False, self._actual_example.detuning
class VoicesExercise:
def __init__(self, sampling_frequency: int):
# exercise settings
self._sampling_frequency = sampling_frequency
self._volume = None
self._play_type = None
self._scale = None
self._lowest_pitch = None
self._highest_pitch = None
self._smallest_interval = None
self._largest_interval = None
self._possible_detune = None
self._synthesizer = Synthesizer(sampling_frequency)
self._possible_error = None
self._chord_size = None
self._voice_length = None
self._if_first_note_provided = None
# other variables
self._actual_example = None
self._player = Player(sampling_frequency)
def set_sampling_frequency(self, sampling_frequency: int):
self._sampling_frequency = sampling_frequency
self._synthesizer.set_sampling_frequency(sampling_frequency)
self._player.set_sampling_frequency(sampling_frequency)
def set_volume(self, volume: float):
self._volume = volume
self._synthesizer.set_volume(volume)
def set_play_type(self, play_type: str):
self._play_type = play_type
def set_scale(self, scale: Scale):
self._scale = scale
def set_lowest_pitch(self, lowest_pitch: Pitch):
self._lowest_pitch = lowest_pitch
def set_highest_pitch(self, highest_pitch: Pitch):
self._highest_pitch = highest_pitch
def set_smallest_interval(self, smallest_interval: Interval):
self._smallest_interval = smallest_interval
def set_largest_interval(self, largest_interval: Interval):
self._largest_interval = largest_interval
def set_possible_detune(self, possible_detune: float):
self._possible_detune = possible_detune
def set_synthesizer(self, synthesizer: type):
self._synthesizer = Synthesizer(self._sampling_frequency, synthesizer)
def get_possible_error(self) -> float:
return self._possible_error
def set_possible_error(self, possible_error: float):
self._possible_error = possible_error
def get_chord_size(self) -> int:
return self._chord_size
def set_chord_size(self, chord_size: int):
self._chord_size = chord_size
def get_voice_length(self) -> int:
return self._voice_length
def set_voice_length(self, voice_length: int):
self._voice_length = voice_length
def set_if_first_note_provided(self, if_first_note_provided: bool):
self._if_first_note_provided = if_first_note_provided
def generate_new_example(self):
chord_generator = ChordGenerator(
scale=self._scale,
lowest_pitch=self._lowest_pitch,
highest_pitch=self._highest_pitch,
possible_detune=self._possible_detune,
smallest_interval=self._smallest_interval,
largest_interval=self._largest_interval,
chord_size=self._chord_size)
self._actual_example = VoicesExample()
for i in range(self._voice_length):
self._actual_example.add_chord(chord_generator.generate_chord())
def get_first_note(self):
if self._if_first_note_provided:
return self._actual_example.get_pitch(0, 0)
def play_example(self):
# Check exercise state
if self._actual_example is None:
raise RuntimeError(
'[VoicesExercise::play_example()] No example to play!')
if self._play_type is None:
raise RuntimeError(
'[VoicesExercise::play_example()] No play type chosen!')
# Play
signal = np.zeros(0)
if self._play_type == 'Upwards':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_up(
self._actual_example.chords)
]))
elif self._play_type == 'Downwards':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_down(
self._actual_example.chords)
]))
elif self._play_type == 'Upwards with hold':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_up_hold(
self._actual_example.chords)
]))
elif self._play_type == 'Downwards with hold':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_down_hold(
self._actual_example.chords)
]))
elif self._play_type == 'Together':
self._player.play(
np.concatenate([
signal,
self._synthesizer.generate_chords_together(
self._actual_example.chords)
]))
else:
raise RuntimeError(
'[VoicesExercise::play_example()] Unknown play type!')
def answer_example(self, user_answers: list) -> VoicesAnswer:
# Prepare correct answers matrix
correct_answers = list()
for chord_id in range(self._actual_example.get_voice_length()):
correct_answers.append(list())
for voice_id in range(self._actual_example.get_chord_size()):
correct_answers[-1].append(False)
# Add first note to user answers
if self._if_first_note_provided:
user_answers[0].append(self.get_first_note().get_cents_from_a())
# Set hit answers to true
for chord_id in range(self._actual_example.get_voice_length()):
for voice_id in range(self._actual_example.get_chord_size()):
for user_answer in user_answers[chord_id]:
if self._actual_example.get_pitch(
chord_id,
voice_id
).get_cents_from_a() + self._possible_error\
>= user_answer\
>= self._actual_example.get_pitch(
chord_id,
voice_id
).get_cents_from_a() - self._possible_error:
correct_answers[chord_id][voice_id] = True
break
# Return answer object
return VoicesAnswer(self._actual_example, correct_answers)