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| import numpy as np | |
| NOTE_FREQUENCIES = { | |
| 'C4': 261.63, # Middle C | |
| 'D4': 293.66, | |
| 'E4': 329.63, | |
| 'F4': 349.23, | |
| 'G4': 392.00, | |
| 'A4': 440.00, | |
| 'B4': 493.88, | |
| 'C5': 523.25 | |
| } | |
| # from pydub import AudioSegment | |
| # import simpleaudio as sa | |
| def generate_sine_wave(frequency, duration, sample_rate=44100, amplitude=0.5): | |
| """ | |
| Generate a sine wave for a given frequency, duration, and sample rate. | |
| """ | |
| t = np.linspace(0, duration, int(sample_rate * duration), endpoint=False) | |
| wave = amplitude * np.sin(2 * np.pi * frequency * t) | |
| return wave | |
| def apply_decay(wave, decay_factor=0.0001): | |
| """ | |
| Apply an exponential decay to the waveform to simulate the damping effect. | |
| """ | |
| decay = np.exp(-decay_factor * np.arange(len(wave))) | |
| return wave * decay | |
| def create_xylophone_note(frequency, duration=0.5, sample_rate=44100): | |
| """ | |
| Create a synthesized xylophone note using sine waves and damping. | |
| """ | |
| # Generate the fundamental frequency | |
| wave = generate_sine_wave(frequency, duration, sample_rate) | |
| # Add overtones (harmonics) to mimic the xylophone's metallic timbre | |
| overtone1 = generate_sine_wave( | |
| frequency * 2.5, duration, sample_rate, amplitude=0.3) | |
| overtone2 = generate_sine_wave( | |
| frequency * 4.0, duration, sample_rate, amplitude=0.2) | |
| # Combine the fundamental frequency and overtones | |
| combined_wave = wave + overtone1 + overtone2 | |
| # Apply decay to simulate the note fading out | |
| combined_wave = apply_decay(combined_wave) | |
| # Normalize to 16-bit range and convert to audio segment | |
| # audio_data = (combined_wave * 32767).astype(np.int16) | |
| audio_data = combined_wave | |
| return audio_data | |
| # audio_segment = AudioSegment(audio_data.tobytes( | |
| # ), frame_rate=sample_rate, sample_width=2, channels=1) | |
| # return audio_segment | |
| # def play_note(note): | |
| # """ | |
| # Play a given AudioSegment note using simpleaudio. | |
| # """ | |
| # play_obj = sa.play_buffer( | |
| # note.raw_data, num_channels=1, bytes_per_sample=2, sample_rate=note.frame_rate) | |
| # play_obj.wait_done() | |
| def get_note(note: str) -> np.ndarray: | |
| # Example usage to create and play a sequence of xylophone notes | |
| return create_xylophone_note(NOTE_FREQUENCIES.get(note, 'C4')) | |
| # Generate and play each note | |
| # for note_name, frequency in note_frequencies.items(): | |
| # print(f"Playing {note_name}") | |
| # note = create_xylophone_note(frequency) | |
| # play_note(note) | |