| import librosa | |
| import numpy as np | |
| import matplotlib.pyplot as plt | |
| def extract_melody(audio_file): | |
| # 加载音频文件 | |
| y, sr = librosa.load(audio_file) | |
| # 提取旋律（和声成分） | |
| y_harmonic, y_percussive = librosa.effects.harmonic(y) | |
| # 计算音高特征（Chroma) | |
| chroma = librosa.feature.chroma_cqt(y=y_harmonic, sr=sr) | |
| # 显示音高特征 | |
| plt.figure(figsize=(10, 4)) | |
| librosa.display.specshow(chroma, y_axis='chroma', x_axis='time') | |
| plt.colorbar() | |
| plt.title('Chromagram') | |
| plt.tight_layout() | |
| plt.show() | |
| # 替换为你的音频文件路径 | |
| audio_file = 'your_song.mp3' | |
| extract_melody(audio_file) |