| 1394 | import numpy as np |
| 1395 | |
| 1396 | def read_wave_file(file_path): |
| 1397 | with wave.open(file_path, 'rb') as wf: |
| 1398 | # 获取音频文件的参数 |
| 1399 | n_channels = wf.getnchannels() |
| 1400 | sample_width = wf.getsampwidth() |
| 1401 | frame_rate = wf.getframerate() |
| 1402 | n_frames = wf.getnframes() |
| 1403 | |
| 1404 | # 读取音频数据 |
| 1405 | audio_data = wf.readframes(n_frames) |
| 1406 | |
| 1407 | # 将音频数据转换为 numpy 数组 |
| 1408 | audio_array = np.frombuffer(audio_data, dtype=np.int16) |
| 1409 | audio_array = audio_array / (2**(8*sample_width-1)) # 归一化到 -1 到 1 之间 |
| 1410 | |
| 1411 | return audio_array, frame_rate |
| 1412 | |
| 1413 | def calculate_dbfs(audio_array): |
| 1414 | # 计算音频信号的均方根（RMS）值 |