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- import wave
- import pysilk
- from pydub import AudioSegment
-
-
- def get_pcm_from_wav(wav_path):
- """
- 从 wav 文件中读取 pcm
-
- :param wav_path: wav 文件路径
- :returns: pcm 数据
- """
- wav = wave.open(wav_path, "rb")
- return wav.readframes(wav.getnframes())
-
-
- def mp3_to_wav(mp3_path, wav_path):
- """
- 把mp3格式转成pcm文件
- """
- audio = AudioSegment.from_mp3(mp3_path)
- audio.export(wav_path, format="wav")
-
-
- def pcm_to_silk(pcm_path, silk_path):
- """
- wav 文件转成 silk
- return 声音长度，毫秒
- """
- audio = AudioSegment.from_wav(pcm_path)
- wav_data = audio.raw_data
- silk_data = pysilk.encode(
- wav_data, data_rate=audio.frame_rate, sample_rate=audio.frame_rate)
- with open(silk_path, "wb") as f:
- f.write(silk_data)
- return audio.duration_seconds * 1000
-
-
- def mp3_to_sil(mp3_path, silk_path):
- """
- mp3 文件转成 silk
- return 声音长度，毫秒
- """
- audio = AudioSegment.from_mp3(mp3_path)
- wav_data = audio.raw_data
- silk_data = pysilk.encode(
- wav_data, data_rate=audio.frame_rate, sample_rate=audio.frame_rate)
- # Save the silk file
- with open(silk_path, "wb") as f:
- f.write(silk_data)
- return audio.duration_seconds * 1000
-
-
- def sil_to_wav(silk_path, wav_path, rate: int = 24000):
- """
- silk 文件转 wav
- """
- wav_data = pysilk.decode_file(silk_path, to_wav=True, sample_rate=rate)
- with open(wav_path, "wb") as f:
- f.write(wav_data)
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