准备条件，安装ffmpeg
ffmpeg官网
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将下载下来的zip解压，添加环境变量使用AudioSegment进行格式转换为wav使用wave进行单声道转换为双声道使用AudioSegment进行格式转换并提高音量
import wavefrom pydub import AudioSegmentimport osimport numpy as npimport structfrom concurrent.futures import ThreadPoolExecutordef open_file(path):file = open(path, 'rb')file_tuple = os.path.splitext(os.path.basename(file.name))file.close()song = AudioSegment.from_mp3(path)song.export("E:/music/temp/%s%s" % (file_tuple[0], '.wav'), format="wav")wf = wave.open("E:/music/temp/%s%s" % (file_tuple[0], '.wav'), 'rb')frames = wf.getnframes()framerate = wf.getframerate()str_data = wf.readframes(frames)sample_width = wf.getsampwidth()wf.close()wave_data = np.fromstring(str_data, dtype=np.short)wave_data.shape = (-1, 2)wave_data = wave_data.Tmono_wave = (wave_data[0]+wave_data[1])/2wf_mono = wave.open("E:/music/temp/%s%s" % (file_tuple[0], '.wav'), 'wb')wf_mono.setnchannels(1)wf_mono.setframerate(framerate)wf_mono.setsampwidth(sample_width)for i in mono_wave:data = struct.pack('<h', int(i))wf_mono.writeframesraw(data)wf_mono.close()new_song = AudioSegment.from_wav("E:/music/temp/%s%s" % (file_tuple[0], '.wav'))new_song = new_song + 20new_song.export("E:/music/dst/%s%s" % (file_tuple[0], '.mp3'), format="mp3")if __name__ == '__main__':with ThreadPoolExecutor(10) as executor:for root, dirs, files in os.walk("E:\music\src"):for name in files:executor.submit(open_file, os.path.join(root, name))
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