なんでもナイトコアにする２ - Qiita

import librosa import soundfile as sf import pydub from pydub import AudioSegment path = "motoneta.mp3" path_pitchup = "pitchup.wav" path_nightcore = "nightcore.mp3" # ピッチあげる y, sr = librosa.load(path , mono=True) y_slow = librosa.effects.time_stretch(y, 0.5) sf.write(path_pitchup, y_slow, 44100, format='wav', subtype='PCM_24') # 早くする base_sound = AudioSegment.from_file(path_pitchup, format="wav")