def METHOD_NAME(self, audio):
    audio_len = audio.shape[0]
    rir_file = random.choice(self.rir_files)
    rir = self.ap.load_wav(rir_file, sr=self.ap.sample_rate)
    rir = rir / np.sqrt(np.sum(rir**2))
    return signal.convolve(audio, rir, mode=self.rir_config["conv_mode"])[:audio_len]