在python中提高组合wav文件的播放速度？

import wave
import numpy as np

# 打开并读取多个wav文件
file1 = wave.open('file1.wav', 'rb')
file2 = wave.open('file2.wav', 'rb')

# 获取音频参数
params = file1.getparams()

# 读取音频数据
data1 = file1.readframes(file1.getnframes())
data2 = file2.readframes(file2.getnframes())

# 将音频数据转换为numpy数组
audio1 = np.frombuffer(data1, dtype=np.int16)
audio2 = np.frombuffer(data2, dtype=np.int16)

# 合并音频数据
combined_audio = np.concatenate((audio1, audio2))

# 创建新的wav文件
combined_file = wave.open('combined.wav', 'wb')

# 设置参数
combined_file.setparams(params)

# 将合并后的音频数据写入新的wav文件
combined_file.writeframes(combined_audio.tobytes())

# 关闭所有打开的wav文件
file1.close()
file2.close()
combined_file.close()