如何使用numpy数组创建pydub AudioSegment？

Question

我在python中有以下代码

from scipy.io.wavfile import read
rate, signal = read('./data/input.wav')
# get only one channel
signal = signal[:,0] 
# do a bunch of processing here

现在我想使用'signal'和'rate'创建一个pydub段

audio_segment = pydub.AudioSegment()

那么，如何创建该音频片段，之后又如何以numpy数组的形式获取信号呢？

Answer 1

我能够在我的机器上运行以下代码：

from scipy.io.wavfile import read
from pydub import AudioSegment

rate, signal = read("./test/data/test1.wav")
channel1 = signal[:,0]

audio_segment = pydub.AudioSegment(
    channel1.tobytes(), 
    frame_rate=rate,
    sample_width=channel1.dtype.itemsize, 
    channels=1
)

# test that it sounds right (requires ffplay, or pyaudio):
from pydub.playback import play
play(audio_segment)