python - 使用 PyAudio 和 NumPy 同时录制和播放音频

Question

目前我可以录制音频并将其保存为 NumPy 数组。我需要的是在录制音频后我希望能够再次录制但同时播放此 NumPy 数组

import pyaudio
import numpy

CHUNK = 1024
WIDTH = 2
CHANNELS = 2
RATE = 44100
RECORD_SECONDS = 5

p = pyaudio.PyAudio()

stream = p.open(format=p.get_format_from_width(WIDTH),
                channels=CHANNELS,
                rate=RATE,
                input=True,
                output=True,
                frames_per_buffer=CHUNK) 

frames = []

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(numpy.fromstring(data, dtype=numpy.int16))

numpydata = numpy.hstack(frames)

stream.stop_stream()
stream.close()

p.terminate()

Answer 1

您可以使用线程。更多信息请查看官方文档here我不太了解录音和播放音频，所以我刚刚创建了一个适合您的模板。

这是我的例子:

from threading import Thread

def record():
  #Put your recording function here
def play():
  #Put your playing function here

Thread(target = record).start()
Thread(target = play).start()   
#These two start the two functions at the same time. If you want to only run the play
#function after it runs the record function once, you could do something like this:

这是更好的一个:

from threading import Thread

def record():
  #Put your recording function here
def play():
  #Put your playing function here

while recorded!=True
  Thread(target = record)
  recorded=True

Thread(target = record).start()
Thread(target = play).start()

要重复第二个示例中的最后两行，您只需添加一个while 或for 循环即可。请随时在评论中提问。