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# -*- coding: utf-8 -*-
 
import pyaudio
import time
import threading
import wave
 
class Recorder():
  def __init__(self, chunk=1024, channels=1, rate=64000):
    self.CHUNK = chunk
    self.FORMAT = pyaudio.paInt16
    self.CHANNELS = channels
    self.RATE = rate
    self._running = True
    self._frames = []
  def start(self):
    threading._start_new_thread(self.__recording, ())
  def __recording(self):
    self._running = True
    self._frames = []
    p = pyaudio.PyAudio()
    stream = p.open(format=self.FORMAT,
            channels=self.CHANNELS,
            rate=self.RATE,
            input=True,
            frames_per_buffer=self.CHUNK)
    while(self._running):
      data = stream.read(self.CHUNK)
      self._frames.append(data)
 
    stream.stop_stream()
    stream.close()
    p.terminate()
 
  def stop(self):
    self._running = False
 
  def save(self, filename):
    
    p = pyaudio.PyAudio()
    if not filename.endswith(".wav"):
      filename = filename + ".wav"
    wf = wave.open(filename, 'wb')
    wf.setnchannels(self.CHANNELS)
    wf.setsampwidth(p.get_sample_size(self.FORMAT))
    wf.setframerate(self.RATE)
    wf.writeframes(b''.join(self._frames))
    wf.close()
    print("Saved")
 
if __name__ == "__main__":
  
  for i in range(1,4):
    a = int(input('请输入相应数字开始:'))
    if a == 1:      
      rec = Recorder()
      begin = time.time()
      print("Start recording")
      rec.start()
      b = int(input('请输入相应数字停止:'))
      if b == 2:
        print("Stop recording")
        rec.stop()
        fina = time.time()
        t = fina - begin
        print('录音时间为%ds'%t)
        rec.save("1_%d.wav"%i)

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