Pyaudio:如何压缩音频流 [英] Pyaudio : how to compress audio stream

问题描述

我目前正在使用python作为客户端服务器来开发VOIP工具，如下所示:

I'm currently developping a VOIP tool in python working as a client-server as follows :

CHUNK = 1024
p = pyaudio.PyAudio()
stream = p.open(format = pyaudio.paInt16,
        channels = 1,
        rate = 44100,
        input = True,
        frames_per_buffer = CHUNK)

while 1:
    connection.sendVoice(stream.read(CHUNK))

我该如何继续将发送的数据压缩为备用连接，也许可以提高速度，...

How could I proceed to compress the sent data to spare connection, maybe increase speed, ...

推荐答案

import time, sys,io
import pymedia.audio.sound as sound
import pymedia.audio.acodec as acodec
import pymedia.muxer as muxer


def voiceRecorder( secs, name ):
  f = open(name,'wb')
  secs = secs*5
  dm= muxer.Demuxer('mp3')
  snds= sound.getODevices()
  rt = 44100
  cparams= { 'id': acodec.getCodecID( 'mp3' ),
             'bitrate': 128000/4,
             'sample_rate': rt,
             'channels': 2 } 
  ac= acodec.Encoder( cparams )
  snd= sound.Input( rt, 2, sound.AFMT_S16_LE )
  snd.start()
  start_time = time.time()

  while snd.getPosition()<= secs:

   s= snd.getData()
   if s and len( s ):

     for fr in ac.encode( s ):
       f.write( fr)

    else:
      time.sleep(.25)



  snd.stop()


if __name__ == "__main__":
  if len( sys.argv )!= 3:
    print 'Usage: voice_recorder <seconds> <file_name>'
  else:
    voiceRecorder( int( sys.argv[ 1 ] ), sys.argv[ 2 ]  )

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