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POPython Audio over Network Problems
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copied!<p>Hello I am having problems with audio being sent over the network. On my local system with no distance there is no problems but whenever I test on a remote system there is audio but its not the voice input i want its choppy/laggy etc. I believe its in how I am handling the sending of the audio but I have tried now for 4 days and can not find a solution.</p> <p>I will post all relevant code and try and explain it the best I can</p> <p>these are the constant/global values</p> <pre> #initilaize Speex speex_enc = speex.Encoder() speex_enc.initialize(speex.SPEEX_MODEID_WB) speex_dec = speex.Decoder() speex_dec.initialize(speex.SPEEX_MODEID_WB) #some constant values chunk = 320 FORMAT = pyaudio.paInt16 CHANNELS = 1 RATE = 44100 </pre> <p>I found adjusting the sample rate value would allow for more noise</p> <p>Below is the pyAudio code to initialize the audio device this is also global</p> <pre> #initalize PyAudio p = pyaudio.PyAudio() stream = p.open(format = FORMAT, channels = CHANNELS, rate = RATE, input = True, output = True, frames_per_buffer = chunk) </pre> <p>This next function is the keypress function which writes the data from the mic and sends it using the client function This is where I believe I am having problems. </p> <p>I believe how I am handling this is the problem because if I press and hold to get audio it loops and sends on each iteration. I am not sure what to do here. (Ideas!!!)</p> <pre> def keypress(event): #chunklist = [] #RECORD_SECONDS = 5 if event.keysym == 'Escape': root.destroy() #x = event.char if event.keysym == 'Control_L': #for i in range(0, 44100 / chunk * RECORD_SECONDS): try: #get data from mic data = stream.read(chunk) except IOError as ex: if ex[1] != pyaudio.paInputOverflowed: raise data = '\x00' * chunk encdata = speex_enc.encode(data) #Encode the data. #chunklist.append(encdata) #send audio client(chr(CMD_AUDIO), encrypt_my_audio_message(encdata)) </pre> <p>The server code to handle the audio</p> <pre> ### Server function ### def server(): PORT = 9001 ### Initialize socket server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) server_socket.bind((socket.gethostbyname(socket.gethostname()), PORT)) # socket.gethostbyname(socket.gethostname()) server_socket.listen(5) read_list = [server_socket] ### Start receive loop while True: readable, writable, errored = select.select(read_list, [], []) for s in readable: if s is server_socket: conn, addr = s.accept() read_list.append(conn) print "Connection from ", addr else: msg = conn.recv(2048) if msg: cmd, msg = ord(msg[0]),msg[1:] ## get a text message from GUI if cmd == CMD_MSG: listb1.insert(END, decrypt_my_message(msg).strip() + "\n") listb1.yview(END) ## get an audio message elif cmd == CMD_AUDIO: # make sure length is 16 --- HACK --- if len(msg) % 16 != 0: msg += '\x00' * (16 - len(msg) % 16) #decrypt audio data = decrypt_my_message(msg) decdata = speex_dec.decode(data) #Write the data back out to the speaker stream.write(decdata, chunk) else: s.close() read_list.remove(s) </pre> <p>and for completion the binding of the keyboard in Tkinter</p> <pre> root.bind_all('', keypress) </pre> <p>Any ideas are greatly appreciated how I can make that keypress method work as needed or suggest a better way or maybe I am doing something wrong altogether</p> <p>*cheers</p> <p>Please note I have tested it without the encryption methods also and same thing :-)</p>

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