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.
I will post all relevant code and try and explain it the best I can
these are the constant/global values
#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
I found adjusting the sample rate value would allow for more noise
Below is the pyAudio code to initialize the audio device this is also global
#initalize PyAudio
p = pyaudio.PyAudio()
stream = p.open(format = FORMAT,
channels = CHANNELS,
rate = RATE,
input = True,
output = True,
frames_per_buffer = chunk)
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.
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!!!)
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))
The server code to handle the audio
### 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)
and for completion the binding of the keyboard in Tkinter
root.bind_all('', keypress)
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
*cheers
Please note I have tested it without the encryption methods also and same thing :-)
