MATLAB: How we will create, send and receive a voice packet of 20ms of size 100bytes

jitter buffervoice packets

I want to store my voice samples in a multiple voice packets and then want to store them in a buffer. The buffer size is 100ms and 500bytes. the packets will be played after 20ms interval.

Please help and guide.

Best Answer

In MatLab.

If you can do in Simulink, then sure.

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MATLAB: Two different interacting programs on parallel computing toolbox

Hi Gav,

I think you want the labsend, labreceive functionality. You can use the labindex function to switch between server behaviour and client behaviour, for instance if you use spmd with 2 labs, one being the server and one being the client you could do:

spmd
  if labindex == 1
    % Read data from micro-controller
    % ...
    labSend(DMat, 2) % Send data to lab 2
  else
    data = labReceive(1); % Receive data from lab 1
    % Do stuff with the data.
  end
end

I think I should also point out that you're writing quite a bit of Java code in MATLAB, this is not necessarily the best idea. For instance, you're not closing your sockets after you read the data, you only close them in the catch block if there's an error. This is understandable because MATLAB does not have a finally statement (the equivalent functionality is provided by onCleanup).

You can call Java functions from MATLAB. In your situation it might be safer to write the code that reads from the micro-controller in Java and then call that code from MATLAB.

See http://www.mathworks.co.uk/help/matlab/using-java-libraries-in-matlab.html

HTH, Tom

MATLAB: Cannot communicate more than twice between server and client

tcpip() does the equivalent of bind() without SO_REUSEADDR https://stackoverflow.com/questions/14388706/socket-options-so-reuseaddr-and-so-reuseport-how-do-they-differ-do-they-mean-t

If you need multiple simultaneous connections, they will have to be on different ports.

One strategy in common use (by some of the key daemons, but not so much with user programs) is to publish a port for the client to make the connection to (e.g., the 30000), but instead of holding on to that port for the entire conversation, instead the server creates a new listener on another port, and responds to the client telling it what port the listener was created on, and then ends the connection. All of the clients need to talk to the same master port to get told what port the conversation will take place on, but those conversations are short and any refused connection can be retried a short time later to get the system a chance to finish the previous (short) conversation.

Best Answer

Related Solutions

MATLAB: Two different interacting programs on parallel computing toolbox

MATLAB: Cannot communicate more than twice between server and client

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