Hi I want to build a secure voice communication system. For that purpose i have a sketch in my mind that a user would speak in mic attached with computer we access that data using matlab encrypt it using some xyz encryption algorithm and then send that data back to sound card as output. That output will travel through wire and on the reception side it is connected to mic of another computer and that data is decrypted and send to speakers.
Can any body please tell me how to access sound card using Matlab.
THanks for your help