How to Send Image file using audio?

[adyprado]

Hi, i am trying to send a image throug a sound , from one pc to another pc...

any ideas that could help me to do that?.. i am new with labview and this is for a proyect in the university...

thanks for the help 🙂

[crossrulz]

First of all, you need to come up with some modulation scheme.  You could probably just send 0 and 1 volt for each bit at a given rate, but that could be hard since you have to synchronize your clock somehow.  You might want to look into Pulse Coded Modulation.  Once you figure out your modulation scheme, then you can start talking LabVIEW code.

[ogk.nz]

Depending on the modulation scheme and depending how quickly you wanted to transmit images I would have suggested using audible or sub-audible frequencies with each frequency working as a specific byte value, that of course depends on how accurate both your speaker and microphone are.

But to begin with I would search these forums on tutorials for listening to sounds, generating sounds, reading image data, and rebuilding an image from data.

[ejkaiser]

Radio amateurs have been doing this since decades. Many formats have been developped, typically using a spectral bandwidth of 2 - 10 kHz. So the signal fits into a HF SSB or VHF FM channel. There is a lot of software available much of it is free.

Google for SSTV = Slow Scan Television

Cheers

Edgar

[adyprado]

Thank you very much to all for the answers, i will check on that ...