file-transfer-over-soundcard

Warren Young wyml@etr-usa.com
Wed May 27 19:31:00 GMT 2015


On May 22, 2015, at 1:18 AM, Spet <spora@email.it> wrote:
> 
>> On May 21, 2015, at 1:03 AM, Spet <spora@email.it> wrote:
>>> 
>>> When i execute from dos console:
>> 
>> Why aren’t you using Cygwin Terminal instead?
> This is my first time.
> However I have to use it in windows console.

Again, *why*?  If you can compile these programs in the Cygwin Terminal, you can run them there, too.

>> You’re trying to send *Cygwin’s* /etc/fstab to another box?
> *Cygwin’s* ???
> another box???

The asterisks (*) are a form of emphasis, created in the days before you could send italics and bold text formatting over email.

“Box” is a slang term for computer.

>>> generate.exe -b 25 -r 48000 -o "k:\TEMP\a.txt" c:\cygwin\etc\fstab
>> 
>> Are you sure you built it with the Cygwin C compiler, and not something else, like the MinGW or Visual Studio compilers?  That’s the only explanation I can think of for why the POSIX path (/etc/fstab) would fail, but a DOS path would succeed.
> I've only done "makefile" in terminal.

That explains nothing.  You can build programs with “make” using any compiler.  It is not Cygwin-specific.

> But the transmission of the file fails because I get a bit sequence completely different from the original.

I can’t help you there.  You’d need to examine the contents of the wave files and compare that to the known behavior of the algorithm.

A waveform editor like Audacity may help, but that’s way off topic here.

Brian is right: this set of programs is far from the best way to achieve your purpose.
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