If your question is about audio processing, and you feel it's too theoretical for Stack Overflow, you might want to try asking it on Signal Processing Stack Exchange. You can read their definition of what's on-topic at the site, and maybe look at some of their top voted [audio] questions to see if your question looks like it would fit in.
A couple of other Stack Exchange sites that might also be suitable, based on things you mentioned in your question, include:
and, of course:
All that said, I suspect a big part of the reason why your questions may have been poorly received is because your writing is quite hard to make sense of. Even with rene's spelling and grammar edits to your question above, some parts of it are still hard to understand, and I'm not even 100% sure I've correctly understood what you really want to ask about.
I'm guessing that English isn't your first language. If so, you might want to look for a suitable forum in your own native language and ask your question there. Unfortunately, there aren't too many of those on the Stack Exchange network yet (although we do nowadays have localized versions of Stack Overflow in Portuguese, Spanish, Russian and Japanese), but there are still quite a few decent forums and Q&A sites in various languages even outside the SE network.
If you can't find a suitable site to ask your question in your own language, my best suggestion (besides practicing your English e.g. by reading lots of well written books, which works but will take a lot of time and effort) would be to ask your question as clearly as possible. Use short and simple sentences. Use lots of examples. Say the most important things several times, in different ways, so that people are more likely to understand you. Don't use words if you're not sure what they mean. And use a dictionary to make sure that the words you use really mean what you think they mean.
For example, "programmation" is not an English word. In this case, it's easy enough to guess that you probably meant "programming", but it's also a mistake that you could've easily caught yourself using an English dictionary and/or a spell checker. On the other hand, your "sound wave picture" is a grammatically correct phrase consisting of perfectly valid English words, but I'm not sure what you really mean by it. If I Google for it, this is the first result I get. And if that's what you mean, I'm not sure why you'd want to turn a picture like that back into sound, or even if it's possible (although, apparently, sometimes it is).