is there any ways to make the computer recoqnize the notes recorded through the microphone?

i would like to record what im playing on my no-midi-keyboard and further arrange/mix/correct/improve the sounds on the computers. but then if thats not possible, how about making the keyboard into a midi device. please help! i dont want to spend a few hundred B$ yet.

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There are several tools, from free to expensive, that you can use. Search "audio to midi" or "wav to midi". Be warned, however, than if the audio has a low signal-to-noise ratio (if it's noisy or your dynamics are soft) or has a rich harmonic content (vocals particularly come to mind) it can freak the tracker out a fair bit and cause crazy, glitchy notes that have nothing to do with the actual root.
Melodyne

That is the best but it is not free, allows you to record a sound then just move the sound to a different note/pitch. Or do a search for audio to midi, wav to midi, etc.
While Melodyne will work amazingly (as I have had experience using it for vocals and brass instruments), it just can't recognize multiple voices (i.e. piano, guitar, more than one vocalists, etc). The new one will be able to, but due to release some time later this year. Just know that unless you're working with a DAW or other such multi-track editor (in which case you can just shell out $300 for the plug-in version), it will cost you about $700. Hope this helps!
sound918 years ago
This is cheapest way I know of. It is a little crude, but it will work. Download a program called audacity from http://audorgacity.sourcefe.net/. I use it all the time for editing songs, voice overs for our theater and much more. You would need an adapter from 1/4" to 1/8" in order for the output of the keyboard. Then, plug it into the microphone port on your computer. Then once in audacity, you can choose microphone as your input source and edit away. It is almost a professional level program.
Have you played with audacity? It's freeware but it's fairly a powerful tool for playing with actual sounds, it can export MP3s aswell. For recognizing notes you could probably match by frequency, it depends on the kind of instrument, software and other stuff...
gmoon8 years ago
Search for wav to MIDI.

There are a few open source projects out there. Commercial sequencers such as Sonar (Cakewalk) have modules for it built-in.

None of this software is perfect, though. Few, if any, work in real-time. All work best with single-note tracks--chords and such are difficult to analyze.