Pitch recognizer C++ API

[tbop]

Hi there,

I'm looking for a straightforward pitch recognizer C++ API (like every real tuner do). Does anybody here know how to find this kind of API?

What I would like to do is basically extract the fundamental frequency from a given wave sample (in real-time), then convert it to the closest pitched note, and finally into a proper NoteOn MIDI signal.

I already tried to Google it, but I haven't found anything so far.

Any ideas?

Thanks

[tbop]

Ok I think I finally found out some interesting stuffs here:

http://aubio.org/doc/files.html

[TheVinn]

Hey, how's the beat detector in that lib?

[tbop]

I have no idea unfortunately, but the lib sounds fine, you shouldn't have any issues.

[symfonysid]

Aubio's beat tracking was tested in the 2006 Mirex. Check the results for Brossier: http://www.music-ir.org/mirex/wiki/2006 ... ng_Results

[forart.eu]

I believe you could "grab" it (along with, why not, other interesting features) from Mixx:

Full Feature List

• Cross-platform (Windows XP/Vista/7, Mac OS X, Linux)
• Free and open source (GPL v2)
• Parallel waveform displays
• Waveform summaries
• MP3, OGG, WAVE, and FLAC playback
• Extra playback formats through plugins
• Fast, database-powered library
• Shoutcast and Icecast broadcasting
• Automatic crossfading with Auto DJ
• Crates and playlists
• Reads iTunes and Rhythmbox libraries
• Pitch-independent time stretch (key lock)
• Vinyl emulation
• Hot cues
• Looping
• Wave recording
• BPM detection and estimation
• Bulk BPM analysis
• Multichannel soundcard support (playback and capture)
• Multiple soundcard support
• Adjustable EQ shelves
• Crossfader curve control
• Skinnable interface with extra skins bundled
• Advanced MIDI scripting engine
• Multiple simultaneous MIDI controllers
• Adjustable pitch range
• Ramping pitchbend controls
• Multi-core CPU support
• 24-bit/96000 Hz playback and capture
• Crystal clear audio
• Hardware video acceleration
• ..

BTW, as I *always* suggest, collaboration is better than "stealing" !

[aaronleese]

Also - if you want a quick and easy one that uses FFT peak (on mac only - accelerate framework), take a look here:

viewtopic.php?f=2&t=8297