Audfprint fingerprint file

File Format
Name	Audfprint fingerprint file
Ontology	Electronic File Formats Audio and Music Audfprint fingerprint file
Extension(s)	.afpt, .afpk

audfprint is an audio fingerprinting utility, with native .afpt (precomputed fingerprint) and .afpk (precomputed fingerprint / "just the peaks", also called Columbia Peaks) file formats.

It was developed by Daniel Ellis at Columbia University. It was originally a MATLAB script. Newer versions are written in Python.

Identification

Files begin with ASCII "audfprinthash", or "audfprintpeak".

Sample files

• Many items at the Internet Archive Audio Archive include an .afpk file. Examples: [1], [2]

Links

• GitHub project (Python)
• https://labrosa.ee.columbia.edu/matlab/audfprint/ - MATLAB version
• Internet Archive announcement