Yes, I know Google Scholar didn't exist in 2002, but there were papers anyway: https://scholar.google.com/scholar?q=audio+fingerprint&hl=en&as_sdt=0%2C5&as_ylo

Yes, I know Google Scholar didn't exist in 2002, but there were papers anyway: https://scholar.google.com/scholar?q=audio+fingerprint&hl=en&as_sdt=0%2C5&as_ylo=&as_yhi=2002 https://scholar.google.com/scholar?q=audio+fingerprint&hl=en...