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Airplay charts compiled by MusicTrace now available on radiocharts.com


MusicTrace products are based on two fundamental technologies:

Audio Fingerprinting

Audio fingerprinting technology permits automatic recognition of music recordings and commercials with the help of a computer. Just as a person can recognize music (s)he has heard on the basis of certain characteristics, a computer can recognize a previously trained title on the basis of certain signal statistics that are known as its fingerprint. This involves a strictly content-based recognition technique, the audio track does not need require any special processing in advance. [More information on audio fingerprinting]

MusicTrace products employ the audio fingerprinting technique AudioID®.

Audio Watermarking

Unlike audio fingerprinting technologies, audio watermarking techniques slightly modify the usable signal to embed additional information into the original signal. This modification is so slight, that human hearing cannot perceive any difference between the watermarked audio signal and the original signal. A computer can, however, distinguish between copies of the same title on the basis of this information. The technique used by MusicTrace embeds the watermark so robustly that the watermarks are still detectable by a computer even after analog conversion. [More information on audio watermarking]


The audio fingerprinting technology AudioID® and the audio watermarking technology utilized were developed at the Fraunhofer Institute for Integrated Circuits IIS in Erlangen and Fraunhofer Institute for Digital Media Technology IDMT in Ilmenau.

Fraunhofer IIS Fraunhofer IDMT
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