AudioID
Encyclopedia
AudioID is a commercial technology for automatically identifying audio material using acoustic fingerprint
s. Audio
data is recognized automatically and associated information (track or artist name, for example) is provided in real time. The technology was developed by the Fraunhofer Institute for Digital Media Technology (IDMT). The IDMT is managed by Prof. Karlheinz Brandenburg
, who led the development of the MP3
format. AudioID technology is a part of the international ISO/IEC MPEG-7
audio standard of the Moving Picture Experts Group
(MPEG). In 2005 German-based company Magix
AG acquired patents for the technology. Mufin is a commercial product based on the AudioID.
is created from the output sound, and this is then stored in a database. The signature can be linked to additional meta information in a database, e.g. artist or title information. As soon as an audio signal's signature is available, AudioID can identify a sample of the original audio, even if the sample is only a few seconds long. Alteration of the output sound material, e.g. bias or equalization, MP3 encoding or acoustic transfer does not influence the quality of the recognition process. The rate of recognition normally amounts to 99%.
or digital
libraries. Commercial products which utilize the AudioID technology include diverse MAGIX products, such as MP3 Maker.
Acoustic fingerprint
An acoustic fingerprint is a condensed digital summary, deterministically generated from an audio signal, that can be used to identify an audio sample or quickly locate similar items in an audio database....
s. Audio
Sound
Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations.-Propagation of...
data is recognized automatically and associated information (track or artist name, for example) is provided in real time. The technology was developed by the Fraunhofer Institute for Digital Media Technology (IDMT). The IDMT is managed by Prof. Karlheinz Brandenburg
Karlheinz Brandenburg
Karlheinz Brandenburg is an audio engineer who has contributed to the audio compression format MPEG Audio Layer 3, more commonly known as MP3.- Biography :...
, who led the development of the MP3
MP3
MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is a patented digital audio encoding format using a form of lossy data compression...
format. AudioID technology is a part of the international ISO/IEC MPEG-7
MPEG-7
MPEG-7 is a multimedia content description standard. It was standardized in ISO/IEC 15938 . This description will be associated with the content itself, to allow fast and efficient searching for material that is of interest to the user. MPEG-7 is formally called Multimedia Content Description...
audio standard of the Moving Picture Experts Group
Moving Picture Experts Group
The Moving Picture Experts Group is a working group of experts that was formed by ISO and IEC to set standards for audio and video compression and transmission. It was established in 1988 by the initiative of Hiroshi Yasuda and Leonardo Chiariglione, who has been from the beginning the Chairman...
(MPEG). In 2005 German-based company Magix
MAGIX
MAGIX AG is an international provider of software, online services and digital contents for multimedia communications based in Berlin, Germany. The Company also operates from branches in the USA, Canada, the UK, France, Italy, Spain and the Netherlands...
AG acquired patents for the technology. Mufin is a commercial product based on the AudioID.
Process
First, a clear digital signatureDigital signature
A digital signature or digital signature scheme is a mathematical scheme for demonstrating the authenticity of a digital message or document. A valid digital signature gives a recipient reason to believe that the message was created by a known sender, and that it was not altered in transit...
is created from the output sound, and this is then stored in a database. The signature can be linked to additional meta information in a database, e.g. artist or title information. As soon as an audio signal's signature is available, AudioID can identify a sample of the original audio, even if the sample is only a few seconds long. Alteration of the output sound material, e.g. bias or equalization, MP3 encoding or acoustic transfer does not influence the quality of the recognition process. The rate of recognition normally amounts to 99%.
Application
Audio recognition technologies like AudioID are used everywhere where sound material has to be recognized and identified automatically, e.g. radioRadio
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...
or digital
Digital
A digital system is a data technology that uses discrete values. By contrast, non-digital systems use a continuous range of values to represent information...
libraries. Commercial products which utilize the AudioID technology include diverse MAGIX products, such as MP3 Maker.