Muscle Fish has a developed a variety of algorithms for analyzing the content of an audio signal and producing metadata describing the signal. With this data, it is possible to query, search and classify the audio signal or collections of audio signals.
A variety of demos are available on our Audio Demos page. Try searching for audio files on the basis of how they sound, or classifying a live sound input. All the demos are based on proprietary Muscle Fish technology (available for licensing) that analyzes and compares sounds.
Muscle Fish's Audio Information Retrieval (AIR) DataBlade module for INFORMIX Universal Server is available now through Intraware, Inc. See a press release here.
A technical paper was published in IEEE MultiMedia in Fall of 1996 and is available here.