how to get started or know techonlogy they use for shazam or intonow? [closed]

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Its really amazing to see technology like shazam and IntoNow(has been acquired by Yahoo!).

I wanted to know how they develop such a product?

what technology they use?

what architecture they follow for building?

how they build the audio tracing technology? where with a slice of audio they trace a million or more records and get the details

Is there any sit开发者_开发知识库es or books where i can learn those?

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For Shazam, you might find these two links interesting:

• http://laplacian.wordpress.com/2009/01/10/how-shazam-works/
• http://www.ee.columbia.edu/~dpwe/papers/Wang03-shazam.pdf (paper of the shazam inventor)