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This is a sample project demonstrating the use of audio watermarks for synchronized mobile app & video/second-screen experiences. Read more about this proof of concept at:

Applications built using PhoneGap, targeting iOS. Learn more at


The following assets were used in the creation of this sample/proof of concept work:

Pitch Detector

Frequency/pitch detection code based upon


Video Source

TV Show website

Details & Images used within the proof of concept application:

Title Image:

Kings Landing:


The Wall/Castle Black:


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