Sonic Quick Response Codes (SQRC) for embedding inaudible metadata in sound files

Sheppard, M., Toulson, R. and Lopez, M. 2016. Sonic Quick Response Codes (SQRC) for embedding inaudible metadata in sound files. 141st Audio Engineering Society Convention. Los Angeles 29 Sep - 02 Oct 2016 Audio Engineering Society.

TitleSonic Quick Response Codes (SQRC) for embedding inaudible metadata in sound files
AuthorsSheppard, M., Toulson, R. and Lopez, M.
TypeConference paper
Abstract

With the advent of high definition recording and playback systems, a proportion of the ultrasonic frequency spectrum can potentially be used as a container for unperceivable data and used to trigger events or to hold metadata in the form of text, ISRC (International Standard Recording Code) or a website URL. The Sonic Quick Response Code (SQRC) algorithm is proposed as a method for embedding inaudible acoustic metadata within a 96 kHz audio file in the 30-35 kHz bandwidth range. Thus any receiver that has sufficient bandwidth and decode software installed can immediately find metadata on the audio being played. SQRC data was mixed at random periods into 96 kHz music audio files and listening subjects were asked to identify if they perceived the introduction of the high frequency content. Results show that none of the subjects in this pilot study could perceive the 30-35 kHz material. As a result, it is shown that it is possible to conduct high-resolution audio testing without significant or perceptible artifacts caused by intermodulation distortion.

KeywordsAudio metadata high resolution
Year2016
Conference141st Audio Engineering Society Convention
PublisherAudio Engineering Society
Accepted author manuscriptAES 141_SQRC_Paper_V06_RT21062016.pdf
Publication dates
Published20 Sep 2016
Journal citationpp. 544-549
ISBN9781510833098
Web address (URL) of conference proceedingshttp://www.proceedings.com/32704.html
Web address (URL)https://secure.aes.org/forum/pubs/conventions/?elib=18466

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