Title :
Watermark-enabled value added services to broadcast audio
Author :
Löytynoja, Mikko ; Keskinarkaus, Anja ; Cvejic, Nedeljko ; Seppänen, Tapio
Author_Institution :
Univ. of Oulu, Oulu
Abstract :
Digital watermarking is a method for embedding secret data into digital signals. We present a novel service that uses watermarking to add metadata into radio broadcast music. A user can record the music with a mobile phone from radio loudspeakers and extract the watermark. The watermark can contain, for example value adding metadata about the song or a link to an external server that can provide the user a possibility to buy a CD with the song in question, or a ticket to the artistpsilas next concert. This solution offers a new channel for mobile commerce. The method is tested against sampling rate changes and DA/AD conversion in noisy environment, where the audio is played through loudspeakers and recorded using a mobile phone. The success ratio of the message extraction was 83 % in the experiments, while the subjective quality was graded on average as perceptible but not annoying.
Keywords :
audio coding; digital audio broadcasting; loudspeakers; music; watermarking; digital audio broadcast; digital watermark; meta data; mobile commerce; mobile phone; radio broadcast music; radio loudspeaker; secret data embedding; value added service; Business; Data mining; Digital audio broadcasting; Loudspeakers; Mobile handsets; Radio broadcasting; Sampling methods; Testing; Watermarking; Working environment noise; DA/AD; audio watermarking; frequency hopping; multiple watermarking; spread spectrum;
Conference_Titel :
Digital Ecosystems and Technologies, 2008. DEST 2008. 2nd IEEE International Conference on
Conference_Location :
Phitsanulok
Print_ISBN :
978-1-4244-1489-5
Electronic_ISBN :
978-1-4244-1490-1
DOI :
10.1109/DEST.2008.4635140
