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Sociedade Brasileira de Telecomunicações

Uma Técnica para Ocultação de Partituras Musicais em Sinais de Áudio

n this paper, a technique for hiding musical scores in digital audio signals is described. The purpose is to provide for a user accessing the audio file of a music the respective musical score, which can be extracted by means of a systematic processing. The method employs musical scores written according to the ABC notation, which encodes the musical symbols in text format. The characters are converted into bits and embedded in the audio signal using a phase adjustment procedure in the discrete Fourier transform domain. Experiments which allow to evaluate the robustness of the method against mp3 compression are carried out and strategies for enhancing its performance are discussed.

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