Implementasi Teknik Watermarking menggunakan FFT dan Spread Spectrum Watermark pada Data Audio Digital

HANNAN HARAHAP, GELAR BUDIMAN, LEDYA NOVAMIZANTI

Abstract


ABSTRAK

Penggunaan teknologi dan internet yang berkembang dengan pesat menyebabkan banyak pemalsuan dan penyebaran yang tidak sah terhadap data digital. Oleh karena itu, sangat diperlukan suatu teknologi yang dapat melindungi hak cipta data multimedia seperti audio. Teknik yang sering digunakan dalam perlindungan hak cipta adalah watermarking karena teknik ini memiliki tiga kriteria utama dalam keamanan data, yaitu robustness, imperceptibility, dan safety. Untuk itu, pada penelitian ini dirancang suatu skema yang dapat melindungi hak cipta data audio. Metode yang digunakan adalah Fast Fourier Transform, yang mengubah data audio asli ke dalam domain frekuensi sebelum dilakukan proses penyisipan watermark dan proses ekstraksi watermark. Watermark disebar pada komponen yang paling signifikan dari spektrum magnitude audio host. Teknik watermarking pada penelitian ini dapat menghasilkan Signal-to-Noise Ratio di atas 20 dB dan Bit Error Rate di bawah 5%.

Kata kunci: Audio watermarking, Copyright Protection, Fast Fourier Transform, Spektrum magnitude


ABSTRACT

The use of technology and internet has grown rapidly that causes a lot of forgery and illegal proliferation of digital data. It needs a technology that can protect the copyright of multimedia data such as audio. The most common technique in copyright protection is watermarking because it has three main criteria in data security: robustness, imperceptibility, and safety. This research created a scheme that can protect a copyright of audio data. The method that we used is Fast Fourier Transform. This method changes the original audio data into frequency domain before the embedding and extraction process. The watermark is spread into the most significant component of the magnitude spectrum of audio host. This technique obtains Signal-to-Noise Ratio above 20 dB and Bit Error Rate below 5%.

Keywords: Audio watermarking, Copyright Protection, Fast Fourier Transform, Magnitude spectrum


References


allahpour, M., & Megias, D. (2012). High Capacity Robust Audio Watermarking Scheme Based on FFT and Linear Regression. International Journal of Innovative Computing, Information and Control (IJICIC), 2477-2489.

Zeng, G., & Qiu, Z. (2008). Audio Watermarking in DCT Embedding Strategy and Algorithm. International Conference on Signal Processing (ICSP) (pp. 2193-2196).

Pooyan, M., & Delforouzi, A. (2007). Adaptive and Robust Audio watermarking in Wavelet Domain. Intelligent Information Hiding and Multimedia Signal Processing (pp. 287-290).

Dhar, P., & Echizen, I. (2011). Robust FFT Based Watermarking Scheme for Copyright Protection of Digital. Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP) (pp. 181-184).




DOI: https://doi.org/10.26760/elkomika.v4i1.98

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ISSN (print) : 2338-8323 | ISSN (electronic) : 2459-9638

Publisher:

Department of Electrical Engineering Institut Teknologi Nasional Bandung, Indonesia

Address: 20th Building  Institut Teknologi Nasional Bandung PHH. Mustofa Street No. 23 Bandung 40124, Indonesia

Contact: +627272215 (ext. 206)

Email: jte.itenas@itenas.ac.id________________________________________________________________________________________________________________________


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