WAVELET DETAIL COEFFICIENT AS A NOVEL WAVELET-MFCC FEATURES IN TEXT-DEPENDENT SPEAKER RECOGNITION SYSTEM

Syahroni Hidayat; Muhammad Tajuddin; Siti Agrippina Alodia Yusuf; Jihadil Qudsi; Nenet Natasudian Jaya

doi:10.31436/iiumej.v23i1.1760

Authors

Syahroni Hidayat University of Mataram https://orcid.org/0000-0002-5034-0535
Muhammad Tajuddin Universitas Bumigora
Siti Agrippina Alodia Yusuf Sekawan Institute https://orcid.org/0000-0002-2330-3237
Jihadil Qudsi Politeknik Medica Farma Husada
Nenet Natasudian Jaya Universitas Mahasaraswati Mataram

DOI:

https://doi.org/10.31436/iiumej.v23i1.1760

Keywords:

Discrete wavelet transforms, Feature extraction, Hidden Markov Models, Speaker recognition, Wavelet coefficients

Abstract

Speaker recognition is the process of recognizing a speaker from his speech. This can be used in many aspects of life, such as taking access remotely to a personal device, securing access to voice control, and doing a forensic investigation. In speaker recognition, extracting features from the speech is the most critical process. The features are used to represent the speech as unique features to distinguish speech samples from one another. In this research, we proposed the use of a combination of Wavelet and Mel Frequency Cepstral Coefficient (MFCC), Wavelet-MFCC, as feature extraction methods, and Hidden Markov Model (HMM) as classification. The speech signal is first extracted using Wavelet into one level of decomposition, then only the sub-band detail coefficient is used as the feature for further extraction using MFCC. The modeled system was applied in 300 speech datasets of 30 speakers uttering “HADIR” in the Indonesian language. K-fold cross-validation is implemented with five folds. As much as 80% of the data were trained for each fold, while the rest was used as testing data. Based on the testing, the system's accuracy using the combination of Wavelet-MFCC obtained is 96.67%.

ABSTRAK: Pengecaman penutur adalah proses mengenali penutur dari ucapannya yang dapat digunakan dalam banyak aspek kehidupan, seperti mengambil akses dari jauh ke peranti peribadi, mendapat kawalan ke atas akses suara, dan melakukan penyelidikan forensik. Ciri-ciri khas dari ucapan merupakan proses paling kritikal dalam pengecaman penutur. Ciri-ciri ini digunakan bagi mengenali ciri unik yang terdapat pada sesebuah ucapan dalam membezakan satu sama lain. Penyelidikan ini mencadangkan penggunaan kombinasi Wavelet dan Mel Frekuensi Pekali Cepstral (MFCC), Wavelet-MFCC, sebagai kaedah ekstrak ciri-ciri penutur, dan Model Markov Tersembunyi (HMM) sebagai pengelasan. Isyarat penuturan pada awalnya diekstrak menggunakan Wavelet menjadi satu tahap penguraian, kemudian hanya pekali perincian sub-jalur digunakan bagi pengekstrakan ciri-ciri berikutnya menggunakan MFCC. Model ini diterapkan kepada 300 kumpulan data ucapan daripada 30 penutur yang mengucapkan kata "HADIR" dalam bahasa Indonesia. Pengesahan silang K-lipat dilaksanakan dengan 5 lipatan. Sebanyak 80% data telah dilatih bagi setiap lipatan, sementara selebihnya digunakan sebagai data ujian. Berdasarkan ujian ini, ketepatan sistem yang menggunakan kombinasi Wavelet-MFCC memperolehi 96.67%.

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Author Biographies

Syahroni Hidayat, University of Mataram

Departement of Agricultural Engineering, University of Mataram, Mataram City, Indonesia

Research and Development, Sekawan Institute, Mataram City, Indonesia

Muhammad Tajuddin, Universitas Bumigora

Departement of Computer Science, Universitas Bumigora, Mataram City, Indonesia

Siti Agrippina Alodia Yusuf, Sekawan Institute

Research and Development, Sekawan Institute, Mataram City, Indonesia

Jihadil Qudsi, Politeknik Medica Farma Husada

Deptartement of Medical Record, Politeknik Medica Farma Husada, Mataram City, Indonesia

Nenet Natasudian Jaya, Universitas Mahasaraswati Mataram

Departement of Management, Universitas Mahasaraswati Mataram, Mataram City, Indonesia

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