Two 1/f fluctuations in sustained phonation and their roles on naturalness of synthetic voice. - Naofumi Aoki; Tohru Ifukube (ICECS, 1996)

Development of a rule-based speech synthesis system for the Japanese language using a MELP vocoder. - Naofumi Aoki (EUSIPCO, 2000)

A Fragile Digital Watermarking Technique by Number Theoretic Transform. - Hideaki Tamori; Naofumi Aoki; Tsuyoshi Yamamoto (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

A Packet Loss Concealment Technique for VoIP Using Steganography. - Noriko Komaki; Naofumi Aoki; Tsuyoshi Yamamoto (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

A Band Extension Technique for G.711 Speech Using Steganography. - Naofumi Aoki (IEICE Trans. Commun., 2006)

Potential of Value-Added Speech Communications by Using Steganography. - Naofumi Aoki (IIH-MSP, 2007)

A Technique of Lossless Steganography for G.711. - Naofumi Aoki (IEICE Trans. Commun., 2007)

A Technique of Lossless Steganography for G.711 Telephony Speech. - Naofumi Aoki (IIH-MSP, 2008)

Improvement of a Band Extension Technique for G.711 Telephony Speech by Using Steganography. - Naofumi Aoki (IIH-MSP, 2009)

Lossless Steganography Techniques for IP Telephony Speech Taking Account of the Redundancy of Folded Binary Code. - Naofumi Aoki (NCM, 2009)

A Semi-lossless Steganography Technique for G.711 Telephony Speech. - Naofumi Aoki (IIH-MSP, 2010)

A Band Extension Technique for Narrow-Band Telephony Speech Based on Full Wave Rectification. - Naofumi Aoki (IEICE Trans. Commun., 2010)

Audio Trick Art Based on Information Misreading Technique. - Naofumi Aoki (IIH-MSP, 2011)

Embedding Multiple Audio Data Using Information Misreading Technique. - Naofumi Aoki (IIH-MSP (2), 2017)

A study on a digital watermarking technique for music data using distortion effect. - Yuto Matsunaga; Tetsuya Kojima; Naofumi Aoki; Yoshinori Dobashi; Tsuyoshi Yamamoto (IWSDA, 2017)

A Digital Modeling Technique for Distortion Effect Based on a Machine Learning Approach. - Yuto Matsunaga; Naofumi Aoki; Yoshinori Dobashi; Tsuyoshi Yamamoto (APSIPA, 2018)

Evaluation of Machine-Made Scores for Music Games Generated by a Deep Neural Network. - Atsuhito Udo; Naofumi Aoki; Yoshinori Dobashi; Tsuyoshi Yamamoto (ICAIIC, 2019)

Some Evaluations on a Digital Watermarking Technique for Music Data Using Distortion Effect. - Yuto Matsunaga; Tetsuya Kojima; Naofumi Aoki; Yoshinori Dobashi; Tsuyoshi Yamamoto (IEICE Trans. Inf. Syst., 2019)

A Study on Automatic Music Genre Classification Based on the Summarization of Music Data. - Yudai Kikuchi; Naofumi Aoki; Yoshinori Dobashi (ICAIIC, 2020)

A Black Box Modeling Technique for Distortion Stomp Boxes Using LSTM Neural Networks. - Yuto Matsunaga; Naofumi Aoki; Yoshinori Dobashi; Tetsuya Kojima (ICAIIC, 2020)

Development of an Inaudible Sound Communications System Based on a Machine Learning Approach. - Kosei Ozeki; Naofumi Aoki; Yoshinori Dobashi (ICAIIC, 2020)

Designing a Symbol Classifier for Inaudible Sound Communication Systems Using a Neural Network. - Kosei Ozeki; Naofumi Aoki; Saki Anazawa; Yoshinori Dobashi; Kenichi Ikeda; Hiroshi Yasuda (ISITA, 2020)

Distortion based Watermark Extraction Technique Using 1D CNN. - Yuto Matsunaga; Naofumi Aoki; Yoshinori Dobashi; Tetsuya Kojima (ICAIIC, 2021)

Improving the Recognition Accuracy of a Sound Communication System Designed with a Neural Network. - Kosei Ozeki; Naofumi Aoki; Saki Anazawa; Yoshinori Dobashi; Kenichi Ikeda; Hiroshi Yasuda (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Some Evaluations on Spectrogram Art Communications Exchanging Secret Visual Messages. - Naofumi Aoki; Kenichi Ikeda; Hiroshi Yasuda; Ying Shen; Jin Hou (ICDSP, 2022)