An offset-free LPF for π/4-shift QPSK signal generator. - Hiroshi Tanimoto; Tetsuro Itakura; Takashi Ueno; Akira Yasuda; Kazuhiro Oda (IEEE J. Solid State Circuits, 1996)

A third-order ΔΣ modulator using second-order noise-shaping dynamic element matching. - Akira Yasuda; Hiroshi Tanimoto; Tetsuya Iida (IEEE J. Solid State Circuits, 1998)

A 2.7-V, 200-kHz, 49-dBm, stopband-IIP3, low-noise, fully balanced gm-C filter IC. - Tetsuro Itakura; Takashi Ueno; Hiroshi Tanimoto; Akira Yasuda; Ryuichi Fujimoto; Tadashi Arai; Hideyuki Kokatsu (IEEE J. Solid State Circuits, 1999)

Analysis of Amino Acid Sequences by Statistical Technique. - Shusaku Tsumoto; Shoji Hirano; Akira Yasuda; Kouhei Tsumoto (JCIS, 2002)

A fourth-order bandpass Δ-Σ modulator using second-order bandpass noise-shaping dynamic element matching. - Takeshi Ueno; Akira Yasuda; Takafumi Yamaji; Tetsuro Itakura (IEEE J. Solid State Circuits, 2002)

A class-D amplifier using a spectrum shaping technique [audio power amplifier]. - Akira Yasuda; Takashi Kimura; Koichiro Ochiai; Toshihiko Hamasaki (CICC, 2004)

A single-chip audio system with delta-sigma DAC and class-D amplifier. - Akira Yasuda; Akinori Ohkubo; Katsuya Ogata; Hajime Ueno; Takeshi Anzai; Takashi Kimura; Koichiro Ochiai; Toshihiko Hamasaki (ISCAS, 2006)

A novel audio playback chip using digitally driven speaker architecture with 80%@-10dBFS power efficiency, 5.5W@3.3V supply and 100dB SNR. - Michitaka Yoshino; Mitsuhiro Iwaide; Daigo Kuniyoshi; Hajime Ohtani; Akira Yasuda; Jun-ichi Okamura (CICC, 2011)

A highly directional speaker with amplitude-phase control using a digitally direct-driven system. - Takemichi Ishikawa; Shuma Yokoyama; Noboru Harashima; Dai Takahashi; Jun Shiozawa; Michitaka Yoshino; Akira Yasuda (ICCE, 2014)

Factors of Patient Satisfaction Based on Distant Analysis in HCAHPS Databases. - Masumi Okuda; Akira Yasuda; Shusaku Tsumoto (ICDM Workshops, 2014)

Exploratory Analysis of Factors of Patient Satisfaction in HCAHPS Databases. - Masumi Okuda; Akira Yasuda; Shusaku Tsumoto (ICServ, 2014)

The Change of the Structure of Patient Satisfaction by Waiting Time, Length of Stay and Hospital Rebuilding in Japan. - Masumi Okuda; Akira Yasuda; Shusaku Tsumoto (ICDM Workshops, 2015)

The Effects of Waiting Time, Length of Stay, and Hospital Remodeling on the Structure of Patient Satisfaction. - Masumi Okuda; Akira Yasuda; Shusaku Tsumoto (ICServ, 2015)

A Data Mining Approach on the Structure of Patient Satisfaction in HCAHPS Databases. - Masumi Okuda; Akira Yasuda; Shusaku Tsumoto (ICHI, 2016)

Digital direct-driven speaker architecture using segmented pulse shaping technique. - Go Harumi; Satoshi Saikatsu; Michitaka Yoshino; Akira Yasuda (NEWCAS, 2016)

Speaker system with 100-W high output power and 0.17% THD using 9-V power supply with digitally direct-driven technique. - Yuki Furuya; Masayoshi Takahashi; Satoshi Saikatsu; Michitaka Yoshino; Akira Yasuda (ICCE, 2017)

An application for tree structure NSDEM to a directivity speaker with amplitude controlling a digitally direct driven speaker. - Hideki Akiyama; Sogami Yasutaka; Akira Yasuda; Saikatu Satoshi (MIXDES, 2017)

A high precision vernier type delta-sigma time to digital converter. - Kengo Ando; Takahiro Kate; Satoshi Saikatsu; Akira Yasuda (MIXDES, 2017)

A delta-sigma DAC with feedforward jitter-shaper reducing jitter noise. - Shuta Masuda; Satoshi Saikatsu; Michitaka Yoshino; Akira Yasuda (MIXDES, 2017)

A reduction of circuit size of digital direct-driven speaker architecture using segmented pulse shaping technique. - Shingo Noami; Satoshi Saikatsu; Akira Yasuda (SiPS, 2017)

Delta-Sigma ADC Based on Switched-Capacitor Integrator with FIR Filter Structure. - Satoshi Saikatsu; Akira Yasuda (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019)

Efficiency improvement method for low output of Multi Coils Motor. - Takeru Yoshida; Fumito Masuko; Akira Yasuda (IECON, 2020)

A CSRR Glucose Concentration Sensor with Increased Resolution Using the Q-value Enhancement Circuit Technique. - Uta Kobayashi; Yasuhiro Sugimoto; Koji Yoshimura; Kiichi Yamashita; Akira Yasuda (ICCE, 2024)

Digital direct-drive speaker system using MEMS speakers. - Reiji Takaki; Akira Yasuda (ICCE, 2024)

A Complementary Split Ring Resonator Sensor Optimized for Maximizing the Dip and Q-value in S21 Frequency Characteristics. - Koji Yoshimura; Yasuhiro Sugimoto; Uta Kobayashi; Kiichi Yamashita; Akira Yasuda (ICCE, 2024)