A robot quizmaster that can localize, separate, and recognize simultaneous utterances for a fastest-voice-first quiz game. - Izaya Nishimuta; Naoki Hirayama; Kazuyoshi Yoshii; Katsutoshi Itoyama; Hiroshi G. Okuno (Humanoids, 2014)

Bayesian integration of sound source separation and speech recognition: a new approach to simultaneous speech recognition. - Kousuke Itakura; Izaya Nishimuta; Yoshiaki Bando; Katsutoshi Itoyama; Kazuyoshi Yoshii (INTERSPEECH, 2015)

Toward a quizmaster robot for speech-based multiparty interaction. - Izaya Nishimuta; Katsutoshi Itoyama; Kazuyoshi Yoshii; Hiroshi G. Okuno (Adv. Robotics, 2015)