M
Masayuki Nishiguchi
Researcher at Sony Broadcast & Professional Research Laboratories
Publications - 263
Citations - 3304
Masayuki Nishiguchi is an academic researcher from Sony Broadcast & Professional Research Laboratories. The author has contributed to research in topics: Signal & Audio signal. The author has an hindex of 33, co-authored 263 publications receiving 3299 citations. Previous affiliations of Masayuki Nishiguchi include Akita Prefectural University.
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PatentDOI
Speech signal transmitting and receiving apparatus with noise sensitive volume control
TL;DR: Aspeech signal transmitting receiving apparatus, such as a portable telephone set, includes a speech signal transmitting encoding circuit, a noise domain detection unit, a Noise level detection unit and a controller.
Patent
Digital signal encoding apparatus
TL;DR: In this paper, a digital signal encoding apparatus is proposed in which input digital signals are divided into a plurality of frequency bands so that the bandwidth of each frequency band will be greater the higher the frequency band, and the allowable noise level is set for each frequency bands on the basis of the energy value of each band.
Patent
Method and apparatus for encoding audio signals divided into a plurality of frequency bands
Yoshihito Fujiwara,Tomoko Umezawa,Masayuki Nishiguchi,Akune Makoto,Naoto Iwahashi,Kenzo Akagiri +5 more
TL;DR: In this paper, the authors proposed a digital signal encoding apparatus in which the digital signal is divided into frequency components in plural frequency bands and the bandwidth of the frequency bands is.Iaddend.
PatentDOI
Voice encoding method and voice decoding method
TL;DR: A compressed digital speech signal is encoded to provide a transmission error-resistant transmission signal to support voiced/unvoiced sound discrimination and CRC codes are presented.
Patent
High-efficiency encoding method
TL;DR: In this article, a high-efficiency method for encoding data on the frequency axis obtained by dividing an input audio signal in a block unit and converting it to frequency axis was proposed.