1
Shuichi Mori, Yasumasa Fukatsu, Takashi Sakakibara: Automatic sound volume control device. Pioneer Electronic, Sughrue Mion Zinn Macpeak & Seas, November 12, 1985: US04553257 (92 worldwide citation)

An automatic sound volume control device for use in a device such as a radio or tape player used in a high ambient noise environment. The noise and sound signal levels above predetermined reference levels are detected and a control signal is produced having a level determined in accordance with the ...


2
Shinjiro Kato, Hisashi Kihara, Fumio Tamura, Shuichi Mori: On-board vehicle automatic sound volume adjusting apparatus. Pioneer Electronic Corporation, Perman & Green, May 4, 1993: US05208866 (35 worldwide citation)

AN on-board vehicle automatic sound volume adjusting apparatus which adjusts the level of an input audio signal in accordance with the difference between the input audio signal level and the running noise level inside the vehicle and which compresses the input audio signal in terms of amplitude acco ...


3
Hisashi Kihara, Shinjiro Kato, Fumio Tamura, Shuichi Mori: Digital audio signal processing apparatus. Pioneer Electronic Corporation, Perman & Green, May 11, 1993: US05210806 (33 worldwide citation)

Disclosed herein is a digital audio signal processing apparatus of a type wherein a graphic equalizer including a plurality of filters connected in series to one another is subjected to arithmetic operation processing to be defined to thereby output the result of its processing as data therefrom. Wh ...


4
Shinjiro Kato, Hisashi Kihara, Fumio Tamura, Shuichi Mori: Automatic sound volume controller. Pioneer Electronic Corporation, Wegner Cantor Mueller & Player, April 21, 1992: US05107539 (29 worldwide citation)

An automatic sound volume controller for use with audio equipment mounted on a vehicle adapted that the level of an input audio signal and that of the noises coming inside the cabin in running state are detected, and the difference therebetween is obtained. By use of different gain levels reflecting ...


5
Shuichi Mori: Signal processing circuit. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak & Seas, May 15, 1984: US04449229 (28 worldwide citation)

A signal processing circuit capable of producing a pair of output signals having a correlated coefficient from a single irregular input signal. When such output signals are used for reproduction in an audio equipment, sounds are emanated from loudspeakers, so as to provide an auditor with a directio ...


6
Shunsuke Ishimitsu, Hisashi Kihara, Shuichi Mori: Signal processing circuit for audio apparatus. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak & Seas, March 7, 1995: US05396562 (28 worldwide citation)

A signal processing circuit for an audio apparatus has a variable gain amplifier whose gain is varied in accordance with a gain controlling signal supplied thereto. The signal processing circuit comprises a gain setting section having a plurality of tables of input-output characteristics according t ...


7
Akio Tokumo, Kazunori Takagi, Shuichi Mori: Headrest-mounted acoustic device. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak and Seas, September 29, 1987: US04696370 (23 worldwide citation)

A headrest-mounted acoustic device including at least a speaker mounted on the right or left side of a headrest provided on a seat, a cover mounted in the sound radiating direction of the speaker, and a sound radiating portion communicating with a chamber provided behind the cover and having an area ...


8
Shinjiro Kato, Hisashi Kihara, Fumio Tamura, Shuichi Mori: Device for correcting a sound field in a narrow space. Pioneer Electronic Corporation, Sughrue Mion Zinn Macpeak & Seas, June 2, 1992: US05119420 (21 worldwide citation)

A sound field correcting device provides for a natural acoustic localization of the outputs of right and left channels of an acoustic sound source. At least one of right and left channel audio signals is delayed to create a phase difference between the right and left channel audio signals, and to th ...


9
Shunsuke Ishimitsu, Hisashi Kihara, Shuichi Mori: Signal processing circuit in an audio device. Pioneer Electronic Corporation, Finnegan Henderson Farabow Garrett & Dunner, October 19, 1993: US05255325 (18 worldwide citation)

A signal processing circuit in an audio device includes a variable gain control section for providing a variable amplification gain to an input signal in response to a gain control signal, an input signal level detecting section for detecting a level of the input signal and for generating a correspo ...


10
Nobuo Utsugi, Hisashi Kihara, Shuichi Mori, Junichi Fuse, Takashi Miyake, Yoshikatsu Ikata: Recording medium player apparatus. Pioneer Electronic, Sughrue Mion Zinn Macpeak & Seas, April 23, 1991: US05010437 (15 worldwide citation)

A recording medium player apparatus including an open/close body which is disposed so as to openably cover a recording medium insertion slot formed in the front surface portion of a housing. The open/close body has an operation portion for controlling the operation of a play mechanism. The apparatus ...