1
Ishido So, Matsumoto Masaharu, Miyasaka Shuji, Fujita Takashi, Katayama Takashi: Audio decoding apparatus, signal processing device, sound image localization device, sound image control method, audio signal processing device, and audio signal high-rate reproduction method used for audio visual equipment. Matsushita Electric Industrial, September 11, 2000: TW405328 (61 worldwide citation)

An audio decoding apparatus is provided for receiving a bit stream on a block-by-block basis, decoding one block of the bit stream to form decoded audio data for a plurality of channels, and storing the decoded audio data for each of the plurality of channels in a memory device, thereby down-mixing ...


2
Fujita Takeshi, Miyasaka Shuji, Sueyoshi Masahiro, Kawamura Akihisa, Matsumoto Masaharu, Katayama Takashi, Ishito Tsukuru, Nakamura Tsuyoshi, Otomura Eiji: Digital audio signal decoding apparatus, decoding method and a recording medium storing the decoding steps. Matsushita Electric, November 17, 1999: EP0957639-A2 (55 worldwide citation)

A decoding apparatus according to the present invention comprises a stream input section (1) for separating an input bit stream into auxiliary information and encoded data, an auxiliary information analyzing section (2) for obtaining at least full channel configuration information by analyzing the a ...


3
Sueyoshi Masahiro, Matsumoto Masaharu, Miyasaka Shuji, Fujita Takeshi, Katayama Takashi, Abe Kazutaka, Nishio Kosuke, Kawamura Akihisa, Ishito Tsukuru, Nakamura Tsuyoshi, Otomura Eiji: Decoding device for multichannel audio bitstream. Matsushita Electric, October 6, 1999: EP0948141-A2 (50 worldwide citation)

A decoding device for decoding a bit stream defined by MPEG2 Audio Multichannel is provided. The bit stream including an MPEG1 compatible area and an MPEG2 multichannel extended area, the MPEG1 compatible area including MPEG1 side information. The decoding device includes: MPEG1 decoding means for d ...


4
Serikawa Mitsuhiko, Kawamura Akihisa, Matsumoto Masaharu, Numazu Hiroko: Music/voice discriminating apparatus.. Matsushita Electric, December 9, 1992: EP0517233-A1 (41 worldwide citation)

A music/voice discriminating apparatus is composed of a signal processing portion for effecting the signal processing upon input acoustic signals, a music/voice deciding portion for discriminating whether or not the input acoustic signals are music or voice, a first signal processing portion for set ...


5
Kawamura Akihisa, Matsumoto Masaharu, Serikawa Mitsuhiko, Numazu Hiroko: Sound amplifying apparatus with automatic howl-suppressing function.. Matsushita Electric, June 1, 1994: EP0599450-A2 (12 worldwide citation)

A sound signal picked-up by a microphone is processed in a howl suppresser including a digital filter. A frequency analyzer performs frequency analysis of the picked-up sound signal. A howl detector detects a howl contained in the sound signal from a result of frequency analysis by the frequency ana ...


6
Matsumoto Masaharu, Serikawa Mitsuhiko, Kawamura Akihisa, Numazu Hiroko, Norimatsu Takeshi, Tagami Ryo, Oda Mikio: Sound field controller.. Matsushita Electric, August 4, 1993: EP0553832-A1 (9 worldwide citation)

A sound field controller for generating apparent sound sources (CL, CR, LL, RR) by adjusting the amplitude and delay time of a sound signal so that the sound will be perceived by plural listeners (8, 8-1, 8-2) as sound coming from a location separated from the specific location of the front speakers ...


7
Kawamura Akihisa, Matsumoto Masaharu, Serikawa Mitsuhiko, Tagami Ryo, Sato Katsuaki, Yoshida Hiroko, Hashimoto Hikari: Apparatus for supplying control codes to sound field reproduction apparatus.. Matsushita Electric, March 7, 1990: EP0356995-A2 (7 worldwide citation)

Control codes for controlling processing of an audio signal by a sound field variation circuit to produce desired sound fields are recorded on a monaural track of a video tape concurrent with recording of video and audio signals, and can thereby be subsequently played back for producing sound fields ...


8
Serikawa Mitsuhiko, Matsumoto Masaharu, Kawamura Akihisa, Sato Katsuaki: Sound field control system.. Matsushita Electric, April 17, 1991: EP0422955-A2 (7 worldwide citation)

In the process of forming the effect sound for reproducing a sound field, a down-sampling part for reducing the sampling frequency of the digital signal is disposed before the step of the digital operation which becomes the central part of the forming process, by which a large amount of operation pr ...


9
Yamagishi Jun C O Ohi Seisakus, Shiota Kouichi C O Ohi Seisaku, Matsumoto Masaharu C O Ohi Sei: Automatic door latching system.. Ohi Seisakusho, June 28, 1989: EP0321958-A2 (7 worldwide citation)

Herein disclosed is an automatic door latching system for a motor vehicle having a vehicle body (2) and a door (1). The automatic door latching system comprises a door lock device (38) carried by said door to move therewith, the lock device having a latch plate which is pivotal to assume a full-open ...


10
Ogawa Michiko, Kawamura Akihisa, Matsumoto Masaharu, Date Toshihiko, Tamura Tadashi, Nakama Yasutoshi: Sound field controller and control method.. Matsushita Electric, August 9, 1995: EP0666556-A2 (6 worldwide citation)

A sound field controller of the invention reproduces a sound field which provides a distance perspective depending on a position of a sound image for a listener. The sound field controller includes: an A/D converter; a signal processing section for processing the digital signal using predetermined p ...