Panasonic Intellectual Property Corporation of America

Panasonic Intellectual Property Management Co., Ltd.

Nippon Steel Sumitomo Metal Corporation

Nippon Steel Corporation

Panasonic Corporation

Fine Sinter Co., Ltd

Central Japan Railway Company

Railway Technical Research Institute

Panasonic Holdings Corporation

Atsushi Sakaguchi

Takanori Kato

Takahiro Fujimoto

Toshiyuki Matsumura

Kazutaka Asabe

Shuji Saiki

Tsuyoki Nishikawa

Hiroshi Nogami

Hiroki Furukawa

Takeshi Nakano

Naruo Miyabe

Kazuki Funase

Akiko Fujise

Sawako Kano

Yuki Ichikawa

Yasushi Karino

Yuiko Sakayama

Yoshiyuki Uchinono

Kohhei Hayashida

Takeshi Kurita

Kimitake Okugawa

Akira Fukuoka

Satoru Nakano

Tomohiro Otsuka

Takashi Shindo

Noboru Urata

Tokitake Okahira

Seiji Kanamori

Jun Asano

Syoji Kuroki

Nobuo Shiraishi

Takashi Maejima

Yusuke Wakabayashi

Shin-ichi Saga

Akihisa Kawamura

Osamu Kondo

Manabu Kubota

Kenji Tamura

Aki Yoneda

Isao Kakuhari

Kazuya Nomura

Takafumi Yuasa

Tomomi Matsuoka

Go Adachi

Isao Shimazoe

Kazumichi Kawasaki

Nobuhiko Washio

Yoshihiro Tatsumi

Takanori Katou

Hajime Takami

Mikio Yoneyama

Shin-Ichi Saga

An attachment structure is a structure that attaches an annular brake disk to an attachment object member that is a wheel or a disk body of a railway vehicle. The attachment structure includes a fastening member and an elastic member. The elastic member is disposed between a nut of the fastening member and the brake disk. The elastic member has a member body having a tubular shape, and a flange. The flange is connected to an end part on the nut side among two end parts of the member body. The flange protrudes outward from the member body and contacts an outer peripheral portion of the nut.

Attachment structure of brake disk for railway vehicle, and brake disk unit using same

A loudspeaker device includes: a first loudspeaker that outputs a sound; a second loudspeaker that is adjacent to the first loudspeaker in a predetermined direction and outputs a sound in a direction intersecting with a direction in which the first loudspeaker outputs the sound; and a phase switching circuit that switches between a first switching state and a second switching state, the first switching state being a state in which an input sound signal is inputted to both the first loudspeaker and the second loudspeaker, the second switching state being a state in which the input sound signal is inputted to one of the first loudspeaker and the second loudspeaker while an inverted sound signal obtained by inverting a phase of the input sound signal is inputted to the other of the first loudspeaker and the second loudspeaker.

Loudspeaker device

There is provided a brake lining for a railway vehicle that can reduce brake squeal in braking. A brake lining for a railway vehicle is used for a disc brake system of a railway vehicle. This brake lining includes a base plate, a sintered friction material, and a friction material supporting mechanism. The friction material supporting mechanism is disposed between the base plate and the sintered friction material and supports the sintered friction material in such a manner that the sintered friction material can move with respect to the base plate. The sintered friction material has a Young's modulus of 35.0 GPa or more.

Brake lining for railway vehicle, disc brake system for railway vehicle including same, and sintered friction material to be used for brake lining for railway vehicle

A speech translation device, for conversation between a first speaker making an utterance in a first language and a second speaker making an utterance in a second language different from the first language, includes: a speech detector that detects, from sounds that are input, a speech segment in which the first speaker or the second speaker made an utterance; a display that, after speech recognition is performed on the utterance, displays a translation result obtained by translating the utterance from the first language to the second language or from the second language to the first language; and an utterance instructor that outputs, in the second language via the display, a message prompting the second speaker to make an utterance after a first speaker's utterance or outputs, in the first language via the display, a message prompting the first speaker to make an utterance after a second speaker's utterance.

Speech translation device, speech translation method, and recording medium

An aerodynamic noise reduction memberincludes: a plate-like support portionsandwiched between a plurality of finsandof a brake diskand a rotating memberof a railroad vehicle; and a plurality of protruding portionsprotruding from the support portion. Each of the plurality of protruding portionsis provided in such a manner that, in a state in which the support portionis sandwiched between the plurality of finsandand the rotating member, each of the protruding portionspartially occludes between the fastening finand the anchoring finadjacent to each other in a circumferential direction of the brake disk

Aerodynamic noise reduction member, railroad vehicle brake disk unit, railroad vehicle disk brake, railroad vehicle wheel, and railroad vehicle

A brake disc for a railway vehicle includes: a disc plate portion that has a sliding portion of a front face; a plurality of radial fins that are provided on the rear face of a disc plate portion, and that have a shape that extends in the radial direction of the disc plate portion; and a circumferential rib that is provided between each pair of adjacent radial fins, and that has a shape that extends in the circumferential direction of the disc plate portion. A flow path for air is formed between the pair of radial fins, and the flow path for air is narrowed by the circumferential rib. On the circumferential rib, a gradual slope for suppressing fluctuations in an airflow that passes between the pair of radial fins is provided from a base part to a top part.

Brake disc for railway vehicle

This brake lining includes: a plurality of friction members which are arranged to be spaced from each other, each of the friction members having a front surface that is to face a sliding surface of a brake disk; a back board fastened to a back surface of each of the friction members; a base plate that supports each of the friction members at a region including a center portion of each friction member; and an elastic member disposed between the base plate and the back board, on a back surface side of each friction member. Two friction members that are adjacent to each other are taken as a pair, and the back board is fastened to each of the pairs of friction members. In each pair of friction members, the two friction members are arranged along the circumferential direction of the brake disk.

Brake lining for a railway vehicle and disk brake equipped with the same

A speech recognition device includes: an obtaining unit which obtains a speech uttered in a conversation between a first speaker and a second speaker; a storage which stores the speech obtained; an input unit which receives operation input; an utterance start detector which, when the input unit receives the operation input, detects a start position of the speech; and a speaker identification unit which identifies a speaker of the speech as the first speaker who has performed the operation input or the second speaker who has not performed the operation input, based on (i) first timing at which the input unit has received the operation input and (ii) second timing indicating the detected start position of the speech. The first and second timing are set for each speech of the first and second speakers. A speech recognizer performs speech recognition on the speech whose speaker has been identified.

Speech recognition device, speech recognition method, and recording medium

A speech translation device includes: a beamformer which forms, from a speech signal obtained by a microphone array, a first beam and a second beam having different directions; a direction designator which designates one of the first beam and the second beam according to a user operation; a signal-to-noise (SN) ratio calculator which calculates an SN ratio using the designated beam as a signal component in the SN ratio, and the other beam not designated as a noise component; a display determiner which determines whether recognition of the designated beam is difficult, using the calculated SN ratio, and determines a speaking instruction for overcoming difficulty of the recognition when determining that the recognition is difficult; and a display which displays the speaking instruction determined by the display determiner in a display area.

Speech translation device, speech translation method, and recording medium therefor

A speech translation apparatus includes: an estimator which estimates a sound source direction, based on an acoustic signal obtained by a microphone array unit; a controller which identifies that an utterer is a user or a conversation partner, based on the sound source direction estimated after the start of translation is instructed by a button, using a positional relationship indicated by a layout information item stored in storage and selected in advance, and determines a translation direction indicating input and output languages in and into which content of the acoustic signal is recognized and translated, respectively; and a translator which obtains, according to the translation direction, original text indicating the content in the input language and translated text indicating the content in the output language. The controller displays the original and translated texts on first and second display areas corresponding to the positions of the user and conversation partner, respectively.

Speech translation apparatus, speech translation method, and recording medium storing the speech translation method

A speaker device includes a speaker that outputs sound, a horn that emits sound output from the speaker, and a slit opening that is formed on a front surface of the horn, a vertical side of the slit opening being longer than a horizontal side of the slit opening. It is possible to prevent reflection of unnecessary sound in a vertical direction and enhance sound reproduction performance in a horizontal direction.

Speaker device and area reproduction apparatus

An area reproduction method includes converting a sound pressure distribution at each frequency of a reproduced sound from a sound pressure distribution in a frequency domain into a sound pressure distribution in a spatial frequency domain. The reproduced sound is realized on a control line, including a reproduction line in which sound waves emitted from a speaker array including a plurality of speakers arranged intensify with each other, and a non-reproduction line in which the sound waves weaken with each other. The method includes determining a spatial frequency for use in adjustment of the reproduced sound, in the sound pressure distribution in the spatial frequency domain, based on a positional relationship between the speaker array and the control line, and adjusting a sound pressure of the reproduced sound, which is to be output by each of the plurality of speakers using the determined spatial frequency.

Area reproduction method, computer readable recording medium which records area reproduction program, and area reproduction system

Provided is an area reproduction system including a reproduction unit including a speaker array, a processing unit that processes a reproduction sound to be output from each of a plurality of speakers included the speaker array, based on a control line including a reproduction line that strengthens a sound wave radiated from the speaker array and a non-reproduction line that weakens the sound wave, so that an audio beam of a predetermined sound pressure or more is radiated only to the reproduction line, the control line being substantially parallel with the speaker array and being set in a position separated from the speaker array, and a directional angle control unit that adjusts a phase of the reproduction sound so that a radiating direction of the audio beam is deflected by a specified angle, in which each of the plurality of speakers outputs the processed and adjusted reproduction sound.

Area reproduction system and area reproduction method

A brake disc for a railway vehicle is provided in which noise arising from the brake disc during high-speed rotation of a wheel is reduced by a large margin. A brake disc for a railway vehicle includes: a disc plate portion that has a sliding portion on a front face thereof; a plurality of through-holes that pass from the front face to a rear face of the disc plate portion and are arranged in alignment in the circumferential direction of the disc plate portion, the through-holes allowing bolts to pass therethrough for fastening together the disc plate portion and a wheel of the railway vehicle; and a groove provided to link a plurality of through-holes on the front face side of the disc plate portion.

A brake lining includes friction structures, back boards fastened to respective the friction structures, a base plate supporting the friction structures. Each of the friction structures includes two adjacent friction portions with a groove formed in the front surface in between, and a thin portion with a smaller thickness than thicknesses of the friction portions, the thin portion located in a position corresponding to the groove. Each of the friction structures is supported by the base plate on two support points located in the two friction portions respectively. The thin portion has a constant length, the length being equal to a maximum width of the friction portions and satisfying a condition that L/D is equal to or greater than 1.1, where D denotes the length of the thin portion and L denotes a distance between the two support points located in the friction portions.

Brake lining for a railway vehicle and disc brake equipped with the same

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Osaka, Japan

Atsushi Sakaguchi