Abstract: An acceleration device can prevent abnormal acceleration of a vehicle even when an accelerator pedal is erroneously abnormally stepped on instead of a brake pedal, and alert a driver of occurrence of erroneously stepping on the accelerator pedal. Assuming that a driver erroneously steps on an accelerator pedal hard instead of a brake pedal, a magnet of a fixation part of a transmission/blocking mechanism and a magnetic opposing surface of a movable part are disengaged and separated from each other. Accordingly, movement of the accelerator pedal with respect to an accelerator lever is blocked, and the accelerator lever is returned to an idling state due to the action of the accelerator mechanism. Also, an impact and sound of the disengagement of the magnet is transmitted to the driver, and the foot takes a position different from a normal position. Accordingly, the driver can notice erroneous stepping on the accelerator pedal.

Abstract: Provided are a frequency characteristics converting apparatus, a frequency characteristics converting method, and a program that make natural reproduced sound of a speaker compatible with howling prevention. In the frequency characteristics converting apparatus, a sound emitter is located at a first position on an inside of a vehicle, and in response to an increase in magnitude of noise at the first position, volume of target sound, collected by a sound collector installed at a second position, is increased when the target sound is emitted by the sound emitter, and a degree of signal processing that is applied to the target sound is increased.

Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

Abstract: This invention provides a wafer processing method comprising a process of irradiating a wafer to be processed placed on the upper surface of a sample table arranged in a processing chamber with light or electromagnetic waves to heat and remove a compound layer of a film layer that is preliminarily formed on the upper surface of the film layer of the upper surface of the wafer, wherein in the process, by receiving the light or electromagnetic waves reflected by the upper surface of the wafer, a signal indicating a temporal change in intensity using the wavelength of the light or electromagnetic waves as a parameter is corrected using information of the intensity of the light or electromagnetic waves detected by receiving the light or electromagnetic waves at a position on the circumferential side of the upper surface of the sample table.

Abstract: Operations are appropriately changed in accordance with the use method. A keyword detection unit 11 generates a keyword detection result indicating a result of detecting an utterance of a predetermined keyword from an input voice. A voice detection unit 12 generates a voice section detection result indicating a result of detecting a voice section from the input voice. A sequential utterance detection unit 13 generates a sequential utterance detection result indicating that a sequential utterance has been made if the keyword detection result indicates that the keyword has been detected and if the voice section detection result indicates that the voice section has been detected.

Abstract: Provided is an acoustic system for a user who uses a seat of an aircraft, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones.

Abstract: A cancellation device according to one aspect of the invention is a cancellation device that cancels noise coming to a region in a vicinity of a loudspeaker, the cancellation device including at least two loudspeakers 1 and one reference microphone 3, in which the cancellation device is configured such that an acoustic signal emitted in a sound emission direction of a same loudspeaker and an acoustic signal emitted in an opposite direction collide with each other, the at least two loudspeakers 1 and the reference microphone 3 are arranged on a same plane, the at least two loudspeakers 1 emit cancellation sound that cancels the noise in synchrony, and the plane is a plane including a boundary between a sound emission direction of the two loudspeakers 1 and a direction opposite to a sound emission direction.

Abstract: Provided is a technology for generating an elimination filter coefficient for suppressing degradation of noise elimination performance.

Abstract: Provided is an acoustic system for a user who uses a seat of an aircraft, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones.

Abstract: Provided is an acoustic system for a user who uses a seat of an aircraft, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones.

Abstract: There is provided an acoustic system for a user who uses a seat of an airplane, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones. An acoustic system including a speaker system including one speaker unit that emits a sound based on an acoustic signal of a predetermined sound source, in which a sound emitted from the speaker unit is hearable in a region to be audible near the speaker unit, and by a sound emitted from the speaker unit in a back surface direction coming around to a front surface direction, the sound emitted from the speaker unit in the front surface direction and the sound emitted from the speaker unit in the back surface direction cancel each other in a region in the front surface direction far from the speaker unit.

Abstract: Operations are appropriately changed in accordance with the use method. A keyword detection unit 11 generates a keyword detection result indicating a result of detecting an utterance of a predetermined keyword from an input voice. A voice detection unit 12 generates a voice section detection result indicating a result of detecting a voice section from the input voice. A sequential utterance detection unit 13 generates a sequential utterance detection result indicating that a sequential utterance has been made if the keyword detection result indicates that the keyword has been detected and if the voice section detection result indicates that the voice section has been detected.

Abstract: Provided is a sound pickup loudspeaker apparatus that has a mechanism for detecting situations in which sound amplification should not be performed and stopping sound amplification from a speaker. The sound pickup loudspeaker apparatus is installed in a vehicle. At least a sound pickup position and a sound amplification position are assumed to be present in the vehicle.

Abstract: A danger detection system for detecting a danger on a road, the danger that changes over time and may not be a danger due to the change over time, the danger detection system including a vibration acquisition unit 11 configured to acquire an acoustic signal collected by a microphone mounted on a vehicle when the vehicle passes through a region on a predetermined road, a danger determination unit 12 configured to determine whether the acoustic signal is derived from the danger, a danger location detection unit 2 configured to determine whether the danger is present in the region on the predetermined road based on the number of times an acoustic signal acquired from each of the plurality of vehicles is determined to be derived from the danger, and a danger information notification unit 3 configured to notify a communication device that can pass through the region on the predetermined road of danger information that is information about a region on a road determined to have a danger.

Abstract: An abnormality detection device 1 includes: a vibration acquisition unit 11 configured to acquire an acoustic signal generated during passage of a vehicle on a road; a frequency domain conversion unit 12 configured to convert the acquired acoustic signal into a frequency domain signal; an unexpectedness determination unit 13 configured to determine whether there is unexpectedness at each predetermined frequency using the frequency domain signal; and an abnormality determination unit 14 configured to determine whether there is an abnormality in the road based on the number of frequencies at which it is determined that there is the unexpectedness.

Abstract: A sound that cannot be heard by surrounding users is reproduced. A reproduction device (110) includes an n-th reproduction unit that outputs a 2n?1th acoustic signal (n=1, . . . , N) that is an acoustic signal obtained on the basis of a reproduction target and a 2n-th acoustic signal that is an acoustic signal having a phase opposite to that of the 2n?1th acoustic signal. A speaker system (120) includes a set of an n-th speaker unit pair (122) including a positive speaker unit (1221) that emits a 2n?1th acoustic signal-based sound and a negative speaker unit (1222) that emits a 2n-th acoustic signal-based sound, the n-th speaker unit pair being installed at a position close to a user's head.

Abstract: A road condition estimation device 2 includes: a reception unit 21 that receives pieces of sensor information from automobiles respectively, each piece of sensor information including positional information that is information regarding a position at which an automobile travels, and spectral information obtained by converting an acoustic signal generated when the automobile travels at the position into information in a frequency domain; a first classification unit 22 that classifies the pieces of spectral information respectively for roads on which the automobiles travel, based on pieces of positional information included in the pieces of sensor information thus received; and an estimation unit 23 that estimates a condition of a road for each of the pieces of spectral information classified by the first classification unit.

Abstract: Two speaker units are arranged on the right side from the center of a seat; two speaker units are arranged on the left side from the center of the seat; one of the two speaker units arranged on the right side is arranged at a position closer to the right ear of the user seated on the seat as compared with the other one of the two speaker units arranged on the right side; one of the two speaker units arranged on the left side is arranged at a position closer to the left ear of the user seated on the seat as compared with the other one of the two speaker units arranged on the left side; acoustic signals of a reproduction target are emitted from the two speaker units arranged on the right side to be opposite in phase to each other; the acoustic signals of the reproduction target are emitted from the two speaker units arranged on the left side to be opposite in phase to each other; and the acoustic signals are emitted from the two speaker units arranged at positions closer to the ears not to be opposite in phase

Abstract: Two speaker units are arranged on the right side from the center of a seat; two speaker units are arranged on the left side from the center of the seat; one of the two speaker units arranged on the right side is arranged at a position closer to the right ear of a user seated on the seat as compared with the other one of the two speaker units arranged on the right side; one of the two speaker units arranged on the left side is arranged at a position closer to the left ear of the user seated on the seat as compared with the other one of the two speaker units arranged on the left side; acoustic signals obtained on the basis of a reproduction target are emitted from the two speaker units arranged on the right side to be opposite in phase to each other; the acoustic signals obtained on the basis of the reproduction target are emitted from the two speaker units arranged on the left side to be opposite in phase to each other; and the acoustic signals are emitted from two speaker units arranged on the positions close

Abstract: A sound system includes: a control system that generates a control signal for erasing noise from a signal of the noise in a place close to a head of a user who uses a seat; a silencing speaker system that is installed at the place close to the head of the user who uses the seat and includes M speaker units each emitting a sound based on the control signal; and an emission suppression unit including at least a sound absorbing material that easily absorbs only a sound having a frequency greater than or equal to a predetermined value and configured to make it difficult for the sound having the frequency greater than or equal to the predetermined value emitted from the silencing speaker units to be emitted to a place other than an ear of the user.