Abstract: A communication system includes a first local area network (LAN), a first router that is operatively coupled to the first LAN, a second local area network (LAN), a second router that is operatively coupled to the second LAN, and a communication network that facilitates communication between the first router and the second router. The first router includes a communication control device having at least one processor that transmits first information indicating a connection relation of a first communication relay device to the first communication relay device connected via the Internet. The processor also receives the first information from the first communication relay device. The processor also causes connection information in accordance with the received information indicating the connection relation of the first communication relay device to be displayed on a display unit.

Abstract: A radio wave state analysis method acquires a radio wave for a place at which an audio system is sited, where the audio system includes one or more receiving devices for wireless reception of an audio signal; and generates relationship information indicative of a relationship between condition information and radio wave information indicative of the radio wave state, where the condition information includes at least one of time information indicative of a time when the radio wave state is measured or position information indicative of a position of the audio system.

Abstract: A word extraction method according to at least one embodiment of the present disclosure includes: converting, with at least one processor operating with a memory device in a device, received speech information into text data; converting the text data into a string of words including a plurality of words; extracting, with the at least one processor operating with the memory device in the device, a keyword included in a keyword database from the plurality of words; and calculating, with the at least one processor operating with the memory device in the device, importance levels of the plurality of words based on timing of utterance of the keyword and timing of utterance of each of the plurality of words.

Abstract: A speaker controller includes a switch that is inserted on a speaker wiring for supplying a sound signal to a speaker. A switch control circuit can extract and hold an ON/OFF control signal for instructing ON/OFF of the switch from an alternating-current signal supplied via the speaker wiring. A switch control circuit controls ON/OFF of the switch based on the ON/OFF control signal. A power supply circuit can generate a power supply voltage for operating the switch control circuit from the alternating-current signal supplied via the speaker wiring.

Abstract: A voice processing method realized by a computer includes compressing forward a first steady period of a plurality of steady periods in a voice signal representing voice, and extending forward a transition period between the first steady period and a second steady period of the plurality of steady periods in the voice signal. Each of the plurality of steady periods is a period in which acoustic characteristics are temporally stable. The second steady period is a period immediately after the first steady period and has a pitch that is different from a pitch of the first steady period.

Abstract: An audio apparatus includes a network interface, a receiver, at least one storage, and at least one processor. The processor is configured to determine that the audio apparatus is in a state capable of communicating with the other audio apparatus via the network interface. The processor is also configured to receive audio data via the receiver transmitted from an external apparatus different from the other audio apparatus. The processor is also configured to output a sound based on the received audio data. The processor is also configured to transmit the sound emission control information stored in the at least one storage to the other audio apparatus. The sound emission control information includes one or more of a sound volume, and a frequency band.

Abstract: An acoustic device includes an audio recording playback unit, an analysis unit, and an acoustic effect imparting unit. The audio recording playback unit records and plays back string independent acoustic signals for each string independent acoustic signal. The string independent acoustic signals respectively correspond to different strings of a stringed instrument and being independent from each other. The analysis unit analyzes at least one string independent acoustic signal from among the recorded string independent acoustic signals. The acoustic effect imparting unit imparts an acoustic effect to the at least one string independent acoustic signal for each string independent acoustic signal, based on a result of the analysis by the analysis unit.

Abstract: A reproduction control method realized by a computer includes analyzing an actual performance of an actual performer, controlling a reproduction of a performance sound of a musical piece represented by music data in accordance with a result of the analyzing of the actual performance, and outputting a message relating to the actual performance in accordance with the result of the analyzing of the actual performance.

Abstract: A sensor unit capable of protecting a piezoelectric element and detecting vibration and sound is provided. The sensor unit comprises a sheet-like piezoelectric element having a porous layer, and a sound propagation sheet covering at least one face of the piezoelectric element and permitting transmission of sound from a first face toward a second face of the sound propagation sheet. A difference in acoustic pressure level between the sound incident on the sound propagation sheet and the transmitted sound is preferably no greater than 10 dB. A surface density of the sound propagation sheet is preferably from 0.03 g/m2 to 100 g/m2. The sound propagation sheet is preferably flexible and preferably has voids. The sensor unit preferably further comprises a sound insulation sheet covering another face of the piezoelectric element and substantially preventing transmission of sound from a second face toward a first face of the sound insulation sheet.

Abstract: A signal transmission device includes a first antenna, a second antenna, a demodulation device, and a fixing member. The first antenna transmits radio waves containing a signal modulated at a first frequency. The second antenna receives the radio waves containing the signal via a medium. The demodulation device demodulates the signal and connected to the second antenna. The fixing member fixes the first antenna and the second antenna to the medium.

Abstract: Provided is an acoustic device with which it is possible to make reproduced sound able to be heard across a wide frequency range, from the front and from the rear. This acoustic device is provided with a flat speaker 3 configured to emit sound, from a front and a rear thereof, in a low frequency sound range. Also, provided therein are a first speaker 5F configured to emit sound, in a direction facing the front of the flat speaker, in a mid-to-high frequency sound range, and a second speaker 5R configured to emit sound, in a direction facing the rear of the flat speaker, in the mid-to-high frequency sound range.

Abstract: A reaction force generation unit includes an opposing member and a pressed body, which includes a base and domes, including a first dome, a second dome, and a third dome, bulging from the base. A leading end of each dome faces an opposing surface of the opposing member. When the pressing member presses the base, the leading ends of the domes move in a direction relatively close to the opposing member, where the domes become elastically deformed and cause an appropriate reaction force with respect to the handle. In a natural state where the pressed body is not subjected to any pressing force, axes of the domes are substantially parallel to each other, and acute angles formed by the axes and a normal line of the opposing surface are substantially similar to each other at a predetermined angle larger than zero degree.

Abstract: A music analysis method includes estimating a plurality of provisional points that are candidates for a specific point that has musical meaning in a musical piece from an audio signal of the musical piece by using a first process, selecting a part of a plurality of candidate points, which include the plurality of provisional points and a plurality of division points that divide intervals between the plurality of provisional points, as a plurality of selection points, and estimating a plurality of specific points in the musical piece from a result of calculating a probability that each of the plurality of selection points is the specific point by using a second process which is different from the first process.

Abstract: A headphone includes an electro-acoustic transducer, a housing, a noise cancelling circuit, a resonant frequency converter, and a switch. The electro-acoustic transducer is configured to reproduce sound from electrical signals. The housing is attached to the electro-acoustic transducer. The noise cancelling circuit is configured to attenuate a noise sound by adding an antiphase sound to the noise sound. The resonant frequency converter is configured to change a resonant frequency of a Helmholtz resonator configured to include a cavity in the housing and a tubular cavity communicating with the cavity. The switch is configured to perform alteration of the resonant frequency and switching of the noise cancelling circuit, in conjunction with each other.

Abstract: A chord identification method selects from among a plurality of chord identifiers a chord identifier that corresponds to an attribute of a piece of music represented by an audio signal, where the plurality of chord identifiers corresponds to respective ones of a plurality of attributes relating to pieces of music; and identifies a chord for the audio signal by applying a feature amount of the audio signal to the selected chord identifier.

Abstract: A sound output assembly includes an enclosure, a circuit board disposed in the enclosure, and including signal processing circuitry, and a speaker assembly. The speaker assembly includes a main body disposed inside the enclosure, and a supporting member configured to support the main body and having (i) a first portion fixed to the main body such that the first portion of the supporting member and the main body are formed as one body and (ii) a second portion fixed to the circuit board or to the enclosure. The main body includes an acoustic diaphragm in accordance with a signal supplied from the signal processing circuitry. The supporting member is configured to dampen vibration of the main body.

Abstract: A musical instrument to which a music stand is to be attached includes a performance operation unit that is arranged in a front portion of the musical instrument in a front-and-rear direction, and an attachment portion arranged at a position farther rearward than a rear end of the performance operation unit in the front-and-rear direction and farther forward than an intermediate position between the rear end of the performance operation unit and a rear end of the musical instrument in the front-and-rear direction, wherein the music stand is attached to the attachment portion such that a music score provision surface of the music stand is inclined by a first angle, and the first angle is in a range of 35 degrees to 55 degrees with respect to a horizontal plane.

Abstract: A sound reproducing apparatus includes a speaker, a microphone, and at least one processor. The at least one processor performs a process that includes hear-through processing and noise cancellation processing. The process also includes a storage task and a reading task. When detecting an occurrence of the trigger, the reading task reads control information of the event information of which execution is instructed by the trigger. The reading task also executes the hear-through processing and the noise cancellation processing in the signal processing task.

Abstract: A supporter for use in an electroacoustic transducer device including a housing and an electroacoustic transducer mounted to the housing using the supporter, the supporter including: a truncated conical shaped body including: a first portion configured to be held in contact with the electroacoustic transducer at a first position; and a second portion configured to be held in contact with the housing at a second position, wherein the second position is disposed spaced from the first position along an axial direction of an axis of the truncated conical shaped body.