Proposed is a noise avoiding method for a space monitoring apparatus using a sound signal and, more specifically, is a technology that allows the space monitoring apparatus, which uses a sound signal to monitor a spatial condition, to avoid noise in a space to be monitored to correctly determine the spatial condition.

A sound leakage suppression apparatus for suppressing sound produced in a room from leaking outside thereof, includes a microphone, a display, and a processor configured to acquire information indicating sound insulation property of the room, based on the acquired information, determine a maximum volume level of sound that is permitted for each of a plurality of predetermined frequencies, control the microphone to collect sound produced in the room at a first time and determine a current volume level of the sound produced at the first time separately for each of the predetermined frequencies, and control the display to display both the maximum volume level and the current volume level for each of the predetermined frequencies.

A sound leakage suppression apparatus for suppressing sound produced in a room from leaking outside thereof, includes a microphone, a display, and a processor configured to acquire information indicating sound insulation property of the room, based on the acquired information, determine a maximum volume level of sound that is permitted for each of a plurality of predetermined frequencies, control the microphone to collect sound produced in the room at a first time and determine a current volume level of the sound produced at the first time separately for each of the predetermined frequencies, and control the display to display both the maximum volume level and the current volume level for each of the predetermined frequencies.

A method includes transmitting a focused ultrasound wave into a medium to form (i) an ultrasound intensity well within the medium that exhibits a first range of acoustic pressure and (ii) a surrounding region of the medium that surrounds the ultrasound intensity well and exhibits a second range of acoustic pressure that exceeds the first range of acoustic pressure. The method further includes confining an object within the ultrasound intensity well. Additionally, an acoustic lens is configured to be acoustically coupled to an acoustic transducer. The acoustic lens has a varying longitudinal thickness that increases proportionally with respect to increasing azimuth angle of the acoustic lens. Another acoustic lens is configured to be acoustically coupled to an acoustic that increases proportionally with respect to increasing azimuth angle of the segment.

A method for actuating an electric motor with a motor control signal with an application-specific frequency, which signal is provided by an electronic motor control unit, wherein the electric motor is used in a vehicle roof for activating a component of this roof while being connected to a region of the roof. Embodiments provide that the electric motor can be actuated by the motor control unit with an additional signal whose frequency and amplitude are suitable for causing the region of the vehicle roof to which said electric motor is connected to oscillate in order to generate sound.

A fluid device includes: a flow path through which a fluid flows; a pressure chamber spaced apart from the flow path in a first direction (Y direction) orthogonal to a flowing direction of the fluid in the flow path; a communication path that is formed along the Y direction and that communicates the flow path with the pressure chamber; and an ultrasonic wave transmitter configured to transmit ultrasonic waves to the fluid in the pressure chamber to generate a standing wave along the Y direction in the flow path.

Disclosed aspects relate to managing a set of devices using a set of acoustic emission data which indicates device-health of the set of devices. The set of devices is coupled with a set of acoustic emission sensors. Based on the set of acoustic emission data, a triggering event related to a first device of the set of devices is detected. Using the set of acoustic emission data, an event response which includes a first modification with respect to operation of the first device is determined. Establishment of the event response which includes the first modification with respect to operation of the first device is initiated.

Disclosed aspects relate to managing a set of devices using a set of acoustic emission data which indicates device-health of the set of devices. The set of devices is coupled with a set of acoustic emission sensors. Based on the set of acoustic emission data, a triggering event related to a first device of the set of devices is detected. Using the set of acoustic emission data, an event response which includes a first modification with respect to operation of the first device is determined. Establishment of the event response which includes the first modification with respect to operation of the first device is initiated.

In embodiments of the present invention, methods for reproducing an acoustic environment are described, which may include accessing a computer stored multi-dimensional sound profile of a first space, measuring a multi-dimensional sound profile in a second space, comparing multi-dimensional sound profile of the first space and the multi-dimensional sound profile of the second space, accessing the sound characteristics of an audio output device that will serve as the audio output device in the second space, and modifying the audio output of a media content of the audio output device taking into account the sound characteristics of the audio output device, wherein the modifying reduces the difference as determined in the comparing between the multi-dimensional sound profile of the first space and the multi-dimensional sound profile of the second space as output by the audio output device.

Methods and systems for concentrating and allowing for separation of nanoparticles from fluids use acoustically driven nanoparticle concentrators which have an aerogel as the reflecting material and include tuning capabilities to alter the location at which the particles are being concentrated.