An acoustic dose meter is provided comprising a housing, and a cylindrical seat for staging a pressurized medicine canister. The housing includes at least one compartment for housing electronics and passageways for connecting electronics for power and data communication. A microprocessor including a transient memory containing machine instruction is also included. Additionally, a power source connected to the microprocessor, a power switch connected to the microprocessor and the power source for booting the microprocessor are added. At least one visual display device connected to the microprocessor for displaying available doses is provided. A first set of acoustic sensors connected to the microprocessor and adapted as acoustic sound generators and a second set of acoustic sensors connected to the microprocessor and adapted as acoustic soundwave recorders are implemented to detect and analyze frequencies enabling determining of dosing count availability.

A fluid control valve includes a valve main body and a vibration sensor. The valve main body has an actuator section and a valve section. The sensor detects vibration generated in the valve main body. The vibration is generated by a water hammer phenomenon. The water hammer phenomenon generates impact when the valve element comes into contact with the valve seat and no fluid leaks between a valve element and a valve seat. The fluid control valve further includes a controller to execute an abnormality determining program and determines the valve main body to be normal when the sensor detects the vibration with an amplitude exceeding the predetermined threshold, while determines the valve main body to be abnormal when the sensor does not detect the vibration with an amplitude exceeding the predetermined threshold.

A fluid control valve includes a valve main body and a vibration sensor. The valve main body has an actuator section and a valve section. The sensor detects vibration generated in the valve main body. The vibration is generated by a water hammer phenomenon. The water hammer phenomenon generates impact when the valve element comes into contact with the valve seat and no fluid leaks between a valve element and a valve seat. The fluid control valve further includes a controller to execute an abnormality determining program and determines the valve main body to be normal when the sensor detects the vibration with an amplitude exceeding the predetermined threshold, while determines the valve main body to be abnormal when the sensor does not detect the vibration with an amplitude exceeding the predetermined threshold.

Device and method for measuring and visualizing the sound level in a place where at least two people are gathered, comprising at least one sound detector which is connected to at least one visualization device in such a way that the visualization device responds to sound at the place. The visualization device is arranged so that it provides a gradually increasing response to gradually decreasing sound level. The visualization can be instantaneous or show average values for a defined period of time. The device is typically reversible so that it also provides a decreasing response to increasing noise levels. Instructions are given for use in gathering locations such as school classes, kindergarten rooms, meeting rooms, party rooms and group rooms for people with special behavioural challenges.

Device and method for measuring and visualizing the sound level in a place where at least two people are gathered, comprising at least one sound detector which is connected to at least one visualization device in such a way that the visualization device responds to sound at the place. The visualization device is arranged so that it provides a gradually increasing response to gradually decreasing sound level. The visualization can be instantaneous or show average values for a defined period of time. The device is typically reversible so that it also provides a decreasing response to increasing noise levels. Instructions are given for use in gathering locations such as school classes, kindergarten rooms, meeting rooms, party rooms and group rooms for people with special behavioural challenges.

Systems and methods to provide vocal acoustic attenuation for an acoustic sensor are disclosed, comprising attenuating an acoustic signal using an attenuation material covering at least a portion of a first surface of the acoustic sensor.

An apparatus and system for addressing road noise are provided. The apparatus is configured to determine at least one from among a location of a vehicle and a noise feature of a road on which the vehicle is traveling, retrieve road noise cancellation information based on the determined at least one from among the location of the vehicle and the noise feature of the road on which the vehicle is traveling, and output a signal to cancel road noise based on the road noise cancellation information. The apparatus may be installed in vehicle to address road noise heard by occupants of the vehicle.

In some examples, a system includes an article of personal protective equipment (PPE) comprising one or more sensors, the one or more sensors configured to generate usage data that is indicative of an operation of the article of PPE; and at least one computing device comprising a memory and one or more computer processors that: receive the usage data that is indicative of the operation of the article of PPE; apply the usage data to a safety learning model that predicts a likelihood of an occurrence of a safety event associated with the article of PPE based at least in part on previously generated usage data that corresponds to the safety event; and perform, based at least in part on predicting the likelihood of the occurrence of the safety event, at least one operation.

A method includes determining multiple sound-exposure doses (111) for multiple time intervals of a discretized and rolling sequence (100) of time intervals (101-109). The method also includes determining a cumulative sound-exposure dose based on a combination of the sound-exposure doses (111). The combination comprises a weighted contribution of the sound-exposure dose of at least one earliest time interval of the rolling sequence (100) of time intervals (101-109).

Example methods and systems for displaying one or more indications that indicate (i) the direction of a source of sound and (ii) the intensity level of the sound are disclosed. A method may involve receiving audio data corresponding to sound detected by a wearable computing system. Further, the method may involve analyzing the audio data to determine both (i) a direction from the wearable computing system of a source of the sound and (ii) an intensity level of the sound. Still further, the method may involve causing the wearable computing system to display one or more indications that indicate (i) the direction of the source of the sound and (ii) the intensity level of the sound.