An audio system and methods for detecting proximity between or engagement between a removable open-ear acoustic module and a host device. Upon detection of proximity or engagement, the audio system may adjust at least one device setting of the devices in the system. In some examples, the devices of the audio system are capable of obtaining specific identifying information about the other devices, and can be configured to adjust the at least one device setting based on device identity. For example, adjusting the device settings can include an adjustment to power state of the open-ear acoustic module, an audio equalization (EQ) setting, a volume setting, a bass level setting, a treble level setting, an Active Noise Reduction (ANR) setting, a user profile setting, selection of an algorithm of a plurality of algorithms related to data collection, a sensor calibration setting, and a user interface control setting.

An audio system and methods for detecting proximity between or engagement between a removable open-ear acoustic module and a host device. Upon detection of proximity or engagement, the audio system may adjust at least one device setting of the devices in the system. In some examples, the devices of the audio system are capable of obtaining specific identifying information about the other devices, and can be configured to adjust the at least one device setting based on device identity. For example, adjusting the device settings can include an adjustment to power state of the open-ear acoustic module, an audio equalization (EQ) setting, a volume setting, a bass level setting, a treble level setting, an Active Noise Reduction (ANR) setting, a user profile setting, selection of an algorithm of a plurality of algorithms related to data collection, a sensor calibration setting, and a user interface control setting.

An inspection device includes a first data storage unit configured to store a first data which is time series according to a state of an inspection object, a second data generation unit configured to generate second data, which is a spectrogram including a first frequency component, a time component, and an amplitude component by performing short-time Fourier transform on the first data, a third data generation unit configured to generate third data including the first frequency component, a second frequency component, and the amplitude component by performing Fourier transform on time-amplitude data for each first frequency component in the second data, respectively, and a determination unit configured to determine the state of the inspection object based on the third data.

In order to estimate the trajectory of a moving wave source, this trajectory estimation device (10) comprises: an acquisition unit (11) that acquires wave motion data based on wave motion detected by a plurality of sensors (100); a generation unit (12) that generates a spectrogram using the wave motion data; an extraction unit (13) that extracts a Doppler shift from the spectrogram; a selection unit (14) that selects, as a sensor pair, two sensors that satisfy a preset selection condition pertaining to the Doppler shift; and an estimation unit (15) that estimates the trajectory of a wave source, which is the source generating the wave motion, on the basis of the positional relationship between the sensors constituting the sensor pair and the relationship of the Doppler shift between the two sensors constituting the sensor pair.

One example process includes playing, via one or more loudspeakers, one or more audio frequencies at a particular sound pressure level, measuring, via a sensor, a displacement of a laser beam being emitted from a laser source through a slot of a soundbar housing the one or more loudspeakers during the playing, and determining, via a processor, one or more characteristic coefficients of a grommet based on the displacement.

One example process includes playing, via one or more loudspeakers, one or more audio frequencies at a particular sound pressure level, measuring, via a sensor, a displacement of a laser beam being emitted from a laser source through a slot of a soundbar housing the one or more loudspeakers during the playing, and determining, via a processor, one or more characteristic coefficients of a grommet based on the displacement.

A display control device includes a control unit that displays a sound pressure level distribution of predetermined sound data and a recordable range corresponding to a quantization bit depth during recording of the sound data on a display unit.

A mechanical failure detection system for mechanical equipment that has an acoustic capture device disposed in operative proximity to the mechanical equipment in order to acquire an operative state audio signal from the mechanical equipment, and a signal processor structured to processes the operative state audio signal and isolate a constituent signal from the operative state audio signal. The system further includes an operation processor that identifies operating parameters of the mechanical equipment that substantially correspond with the operative state audio signal an which facilitate analysis by a test processor that maintains base line audio signals and corresponding base line operational parameters so that it can compare them to the constituent signal and identify correlations between the constituent signal and the base line audio signal indicative of an operational state of the mechanical equipment such as a failure state.

A system for monitoring and identifying states of a semiconductor device, the system including at least one acoustic sensor for sensing acoustic emission emitted by at least one semiconductor device operating at a voltage of less than or equal to 220 V. the at least one acoustic sensor outputting at least one acoustic emission signal and a signal processing unit for receiving the at least one acoustic emission signal from the at least one acoustic sensor and for analyzing the at least one acoustic emission signal, the signal processing unit providing an output based on the analyzing, the output being indicative at least of whether the at least one semiconductor device is in an abnormal operating state with respect to a normal operating state of the semiconductor device.

An alert system for generating a signal indicating at least one aspect of sound within a workspace environment, the system comprising at least a first sensor positioned one of within and proximate a workspace, the at least a first sensor sensing at least one aspect of sound generated within the workspace and generating a signal indicating the at least one aspect, a communication device located within the workspace, the communication device configured to generate a signal perceivable within the workspace and a processor receiving signals from the at least a first sensor and linked to the communication device, the processor programmed to perform the steps of identifying when the at least one aspect exceeds a threshold value and driving the communication device to indicate that the at least one aspect exceeds the threshold value.