A method of operating a PMUT electro-acoustical transducer, the method comprising: applying over an excitation interval to the transducer an excitation signal which is configured to emit corresponding ultrasound pulses towards a surrounding space, acquiring at a receiver reflected ultrasound pulses as reflected in said surrounding space, generating a reference echo signal, performing a cross-correlation of said acquired received ultrasound pulses with said reference echo signal, performing a measurement based on the cross-correlation results, in particular a measurement of the time of flight of the ultrasound pulses, wherein said reference echo is obtained by finding an oscillation frequency of the transmitter on the basis of a transmitter ringdown signal, finding an oscillation frequency of the receiver on the basis of a receiver ringdown signal, performing a frequency tuning respectively on the transmitter and the receiver on the basis of said respective oscillation frequencies, then sweeping an input frequency of the transmitter to find a frequency of the maximum displacement in the ringdown signal, performing a frequency tuning of the receiver at said frequency of the maximum displacement in the ringdown signal of the transmitter.

A measurement system includes earphones configured to be worn on left and right ears of a user respectively and a wireless terminal. The earphones measure and accumulate usage time during the earphones are used by a user, and transmit accumulated usage time to the wireless terminal. The wireless terminal acquires the accumulated usage time from the earphones, determines whether the accumulated usage time exceeds predetermined time, and generates a notification for urging the user to clean the earphones when it is determined that the accumulated usage time exceeds the predetermined time.

A headphone includes a detection unit configured to detect whether the headphone is worn on an ear of a user, an input detection unit configured to detect an input operation by the user, and a control unit configured to execute processing according to the input operation by the user. The control unit executes first processing in a case that a first input operation by the user is detected while the wearing of the headphone on the ear of the user is detected, and executes second processing different from the first processing in a case that the first input operation by the user is detected while no wearing of the headphone on the ear of the user is detected.

Embodiments include an audio system comprising a plurality of microphones disposed in an environment, wherein the plurality of microphones is configured to detect one or more audio sources, and generate location data indicating a location of each of the one or more audio sources relative to the plurality of microphones; and at least one processor communicatively coupled to the plurality of microphones, wherein the at least one processor is configured to receive the location data from the plurality of microphones, and define a plurality of audio pick-up regions in the environment based on the location data, the plurality of audio pick-up regions comprising a first audio pick-up region and a second audio pick-up region, wherein the plurality of microphones are configured to deploy a first lobe within the first audio pick-up region and a second lobe within the second audio pick-up region.

Computer technology for determining a possibility of an emerging hearing issue in a user based on the user's auditory interactions with a mobile device (for example, a smartphone), a wearable computer device (for example, a smart watch) and/or a virtual assistant (for example, an internet of things (IoT) enabled doorbell).

Computer technology for determining a possibility of an emerging hearing issue in a user based on the user's auditory interactions with a mobile device (for example, a smartphone), a wearable computer device (for example, a smart watch) and/or a virtual assistant (for example, an internet of things (IoT) enabled doorbell).

Provided are a method of training a neural network model, a method of recognizing an acoustic event and an acoustic direction, and an electronic device for performing the methods. A method of training a neural network model according to an example embodiment includes generating a heatmap indicating an acoustic event and an acoustic direction in which the acoustic event occurs by using training data, outputting a result of recognizing the acoustic event and the acoustic direction by inputting a feature extracted using the training data into a neural network model for recognizing the acoustic event and the acoustic direction of the training data, and training the neural network model by using the result and the heatmap.

In some embodiments, an audio system can be monitored by determining a sound suppression mode, and sampling information representative of an input signal and an output signal resulting from processing of the input signal in the sound suppression mode. The monitoring method can further include providing a display representative of the sampled information.

An example playback device is configured to receive a first stream of audio comprising source audio content to be played back by the playback device and record, via one or more microphones of the playback device, an audio signal output by the playback device based on the playback device playing the source audio content. The playback device is also configured to determine a transfer function between a frequency-domain representation of the first stream of audio and a frequency-domain representation of the recorded audio signal, and then determine an estimated frequency response of the playback device based on a difference between (i) the transfer function and (ii) a self-response of the playback device, where the self-response of the playback device is stored in a memory of the playback device. Based on the estimated frequency response, the playback device is configured to determine an acoustic calibration adjustment and implement the acoustic calibration adjustment.

An apparatus and method for monitoring audio output is disclosed. The apparatus may comprise means for providing one or more primary audio signals based on signals from one or more first microphones associated with an audio capture device and providing one or more secondary audio signals based on signals from one or more second microphones associated with an audio monitoring device, the audio monitoring device being separate from the audio capture device and configured for output of the one or more primary audio signals and the one or more secondary audio signals through one or more loudspeakers. The apparatus may comprise means for modifying one or both of the primary and secondary audio signals such that output of the one or more primary audio signals are distinguished over output of the one or more secondary audio signals.