A wireless audio system may include a transmitter unit and one or more battery-powered speaker units. The transmitter unit may receive audio signals from a head unit of a vehicle, be powered by the vehicle, and include wireless communication circuitry configured to wirelessly transmit the audio signals. The one or more battery-powered speaker units may be powered by one or more batteries during operation and may include additional wireless communication circuitry configured to receive the audio signals from the transmitter unit, one or more amplifiers to amplify the audio signals, and one or more speakers configured to produce sound based on the audio signals.

Systems and methods are provided that may be implemented to modify information of an audio data transmission based on one or more measured signal reception and/or transmission characteristics of a radio frequency (RF) signal data transmission that contains or otherwise conveys the audio data transmission. The modified audio data may then be acoustically reproduced in analog form as sound waves. Examples of signal reception characteristics of a RF signal data transmission that may be measured and used as a basis for modifying information of audio data of an audio data transmission include, but are not limited to, time Difference of Arrival (TDOA), Angle of Arrival (AoA), measured received signal strength, etc. Example signal transmission characteristics of a RF signal that may be measured and used as a basis for modifying information of audio data include, but are not limited to, Angle of Departure (AoD).

The application discloses a multichannel echo cancellation circuit and method and smart device. The multichannel echo cancellation circuit comprises signal extraction circuits, one ends of which are connected to the audio channels of the corresponding loudspeakers, to extract part of the audio signals from the audio channels of the corresponding loudspeakers as echo cancellation reference signals; the other ends of the signal extraction circuits are connected to the isolating circuits; the isolating circuits are interconnected to form one noise channel by which the echo cancellation reference signals extracted by each of the signal extraction circuits are formed into one channel of noise signal and then outputted to the processor; and the processor subtracts the noise signal from the sound signal collected by the microphone according to the noise signal inputted and a sound signal collected by a microphone, to obtain a signal that has been denoised.

Methods and apparatuses for addressing open space noise are disclosed. In one example, a method for masking open space noise includes outputting from a speaker a speaker sound corresponding to a flow of water, and displaying a water element system, the water element system generating a sound of flowing water.

A user device can be used to correct for a latency of an audio chain, which extends inclusively between an input and a speaker. The user device can communicate an indication to the speaker to play a sound at a first time, and record a second time at which a microphone on the user device detects the sound. The user device can compare the first and second times to determine a latency of the audio chain. The user device can communicate adjustment data corresponding to the determined latency to a component in the audio chain. The component can use the adjustment data to correct for the determined latency. In some examples, the user device can display instructions to position the user device a specified distance from the speaker, and can account for a time-of-flight of sound to propagate along the specified distance.

A localized sound projection system can coordinate the sounds of speakers to simulate the placement of an auditory cue in a 3D space. The system can include a plurality of speakers configured to output auditory signals and a sound localization controller configured to control the plurality of speakers to coordinate the auditory signals to simulate an origination location of a patient alarm. The sound localization controller can determine adjusted auditory signals and control a plurality of speakers to output the plurality of adjusted auditory signals. A method for dynamically controlling speaker settings in a medical environment can include determining volume settings corresponding to a speaker, monitoring a level of ambient noise corresponding to a room of a patient, controlling the volume settings of the speaker to reduce or increase a sound level output of a speaker. A patient monitoring system can be configured to physically manipulate medical devices in response to audible commands. The system can receive a plurality of vocal commands from a user and can manipulate various settings after confirmation from a user.

A system for detecting a cover sound profile, the cover sound profile including at least one sound sample produced from sound diffracted by a cover. The system includes a device comprising a housing and at least one speaker driver, at least on microphone, and at least one processor. The device is configured to selectively couple the cover via the housing and produce a sound via the at least one speaker driver. The at least one microphone configured to detect the sound and produce an electrical signal from the detected sound. The at least one processor is configured to receive the electrical signal determine, using machine learning, that the spectrogram meets or surpasses a similarity threshold to the sound cover profile, and change at least one characteristic of the device based on an adjustment operation associated with the determined cover sound profile.

Embodiments of the present disclosure provide a method and a device for cancelling an echo, and a computer readable storage medium. The device includes a loudspeaker configured to play an acoustic signal corresponding to an analog audio signal. The device further includes a microphone configured to convert a mixed acoustic signal received into a mixed audio signal. The mixed acoustic signal includes an echo of the acoustic signal played and an acoustic signal from a user. The device further includes an analog-to-digital converter configured to convert the analog audio signal into a digital signal as an echo reference signal. The device further includes an echo canceller, configured to cancel an echo component from the mixed audio signal using the echo reference signal to obtain a user audio signal corresponding to the acoustic signal from the user.

An audio playback device comprises: a microphone component configured to collect sound from outside and process the sound into an audio signal; a communication component configured to establish a communication connection with a separate device for communication; a memory configured to store a smart voice library containing a plurality of control command texts; and a main controller configured to perform voice recognition on the audio signal from the microphone component to generate voice text information, to perform matching between the voice text information and the plurality of control command texts in the smart voice library, and in response to the voice text information being successfully matched with one of the plurality of control command texts in the smart voice library, to execute a control command corresponding to the control command text, or control the communication component to transmit the control command to the separate device so as to control the separate device.

A signal processing method and Automotive Audio System 290 comprising a tripolar loudspeaker configuration housed in at least one automotive head-rest assembly 200 or 500, whose radiation pattern, in conjunction with inter-element delays and other design features, is such that that passengers are afforded temporal and amplitude cues for achieving the desired soundfield appropriate for a variety of audio program material. Optionally, some or all of the headrest assembly transducers are aligned and configured with a Floating Waveguide member 470.