Examples described herein relate to transitioning a playback session between portable playback devices such as “smart” headphones, earbuds, and handheld speakers with playback devices of a zone-based media playback system. Exemplary techniques facilitate continuity of playback when transitioning between locations (e.g., from at home to on-the-go or vice versa) or between listening paradigms (e.g., personal or out-loud playback of audio content). An example implementation includes detecting a swap trigger, determining the source playback device(s) and target playback device(s), and performing a playback session swap between the source playback device(s) and target playback device(s).

Disclosed is a wireless earbud, which includes: a charging port configured to be connected to an earbud charging voltage and receive/send a communication signal; a communication switching circuit including a first input/output terminal connected to the charging port and a second input/output terminal, the communication switching circuit is configured to switch to an off state when the charging port is connected to the earbud charging voltage, and switch to an on state when the charging port is connected to the communication signal; a communication on-off circuit connected to the second input/output terminal of the communication switching circuit; and an earbud control circuit configured to perform box entry detection on the wireless earbud and generate a corresponding detection signal to control the communication switching circuit to turn on/off an electrical connection between the earbud control circuit and the communication on-off circuit according to the detection signal.

Sound output devices, output systems and methods are provided. The sound output device includes a speaker; a communicator configured to perform communication with an external speaker and a content source that provides sound content to the external speaker; and a processor configured to recognize the external speaker in response to the device entering into a predetermined range from the external speaker, to perform pairing with the external speaker, to receive information about the content source from the external speaker, to receive the sound content from the content source based on the information about the content source, and to output the received sound content through the speaker.

The present disclosure relates to an image display apparatus and a method thereof. The image display apparatus according to an embodiment of the present disclosure comprises: a display; an external device interface configured to perform short-range communication; and a controller configured to: when the number of external devices communicatively connected with the image display apparatus is one, or when a bandwidth usage for the short-range communication is less than a predetermined reference, transmit an entire signal to the one external device, when the number of the external devices is two or more, and the bandwidth usage is greater than or equal to the predetermined reference, acquire a plurality of channel signals from the entire signal; transmit a first channel signal to a first external device among the external devices; and transmit a second channel signal to a second external device among the external devices.

A method performed by a processor of an audio source device. The method drives an audio output device of the audio source device to output a sound with an audio output signal. The method obtains a microphone signal from a microphone of the audio source device, the microphone signal capturing the outputted sound. The method determines whether the audio output device is a headset or a loudspeaker based on the microphone signal and configures an acoustic dosimetry process based on the determination.

In embodiments of an audio control module (318), audio data (310) is received from an audio data source (314) for output to an audio rendering device (316). An initialization input (326) can be received from a wireless audio headset (320) and, responsive to receiving the initialization input, the audio data (328) is communicated to the audio headset. The audio that would be generated from the audio data (322) at the audio rendering device (316) is also limited, such as by replacing the audio data (322) with null audio data, clearing audio data packets from the audio data (322), or by asserting a mute signal (336) to the audio rendering device.

In general, the subject matter described in this disclosure can be embodied in methods, systems, and computer-readable devices. An audio processing device plays a source audio signal, including causing the source audio signal to be audibly output by an electroacoustic transducer of a user earpiece. The audio processing device records, while playing the source audio signal, a recorded audio signal using the electroacoustic transducer. The audio processing device identifies one or more parameters that indicate how properties of the user earpiece affect playing of the source audio signal, at least one of the parameters being temperature dependent. The audio processing device determines a temperature value estimated to cause the source audio signal that was played by the audio processing device to result in the recorded audio signal, accounting for changes to the source audio signal that occur due to the one or more parameters.

An audio system includes a variable voltage power supply and at least one remotely positioned speaker assembly. The speaker assembly includes a driver (e.g., a tweeter) and a switching amplifier. Moving the switching amplifier to a remote position within the speaker assembly provides numerous design advantages and allows for utilization of a smaller power supply. In addition, the audio system is configured to detect a type of the at least one speaker and to adjust an output voltage of the variable voltage power supply accordingly. This allows for reconfiguration and/or expansion of original systems. A related method of detecting a type of speaker electrically connected to an audio source is also provided.

The present invention provides a judging circuit includes including a comparison module and a control module for positive and negative terminals of an earphone MIC and a method thereof, and an electronic device; the control module controls any one first terminal of two terminals of the MIC to inject an excitation current, and control the other second terminal of the two terminals to be connected to the ground via an analog switch, also to judge whether the first terminal and the second terminal is the positive terminal or the negative terminal according to comparison result information; the comparison module compares the current voltage with a preset reference voltage value after excitation current is injected into the first terminal and the second terminal is grounded to obtain comparison result information and to send it to the connected control module. The present invention improves the flow and process without two sets of detection device.

Disclosed are a method for controlling a sound box, a sound box and a non-transitory computer readable storage medium. The method is applied to the sound box in a sound box system. The sound box system includes at least two sound boxes, each sound box includes at least two first sensors, the at least two first sensors are provided on opposite sides of the sound box, each first sensor is configured to transmit and receive preset signals, and the method includes following operations: obtaining, by the sound box, a connection status with other sound boxes; when the sound box is wirelessly connected to the other sound boxes, obtaining first sensing data detected by a first sensor; determining target channel information according to the first sensing data; and outputting audio according to the target channel information.