A computer-implemented method includes receiving, at a microphone of a voice-controlled device, a speech input, generating an electrical signal having a first gain level that is below a gain threshold for audible detection by a user, transmitting the electrical signal to the speaker and detecting, by the microphone, an audio signal that includes a combination of ambient noise and a probe audio signal, wherein the probe audio signal is output by the speaker based on the electrical signal. The method further includes determining a power level of the probe audio signal and determining a state of the display based on the power level of the probe audio signal.

A method including while receiving a live digital audio stream from one or more remote servers and outputting the live digital audio stream via a speaker of a client device, receiving the updated content schedule from the one or more remote servers, generating and displaying a real-time programming guide user-interface including the updated content schedule, the real-time programming guide user-interface including at least one content segment component corresponding to at least one of the content segment data in the updated content schedule, and, in response to a content selection command at the at least one content segment component, transmitting a content segment digital audio signal request to the one or more remote servers for a prior portion of the live digital audio stream corresponding to the content segment data; and, in response to receiving the prior portion of the live digital audio stream, ceasing outputting the live digital audio stream and outputting the prior portion of the live digital audio stream corresponding to the content segment data.

A content presenting method includes: starting a 3D application, in response to an instruction, a 3D application presenting a simulated object of an end user and a virtual screen for displaying live content in a virtual environment; receiving a content source address of the live content that is provided by another user equipment on an anchor to a content providing server, and that is currently broadcasted on the content providing server; obtaining audio data and video data of the live content from the content providing server, based on the content source address; rendering the audio data and the video data to obtain video content and audio content; playing the audio content in the 3D application; obtaining content of interaction between the anchor of the video content displayed using the virtual screen and the simulated object; and displaying the video content and the content of interaction on the virtual screen.

Sporting event television broadcast equipment and systems, particularly for football games, pickups live audio from the teams' coaches for inclusion in the broadcast of the game, thereby greatly enhancing the viewing experience for television viewers of the game. The audio feeds can include always-on microphone pickup from each team's head coach, as well as offensive and defensive play calls that are radioed from each team's assistant coaches to players on the field.

A data packing circuit and a data packing method operated in a high definition multimedia interface (HDMI) transmitter that adopts a fixed rate link mode are provided. The data packing circuit can output a plurality of FRL super blocks at a plurality of unit times. In the data packing method, multiple valid data inputted to the data packing circuit at the (i).sup.th unit time are mapped to a plurality of FRL characters, and the FRL characters are stored to the first or the second buffer. At the same time, an amount of tri-byte of the multiple valid data is counted for determining number and positions for inserting gap characters to form the (i).sup.th FRL super block, which is outputted at the (i+1).sup.th unit time. The numeral ‘i’ is a positive integer.

A content presenting method includes starting, by user equipment, a 3D application, in response to an instruction for starting the 3D application, the 3D application presenting a simulated object and a virtual screen for the simulated object to watch video content, and receiving, by the user equipment, a content source address from a 3D application server, the content source address being of live content that is currently broadcasted on the 3D application server. The method further includes obtaining, by the user equipment, audio data and video data from a content providing server, based on the content source address, rendering, by the user equipment, the audio data and the video data to obtain the video content and audio content, playing, by the user equipment, the audio content in the 3D application, and displaying, by the user equipment, the video content, using the virtual screen.

There is provided systems and methods for performing actions based on light signatures. An exemplary system includes a light source, a light detector, a non-transitory memory storing a plurality of light signatures and a hardware processor. The hardware processor executes an executable code to illuminate, using the light source, a target object with a first light, collect, using the light detector, a second light being a reflection of the first light by the target object, match the second light with one of the plurality of light signatures, and perform an action in response to matching the second light with the one of the plurality of light signatures.

Embodiments of the present application disclose a method for audio and video processing and an electronic device. A first decoding result corresponding to main channel audio and a second decoding result corresponding to audio description are acquired according to audio data in an audio and video file; and the first decoding result as well as an audio mixed result of the first decoding result and the second decoding result are output respectively through different audio output devices, so that in a scenario where a normal user and a visually impaired user watch audio and video at the same time, the normal user and the visually impaired user can select different audio output devices for audio listening to ensure that the two do not affect each other, which satisfies the needs of the normal user and the visually impaired user to watch at the same time.

An apparatus, method and system for connecting High-Definition Multimedia Interface (HDMI) devices. A loopback device connects between a first source device and a sink device on a first connection; a second source device connects to the sink device on a second connection. The loopback device manages the first connection, passes transition-minimized differential signaling (TMDS) or fixed-rate link (FRL) signals through to the sink device, and outputs audio received from the sink device on the audio return channel (ARC) or enhanced audio return channel (eARC). In this manner, audio that originates from any source device may be output without requiring a direct connection to the loopback device.

An amplification system which includes a source of electrical audio signals, a first amplifier, a second amplifier, a plurality of loudspeakers, and a first phase of the first amplifier and a second phase of the second amplifier reproduced in parallel having a time delay between first and second phase amplification for out of phase correction. The time delay is configured to correct poor sound signals while amplifying weaker harmonics and sound signals of different frequencies, thereby adjusting sound output of the amplification system and acoustical characteristics of a room. The amplification system is useful for providing improved sound quality and increased audio efficiencies.