Bestechnic (shanghai) Co., Ltd.

Weifeng Tong

Liang Zhang

Fei Luo

Mingliang Xu

Qianli Ma

Lei Yang

Qian Li

Guanghui Yang

Junhong Liu

Hua Zeng

Hua Li

Tianxu Wu

Dongsheng Cui

Lin Nan Li

Bin Luo

Yulong Wang

Zhiqi Wang

Jun Chen

Lu Chai

Wenyu Xiao

Zhichen Tu

Like Zheng

Yifeng Xiao

Binbin Guo

Xinwei Li

Rui Mei

Chunjiang Tu

Xiongzhi Chen

Wireless audio systems and methods for wirelessly communicating audio information are provided. The wireless audio system includes a first wireless transceiver and a second wireless transceiver. The first wireless transceiver includes a first communication module, a first codec, and a second communication module. The first communication module is configured to receive, from an audio source, first audio information. The first codec includes a first decoder configured to obtain second audio information by decoding the first audio information, and a first encoder configured to obtain third audio information by encoding the second audio information. The second communication module is configured to send the third audio information out. The second wireless transceiver includes a third communication module configured to receive the third audio information from the first wireless transceiver. The first communication module employs Classic Bluetooth, and the second communication module and the third communication module employ Low Energy (LE) Audio.

Wireless audio system and method for wirelessly communicating audio information

In certain aspects, a wireless multimedia apparatus and an operation method thereof are disclosed. The wireless multimedia apparatus includes a system on chip (SoC), including a memory configured to store code and a processor coupled to the memory. When the code is executed, the processor is configured to determine that a router is available and connected to a multimedia provider. The processor is configured to connect to the router based on configuration information associated with the router and receive multimedia data from the multimedia provider via the router. The processor is configured to determine whether the router is still available. Responsive to the router being unavailable, the processor is configured to turn on a softAP based on the configuration information associated with the router to connect to the multimedia provider via the softAP. The processor is configured to receive the multimedia data from the multimedia provider via the softAP.

Wireless multimedia apparatus and operation method thereof

A method for generating a 3D audio representation of an audio by a first wireless headphone: collecting a first audio signal; generating a first counting signal; generating a first synchronizing signal based on the first counting signal; and retrieving a portion of the first audio signal. The method includes, by a second wireless headphone: receiving a wireless signal from the first wireless headphone, indicating a first local clock of the first wireless headphone; synchronizing a second local clock of the second wireless headphone with the first local clock; collecting a second audio signal; generating a second synchronizing signal based on the second local clock; and retrieving a portion of the second audio signal. The method further includes generating, by a user equipment, the 3D audio representation of the audio based on the first and the second audio signals and the first and the second synchronizing signals.

Wireless audio system for recording an audio information and method for using the same

Embodiments of active noise control (ANC) headphones and operating methods thereof are disclosed herein. In one example, a headphone includes a speaker, an internal microphone, and a processor. The speaker is configured to play an audio of interest based on an audio source signal. The internal microphone is configured to obtain a mixed audio signal including a noise signal and the audio of interest played by the speaker. The processor is configured to determine a first current system parameter of the headphone based on the mixed audio signal at a first time point, and determine if the first current system parameter of the headphone is higher than a predetermined threshold to determine if the headphone is worn by a user.

Active noise control headphones

In certain aspects, a device for wireless transmission includes a transmission path, a feedback path, and a DPD control module. The transmission path includes a digital pre-distortion (DPD) conversion module configured to perform pre-distortion processing on an amplitude and a phase of a transmission signal based on a pre-distortion processing strategy. The transmission path further includes a power amplifier coupled to a downstream of the DPD conversion module and configured to amplify a power of the transmission signal. The feedback path is coupled to the transmission path at the downstream of the power amplifier and configured to generate a feedback signal. The feedback path includes a static gain compensation module configured to be activated during an initial time period of each frame to track and update a static gain for the feedback signal and configured to hold the static gain after the initial time period of each frame. The DPD control module is coupled to the feedback path and the DPD conversion module and configured to adjust the pre-distortion processing strategy based on an amplitude difference and a phase difference between the transmission signal and the feedback signal.

Device and method for wireless transmission

Embodiments of systems and methods for transmission of audio information are disclosed herein. In one example, a System on Chip (SoC) includes a wired transceiver module, a wireless module, a Frequency Modulation (FM) demodulation module, and an audio information codec module operatively coupled to the wired transceiver and the FM demodulation module. The wired transceiver module is configured to receive a data packet corresponding to first audio information. The wireless module is configured to receive an FM signal, corresponding to second audio information. The FM demodulation module is configured to output the second audio information based on demodulating the FM signal. The audio information codec module is configured to decode the first audio information and the second audio information based on the data packet and the demodulated FM signal, respectively.

Systems and methods for transmission of audio information

Embodiments of wireless audio systems and methods for operation mode switch of wireless headphones are disclosed herein. In one example, a wireless audio system includes a first wireless headphone and a second wireless headphone. The first wireless headphone is configured to establish a first short-range wireless link with an audio source; transmit, to a second wireless headphone, link information associated with the first short-range wireless link; and remove the first short-range wireless link with the audio source in response to the second wireless headphone successfully establishing a second short-range wireless link with the audio source based on the link information. The second wireless headphone is configured to receive, from the first wireless headphone, the link information associated with the first short-range wireless link; and establish the second short-range wireless link with the audio source based on the link information.

Operation mode switch of wireless headphones

A method realizes synchronous playing of audio data from an audio source by two or more wireless speakers. The method includes receiving at each of the wireless speakers first audio data packets sent by the audio source and determining a respective first time point for the receiving of the first audio data packets; processing the first audio data packets at each of the wireless speakers to generate respective second audio data packets, the second audio data packets each including audio data to be played with a fixed data length; setting a delayed play time and obtaining a playing time point at each of the wireless speakers, the obtaining of the playing time point being based on the respective first time point and the respective delayed play time; and playing the second audio data packets at each of the wireless speakers at the respective playing time point.

Method, device, loudspeaker equipment and wireless headset for playing audio synchronously

Embodiments of active noise control (ANC) headphones and operating methods thereof are disclosed herein. In one example, a headphone includes a speaker, an internal microphone, and a processor. The speaker is configured to play an audio of interest based on an audio source signal. The internal microphone is configured to obtain a mixed audio signal including a noise signal and the audio of interest played by the speaker. The processor is configured to determine a first current system parameter of the headphone at a first time point, and determine if the first current system parameter of the headphone is higher than a predetermined threshold to determine if the headphone is worn by a user.

In certain aspects, a device for wireless transmission includes a transmission path, a feedback path, and a DPD control module. The transmission path includes a digital pre-distortion (DPD) conversion module configured to perform pre-distortion processing on an amplitude and a phase of a transmission signal based on a pre-distortion processing strategy. The transmission path further includes a power amplifier coupled to a downstream of the DPD conversion module and configured to amplify a power of the transmission signal. The feedback path is coupled to the transmission path at the downstream of the power amplifier and configured to generate a feedback signal. The DPD control module is coupled to the feedback path and the DPD conversion module and configured to adjust the pre-distortion processing strategy based on an amplitude difference and a phase difference between the transmission signal and the feedback signal.

Embodiments of active noise control (ANC) headphones and operating methods thereof are disclosed herein. In one example, a headphone for ANC includes a speaker, an internal microphone, a processor, and a filter function module. The speaker is configured to play an audio based on a first audio source signal. The internal microphone is configured to obtain a mixed audio signal comprising a noise signal and a second audio source signal based on the audio of interest played by the speaker. The processor is configured to determine a current system parameter of the ANC headphone based on the mixed audio signal at a first time point and determine a current parameter of a filter function module based on the current system parameter of the ANC headphone and pre-tested data. The filter function module is to perform ANC based on the determined current parameter of the filter function module.

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, wireless transceiver includes a first antenna, a second antenna, and a radio frequency (RF) module. The first antenna and second antenna are configured to establish communication links with an audio source and another wireless transceiver. The RF module is configured to receive audio information from the audio source based on a first communication link using the first antenna and the second antenna and receive audio play information from the another wireless transceiver based on a second communication link using the first antenna and the second antenna. A data transmission proportion of the first communication link allocated between the first antenna and the second antenna is dynamically adjusted based on qualities of data communicated by the first antenna and the second antenna through the first transmission link. A data transmission proportion of the second communication link allocated between the first antenna and the second antenna is dynamically adjusted based on qualities of data communicated by the first antenna and the second antenna through the second transmission link.

Wireless audio system and method for wirelessly communicating audio information using the same

Embodiments of wireless audio systems and methods for wirelessly communicating audio information are disclosed herein. In one example, a wireless audio system includes a first wireless headphone and a second wireless headphone. The first wireless headphone is configured to receive, from an audio source, audio information using a first type of short-range wireless communication; and in response to successfully receiving the audio information from the audio source, transmit an audio information message including the audio information using a second type of short-range wireless communication different from the first type of short-range wireless communication. The second wireless headphone is configured to receive, from the audio source, the audio information using the first type of short-range wireless communication; receive, from the first wireless headphone, the audio information message using the second type of short-range wireless communication; and in response to at least one of (i) successfully receiving the audio information from the audio source and the first wireless headphone successfully receiving the audio information from the audio source, or (ii) successfully receiving the audio information message from the first wireless headphone, transmit an acknowledgement message to the audio source.

Embodiments of wireless audio systems and methods for wirelessly communicating audio are disclosed herein. In one example, a method for generating a 3D audio representation of an audio is disclosed. The method includes collecting, by a first wireless headphone, a first audio signal of the audio and generating, by the first wireless headphone, a first synchronizing signal based on a local clock of the first wireless headphone. The method also includes collecting, by a second wireless headphone, a second audio signal of the audio and generating, by the second wireless headphone, a second synchronizing signal based on a local clock of the second wireless headphone. The method yet includes generating, by a user equipment, the 3D audio representation of the audio based on the first and the second audio signals and the first and the second synchronizing signals.

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Shanghai, China

Weifeng Tong