Shenzhen Bluetrum Technology Co., Ltd.

Jinhong Lin

Zhen Wang

Jingfa Liu

Zhangyi Yan

Hanping Wu

Zhuzhan Liu

Fanbo Kong

Minghui Song

Embodiments of the present application relate to a dual-microphone array echo cancellation method, device and electronic equipment, comprises: the acquired distal signal, the first proximal signal and the second proximal signal are processed by linear filtering; obtain initial suppression gain factors and variable step-size factors of the first near-end signal and the second near-end signal; performing residual echo suppression on the first error frequency spectrum and the second error frequency spectrum by using an adaptive zero-pole echo canceller to obtain a target frequency spectrum signal; performing sub-band range selection on the initial suppression gain factors to obtain a smooth factor, and performing full-band smoothing and exponential operation to obtain a secondary suppression gain factor; performing filtering processing on the target frequency spectrum signal by using the secondary suppression gain factor to obtain a target near-end voice signal.

Double-microphone array echo eliminating method, device and electronic equipment

A communication method for a wireless device, a wireless device and a computer readable storage medium are provided to reduce power consumption of a master device in the wireless device and balance power consumptions of the master device and a slave device. The communication method for a wireless device according to the embodiments of the present disclosure includes: alternately serving, by the master device and the slave device of the wireless device, as a responder, and sending, by the responder, a response message to the terminal via the first Bluetooth link. The response message indicates a result of receiving the Bluetooth data by the wireless device.

Communication method for wireless device, wireless device and computer readable storage medium

A method for reducing noise includes: obtaining a priori signal-to-noise ratio of air-bone integration, the priori signal-to-noise ratio of air-bone integration being obtained by integrating air conduction parameters of the current frame, bone conduction parameters of the current frame and air conduction noise parameters of the current frame; calculating a noise reduction gain according to the priori signal-to-noise ratio of air-bone integration; and performing noise reduction operation according to the noise reduction gain and the air conduction parameters of the current frame.

Method for reducing noise, storage medium, chip and electronic equipment

A method for reducing noise includes: obtaining an air conduction noise reduction parameter and a bone conduction noise reduction parameter, the air conduction noise reduction parameter being obtained by integrating an air conduction parameter of the current frame and an air conduction noise parameter of the current frame, and the bone conduction noise reduction parameter being obtained by integrating a bone conduction parameter of the current frame and a bone conduction noise parameter of the current frame; calculating a priori signal-to-noise ratio of air-bone integration according to the bone conduction parameter of the current frame and the air conduction noise parameter of the current frame; and performing noise reduction operation according to the priori signal-to-noise ratio of air-bone integration, the air conduction noise reduction parameter and the bone conduction noise reduction parameter.

A method and a system for generating and transmitting a BLE advertising packet through Classic Bluetooth are provided. By modifying the modulation characteristics and packet generation characteristics of Classic Bluetooth, the BLE advertising packet is carried by a Classic Bluetooth packet, the minimum frequency deviation for Classic Bluetooth is modified, and transmission phases of the Access Code and the Header in the Classic Bluetooth packet are skipped when transmitting the Classic Bluetooth packet, such that the BLE advertising packet can be transmitted through Classic Bluetooth, thereby implementing a Bluetooth beacon function.

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Guangdong, China

Jinhong Lin