Bluetooth speaker and its control method, system and storage medium

Abstract

The invention discloses a bluetooth speaker, a control method, a system and a storage medium thereof. Wherein, the control method includes: establishing a first protocol connection and a second protocol connection between the Bluetooth speaker and the mobile terminal; acquiring voice data collected through the Bluetooth speaker, and compressing the collected voice data according to a pre-negotiated compression factor; Send the compressed voice data to the mobile terminal through the first protocol connection, wherein the mobile terminal decompresses the received voice data, and sends the decompressed voice data to the server for voice recognition to obtain the recognized Audio data: receiving the audio data returned by the mobile terminal based on the second protocol connection, and controlling the audio output module in the Bluetooth speaker to play the audio data. The method adopts the Bluetooth two-way high-speed transmission protocol to realize the two-way high-speed voice data transmission function between the Bluetooth speaker and the mobile terminal, which can greatly improve the far-field voice interaction experience of the Bluetooth speaker.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a bluetooth speaker, its control method, system and computer-readable storage medium. Background technique [0002] In related technologies, existing Bluetooth speakers usually use standard Bluetooth 4.2 and BLE (Bluetooh Low Energy, Bluetooth low energy) technology for two-way communication. In the normal playback mode, most of them use the A2DP (Advanced Audio Distribution Profile, Bluetooth Audio Transmission Model Protocol) protocol for audio playback. At this time, the uplink can only use BLE to transmit data. In order to ensure the stability of Bluetooth playback, the BLE transmission rate is usually limited to 16kbps (where kbps is also called the bit rate, which refers to the transmission rate of digital signals). In the call state, most of them use the HFP (Hands-freeProfile, Bluetooth hands-free application protocol) protocol for communication, and the uplink an...

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Problems solved by technology

[0003] However, the current problem is that since the total average data transmission bandwidth of the uplink and downlink is fixed, if the quality of downlink audio playback is guaranteed (that is, the downlink transmission rate is increased), the delay of voice interaction from wake-up to recognition will become longer. More than 2 seconds will affect the user experience; if the response speed of the voice interaction from wake-up to recognition is guaranteed so that the user is not aware (that is, the uplink transmission rate is increased), the quality of downlink audio playback needs to be greatly reduced; in addition, the HFP protocol is used to realize Bluetooth two-way During transmission, since the HFP protocol only supports the transmission of call data, and the uplink and downlink transmission rates are only 16kbps, it cannot meet the real-time requirements of voice interaction and will affect the quality of downlink content playback

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