Method and system for non-intermittence software switch of audio data flow input/output

Abstract

The invention discloses a method and a system for audio frequency data stream input / output software switching without a break in operation system, wherein, the operation system consists of a local physical audio card, a short distance wireless communication module and an audio frequency switching module. When the short distance wireless communication module sets up wireless audio frequency transferring channel, the audio frequency switching module outputs the audio frequency data stream output by the audio frequency application routine to wireless audio frequency device via the wireless audio frequency transferring channel, and inputs the audio frequency data stream input by the wireless audio frequency device to the audio frequency application routine via the wireless audio frequency transferring channel, when the short distance wireless communication module cut the wireless audio frequency transferring channel, the audio frequency switching module automatically outputs the audio frequency data stream output by the audio frequency application routine to the wire audio frequency device via local physical audio card, and inputs the audio frequency data stream input by the wire audio frequency device to the audio frequency application routine via the local physical audio card.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method, device and system for uninterrupted software switching of audio data stream input / output in an operating system. Background technique [0002] The emergence of wireless technologies (such as Bluetooth technology, Wi-Fi technology, UWB technology, etc.) enables users to listen to music and make calls wirelessly. Its implementation is usually to have a wireless transceiver in the audio output device (such as computer, PDA, mobile phone, etc.) and audio receiving device (headphone, speaker, cordless phone, etc.), and the audio data stream of the audio output device is transmitted through wireless To the client's audio receiving device. [0003] Taking Bluetooth technology as an example, in terms of Bluetooth audio applications, it provides SCO / eSCO links to transmit real-time voice signals with low sampling frequency, which is convenient for users to use handheld devic...

AI Technical Summary

Problems solved by technology

[0005] At present, usually users can start to listen to music or make calls such as Skype and MSN through wired audio devices, and then switch to using Bluetooth audio devices (Bluetooth headsets and Bluetooth headsets). The default input sound card and default output sound card of the input / output audio data stream in the operating system are switched from the local physical sound card to the Bluetooth virtual sound card, and a few audio applications (such as Skype) provide interfaces, so that the Bluetooth application can send related The command informs the audio application program that the default sound card has been set as the Bluetooth virtual sound card, and the audio application program can recognize and automatically input / output the audio data stream from the Bluetooth virtual sound card, but if the current audio application program wants to complete the switch, the audio application program You must close the currently open local physical sound card, interrupt the current audio application, and then re-open the system default sound card, that is, the Bluetooth virtual sound card, or even restart the audio application to complete the switch. The audio application is interrupted, and the user experience is very bad.

[0006] The same problem, if the user uses the Bluetooth audio device to listen to music or make a phone call at the beginning, but when the Bluetooth audio transmission channel is disconnected or the Bluetooth audio device is out of power, the user wants to use the wired audio device to answer and / or input Audio data flow, at this time, although the Bluetooth application program can automatically switch the default input sound card and default output sound card of the input / output audio data stream in the operating system from the Bluetooth virtual sound card to the local physical sound card, but the current audio application program needs to To complete the switch, the audio application must close the currently open Bluetooth virtual sound card, interrupt the current audio application, and then reopen the system default sound card, that is, the local physical sound card, or even restart the audio application to complete the switch, and the audio application is interrupted

[0007] It can be seen that the audio data stream input / output by the audio application program cannot be continuously switched between the Bluetooth audio transmission channel and the local physical sound card. In occasions where audio data stream input / output requires high real-time performance, such as making Skype calls, watching online videos, playing games, etc., restarting the audio application program will result in the inability to continue the original use scenario, which is inconvenient for users

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