Terminal and audio processing method

Abstract

The invention provides a terminal which comprises a first application control module, a second application control module, an audio service control module, a hardware abstraction layer control module and a sound card control module, wherein the second application control module is used for sending a first audio data stream generated by a first application to a hardware abstraction layer; the second application control module is used for sending a second audio data stream generated by a second application to an audio service; the audio service control module is used for processing the second audio data stream through the audio service and sending the second audio data stream to the hardware abstraction layer; the hardware abstraction layer control module is used for simultaneously receiving the first audio data stream and the processed second audio data stream at the hardware abstraction layer, and sending the first audio data stream and the second audio data stream to a sound card; and the sound card control module is used for mixing the first audio data stream with the second audio data stream through the sound card and outputting the mixed audio data streams for playing. Accordingly, the invention also provides an audio processing method. According to the technical scheme provided by the invention, the audio data stream from a VOIP (voice over Internet Protocol) and / or a VOLTE (voice over LTE (long term evolution)) and the audio data stream from a player can be mixed and played, and the requirements of low latency of the traditional voice call can be met.

Description

technical field [0001] The present invention relates to the technical field of audio processing, and in particular, to a terminal and an audio processing method. Background technique [0002] With the development of mobile networks, voice calls through mobile networks have become more and more common, such as the more common VOIP (voice over internet protocal, voice data calls through the network) and VOLTE (voice over LTE, voice over LTE mobile network for calls). [0003] For the more popular android system platform on the mobile terminal, in order to realize the normal sounding of VOIP / VOLTE applications and conflict with other types of sounds, a solution of the prior art is as follows: [0004] Option 1, such as figure 1 As shown, use Audioflinger (an android audio service that realizes concurrency of sounds through mixing and resampling) to play sounds, and the VOIP / VOLTE application is equivalent to a player. This program is simple and easy to combine with other sou...

AI Technical Summary

Problems solved by technology

But its defect is that Audioflinger is used instead of direct output (a sub-thread in the Audioflinger audio service, bypassing mixing and reusing, and directly writing the audio data stream to the HAL (hardware abstract layer, hardware abstraction layer) layer for Play) mode, after resampling and mixing, the call delay will increase by about 50ms

The delay time of traditional voice calls must be less than 170ms. At present, the delay of VOIP / VOLTE is generally more than 200ms, which cannot meet the low delay requirements of traditional voice calls.

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