Synchronous recording and playing system and method of audio frequency on the basis of Android system

An audio synchronization and audio technology, applied in the field of communication, can solve problems such as high delay, and achieve the effect of reducing delay

Active Publication Date: 2017-10-27
NANJING ZHONGXING SOFTWARE
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, embodiments of the present invention provide a system and method for synchronous recording and playback of audio based on the Android system, which solves the problem of high delay in the native audio system based on the Android system in the prior art

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  • Synchronous recording and playing system and method of audio frequency on the basis of Android system
  • Synchronous recording and playing system and method of audio frequency on the basis of Android system
  • Synchronous recording and playing system and method of audio frequency on the basis of Android system

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Embodiment Construction

[0037] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0038] Such as image 3 As shown, the embodiment of the present invention provides a kind of audio synchronous recording and playback system based on the Android system, including: the audio customization service subsystem 11 and the audio customization hardware abstraction subsystem 12 arranged in the application framework layer of the Android system, wherein, Both the audio customization service subsystem 11 and the audio customization hardwa...

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Abstract

The invention discloses a synchronous recording and playing system and method of an audio frequency on the basis of an Android system. The system comprises an audio frequency customization service subsystem and an audio frequency customization hardware abstraction subsystem, wherein the audio frequency customization service subsystem and the audio frequency customization hardware abstraction subsystem are both independent of the native audio frequency system of the Android system; the audio frequency customization hardware abstraction subsystem is used for calling the driving program of voice recording equipment at the bottom layer to record audio frequency data and calling the driving program of playback equipment at the bottom layer to play sound mixing data; and the audio frequency customization service subsystem is used for receiving a synchronous recording and playing command sent from an application module, controlling the audio frequency customization hardware abstraction subsystem to start the voice recording equipment and the playback equipment according to the synchronous recording and playing command, reading the audio frequency data recorded by the audio frequency customization hardware abstraction subsystem, and carrying out sound mixing processing to obtain the sound mixing data. By use of the system, when the audio frequency is synchronously recorded and played, time delay can be below 50ms, and the synchronous recording and playing requirements of the audio frequency are met.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an Android system-based audio synchronization recording and playback system and method. Background technique [0002] In the prior art, the synchronous recording and playback of audio in the Android system is realized on the basis of hardware mixing or digital signal processing (Digital Signal Processing, DSP for short). The shortcoming of the audio synchronization recording and playback delay developed on the Android platform is basically inherited from the congenital deficiency of the Linux system. The primary reason for audio delay comes from the underlying drivers. The Android system uses the Hardware Abstraction Layer (HAL) for application architecture and driver communication. The lowest-level audio compilation drivers are still based on the Linux kernel, and most of them use the advanced Linux sound in the Linux kernel. Architecture (Advanced Linux Sound Architectu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/44
CPCG06F9/4411G06F9/44
Inventor 金志涛
Owner NANJING ZHONGXING SOFTWARE
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