基于双螺旋结构的声卡同步输入输出

Synchronous Input and Output of Sound Card Based on Double Helix Structure

为了提高在声卡应用中实现的录音、播放的同步性,采用回调函数里交叉调用录音、播放的操作,设计了一种新颖的回调递归逻辑链。该方法表现在录音、播放的两个时间线上,两条回调递归模式的逻辑循环构成了美妙的双螺旋结构,这个结构恰似生命科学里经典的基因双螺旋模型。双螺旋结构的录音播放程序机制有更好的中和抖动的结果,比常规的录音播放调度模式易于获得更优的同步效果。方法可应用于需要多路音频信号同步的场合,如声学回声消除、声源定位和有源降噪等领域,以便获得更优的同步,从而助力于对应的音频算法的效果。

In order to improve the synchronization of recording and playing in sound card applications,a novel callback recursive logic chain was designed by cross calling the recording and playing operations in the callback function.The method was manifested in the two timelines of recording and playback,with two logical loops of callback recursive patterns forming a wonderful double helix structure,which was similar to the classic gene double helix model in life science.The dual helix structure of the recording and playback program mechanism has better results in neutralizing jitter,making it easier to achieve better synchronization compared to the conventional recording and playback scheduling mode.The method can be applied in situations where multiple audio signals need to be synchronized,such as acoustic echo cancellation,sound source localization,and active noise reduction,in order to achieve better synchronization and assist in the effectiveness of corresponding audio algorithms.