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随着个人多媒体计算机性能的飞速提高，人们逐渐开始利用个人计算机进行数字音频的实时处理。用户对声卡采集到的原始音频信号进行一定处理后，将数字音频信号送到声卡重放。音频信号的采集（录音）和重放同时进行。双缓冲区技术在这个实时处理过程中起着十分重要的作用。文中详细讨论了双缓冲区技术在数字音频实时处理中的原理和实现方法。
With the rapid increase in the performance of personal multimedia computers, people are beginning to use personal computers to perform real-time digital audio processing. After the user processes the original audio signal collected by the sound card, the digital audio signal is sent to the sound card for replay. Audio signal acquisition (recording) and playback simultaneously. Double-buffering technology plays a very important role in this real-time process. In this paper, the principle and implementation of double-buffer technology in real-time digital audio processing are discussed in detail.