Audio latency tests in the Windows platform

To examine the audio performance possible in the latest Microsoft Windows platform and the factors that affect the audio latency, we analyzed the timing of sound play and recording in Windows 10 and 11. We developed software tools that played/recorded sounds via audio application programming interfaces (APIs) currently supported in Windows and measured the delay for the sounds to be generated/captured after the play command was issued. Multiple tests were performed for different computers, operating system versions, sound cards, sound drivers and APIs. The uploaded files include the audio latency measures (latency_data.mat) and MATLAB scripts for generating figures and tables based on the measures. For a detailed explanation of the uploaded files and data structure, please refer to the readme.txt and latency_data.m files.为探究最新微软（Microsoft）Windows平台可实现的音频性能，以及影响音频延迟的各类因素，本研究针对Windows 10与Windows 11系统中的音频播放与录制时序展开了分析。我们开发了基于Windows当前支持的音频应用程序编程接口（Application Programming Interfaces, APIs）实现音频播放与录制的软件工具，并对发出播放指令后，声音生成/捕获的延迟时长进行了测量。本研究针对不同配置的计算机、操作系统版本、声卡、音频驱动及API开展了多组测试。上传文件包含音频延迟测量数据（latency_data.mat）以及基于该数据生成图表与表格的MATLAB脚本。若需了解上传文件与数据结构的详细说明，请参阅readme.txt与latency_data.m文件。