low latency audio: measurement
PUBLIC终于有时间做一个测试,回答长久以来(见low latency audio)很有疑问的一个问题。
我们常用的语音通话服务的延迟究竟是多少。
测试手段
同样的网络环境中,两台设备分别在麦克风/扬声器附近放一个麦克风。 两个麦克风分别作为左右声道接入声卡录音。
测试结果
lltalk
![](../../ox-hugo/2024-07-20_11-56-44_screenshot_hu5350472437560397132.webp)
\[2.173-2.145=0.028s\]
微信语音
![](../../ox-hugo/2024-07-20_11-53-29_screenshot_hu12894687724418228753.webp)
\[1.571-0.047=0.524s\]
腾讯会议
![](../../ox-hugo/2024-07-20_11-55-01_screenshot_hu13086775089655238400.webp)
\[1.563-1.173=0.390s\]
电话,联通-电信
![](../../ox-hugo/2024-07-20_11-55-45_screenshot_hu14499301010302630789.webp)
\[1.652-1.329=0.321s\]
Lark
![](../../ox-hugo/2024-07-20_13-18-02_screenshot_hu390499087773618534.webp)
\[2.561-2.253=0.308s\]
Lark wired
![](../../ox-hugo/2024-09-13_18-09-04_screenshot_hu4834260972384901290.webp)
\[6.458-6.180=0.278s\]
VDO.ninja WebRTC
![](../../ox-hugo/2024-09-24_21-39-20_screenshot_hu3018604945676221331.webp)
\[3.643-3.350 =0.293\]
Mumble
![](../../ox-hugo/2024-07-21_14-54-28_screenshot_hu8188981466808917746.webp)
\[2.351-1.618=0.733s\]