Baseline Widely available
currentTime
㯠BaseAudioContext
ã¤ã³ã¿ã¼ãã§ã¤ã¹ã®èªã¿åãå°ç¨ããããã£ã§ãåçãã¿ã¤ã ã©ã¤ã³ã®å¯è¦åãªã©ã®ã¹ã±ã¸ã¥ã¼ãªã³ã°ã§ä½¿ç¨ã§ããåç´å¢å ãããã¼ãã¦ã§ã¢æéã®ç§æ°ãå精度浮åå°æ°ç¹åã§è¿ãã¾ãã 0 ããå§ã¾ãã¾ãã
æµ®åå°æ°ç¹æ°ã§ãã
ä¾const audioCtx = new AudioContext();
// å¤ã webkit/blink ãã©ã¦ã¶ã¼ã§ã¯æ¥é è¾ãå¿
è¦ã§ã
// â¦
console.log(audioCtx.currentTime);
æå»ã®ç²¾åº¦ã®ç¸®å°
ã¿ã¤ãã³ã°æ»æããã£ã³ã¬ã¼ããªã³ãã«å¯¾ããä¿è·ãæä¾ããããã«ããã©ã¦ã¶ã¼ã®è¨å®ã«ãã£ã¦ã¯ audioCtx.currentTime
ã®å¤ã丸ãããããã¨ãããã¾ãã Firefox ã§ã¯ãç°å¢è¨å®ã® privacy.reduceTimerPrecision
ãæ¢å®ã§æå¹ã«ãªã£ã¦ããã Firefox 59 ã§ã¯ 20usã60 ã§ã¯ 2ms ã«ãªã£ã¦ãã¾ãã
// reduced time precision (2ms) in Firefox 60
audioCtx.currentTime;
// 23.404
// 24.192
// 25.514
// â¦
// reduced time precision with `privacy.resistFingerprinting` enabled
audioCtx.currentTime;
// 49.8
// 50.6
// 51.7
// â¦
Firefox ã§ã¯ã privacy.resistFingerprinting
ãæå¹ã«ããã¨ã精度㯠100ms ã¾ã㯠privacy.resistFingerprinting.reduceTimerPrecision.microseconds
ã®å¤ã®ã©ã¡ãã大ããã»ãã«ãªãã¾ãã
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