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Your device's sound delay is allowed for. No sign-up.","2026-10-06","Audio reaction test",{"instruction":162,"note":165,"picture":166,"resultLabel":169},{"touch":163,"mouse":164},"Turn your sound on. Tap the moment you hear the beep.","Turn your sound on. Click, or press the space bar, the moment you hear the beep.","Browsers keep sound off until you press something: Start is that press. 5 tries, about one minute.",{"kind":167,"name":168},"drawing","sound-speaker","Your reaction to sound",{"heading":171,"blocks":172},"How we measured this",[173,184],{"type":174,"text":175},"paragraph",[176,179,182],{"t":177,"v":178},"text","Your result is the middle time of your ",{"t":180,"v":181},"num","5",{"t":177,"v":183}," tries: as many tries were quicker as were slower. That way one lucky press or one slow moment does not change it much. The middle time is also called the median.",{"type":185,"items":186},"list",[187,190,193,200,207],[188],{"t":177,"v":189},"The first try is for practice and does not count.",[191],{"t":177,"v":192},"Each time starts from the moment the beep could be heard, not from the moment the page asked for it. A beep takes a little time to travel through your device to the speaker, and the page works that time out and allows for it.",[194,196,198],{"t":177,"v":195},"A press before the beep is too early. That try does not count and you do it again. So is a time under ",{"t":180,"v":197},"100",{"t":177,"v":199}," ms, which is too quick to be a real reaction.",[201,203,205],{"t":177,"v":202},"A try slower than ",{"t":180,"v":204},"1",{"t":177,"v":206}," sec does not count, because something else must have held you up.",[208],{"t":177,"v":209},"If the page goes into the background during a try, that try does not count and you do it again.",1,{"mouse":14,"touch":14,"keyboard":14},{"wait":213,"time":214,"falseStart":215,"anticipation":216,"lapse":217,"paused":218,"frameGap":219,"goOn":220,"arena":221,"options":245,"result":252,"flags":311},"Listen for the beep.","{ms|ms}","Too early. You get that try again.","Too quick to be a reaction. You get that try again.","{ms|ms} is too slow to count.","That try did not count: you looked away. Press to go on.","The screen stalled, so that try did not count. Press to go on.","Press to go on.",{"label":222,"wait":225,"testBeep":226,"tonePlayed":227,"toneSilent":228,"noSound":229,"noSoundLink":230,"tooQuick":231,"earlyNext":232,"slowNext":235,"stalled":238,"preciseNote":241},{"touch":223,"mouse":224},"Test area. Listen for a beep and tap when you hear it.","Test area. Listen for a beep and click or press Space when you hear it.","Listen for the beep","Play a test beep","A beep was played. If you did not hear it, turn your sound up and play it again.","No beep could be played. Check that your sound is on and not muted, then try again.","This browser cannot play sound, so this test cannot run here. The reaction time test needs no sound:","open the reaction time test","Too quick to count",{"touch":233,"mouse":234},"Wait for the beep. Tap to try again.","Wait for the beep. Click or press Space to try again.",{"touch":236,"mouse":237},"That try is used up. Tap to go on.","That try is used up. Click or press Space to go on.",{"touch":239,"mouse":240},"The screen stalled. Tap to try again.","The screen stalled. Click or press Space to try again.",{"plural":242,"one":243,"other":244},"count","{count|int} try. It takes about four minutes.","{count|int} tries. It takes about four minutes.",{"legend":246,"count":247,"normalNote":250,"preciseNote":251},"How many tries?",{"plural":242,"one":248,"other":249},"{count|int} try","{count|int} tries","About one minute","More exact. About four minutes",{"label":169,"unit":253,"unitSpoken":254,"valueSpoken":255,"quicker":256,"slower":257,"best":258,"bestSpoken":259,"say":260,"basis":268,"earlyTries":271,"yourBest":274,"details":275},"ms","milliseconds","{ms|int} milliseconds","Quicker","Slower","Your earlier best {ms|ms}","Your best earlier result was {ms|int} milliseconds.",{"markers":261,"notCompared":266,"history":267},{"range":262,"above":263,"about":264,"below":265},"In a small study of {people|int} people reacting to a sound, most took {low|int} to {high|ms}. You took {you|ms}.","In a small study of {people|int} people reacting to a sound on a laptop, the average was {value|ms}. You took {you|ms}: slower than that.","In a small study of {people|int} people reacting to a sound on a laptop, the average was {value|ms}. You took {you|ms}: about the same.","In a small study of {people|int} people reacting to a sound on a laptop, the average was {value|ms}. You took {you|ms}: quicker than that.","We did not compare this one: too few of your tries counted.","We only show your own results for this one.",{"plural":242,"one":269,"other":270},"From your only valid try.","The middle of your {count|int} valid tries.",{"plural":242,"one":272,"other":273},"One try started too early and was done again.","{count|int} tries started too early and were done again.","Your best result in this browser: {ms|ms}.",{"tries":276,"try":279,"early":280,"quick":281,"slow":282,"away":283,"stalled":284,"compare":285,"historyWhy":286,"notComparedWhy":287,"legend":288,"device":291,"referenceWhy":308,"referenceLabel":309,"source":310},{"plural":242,"one":277,"other":278},"Your try","Your {count|int} tries","Try {n|int}","Too early: done again","Too quick to count: done again","Too slow to count","Did not count: you looked away","Did not count: the screen stalled","What we compare you with","No published figure fits this run, so it is only set beside your own earlier results: the short orange ticks.","A result needs more tries that counted before it is set beside anything. This one is saved, and you can try again.",{"you":289,"history":290},"{ms|ms} is your result.","The short orange ticks are your earlier results in this browser.",{"heading":292,"used":293,"input":294,"sound":299,"soundCorrected":300,"soundUnknown":301,"screen":302,"screenValue":303,"screenUnknown":304,"timing":305,"timingEvent":306,"timingHandler":307},"Your device","You used",{"touch":295,"mouse":296,"keyboard":297,"pen":298},"A touch screen","A mouse","A keyboard","A pen","Sound delay","Your browser said that a beep takes {ms|ms} to reach the speaker. That time was taken off every try, so each time runs from the moment the beep could be heard.","Your browser did not say how long a beep takes to reach the speaker, so your times include that delay and run a little long.","Your screen","Shows {hz|int} pictures a second ({hz|int} Hz). Each one stays for about {ms|ms}.","Not measured yet.","Timing","From the browser's own record of each press.","From the moment the page read each press, which can be a little later than the press.","A small study timed {people|int} people reacting to a sound on a laptop: their average was {ms|ms}. With so few people the figure is a mark to look at, not a ranking. Speakers and keys add their own delay, there as here. Your own earlier results are the short orange ticks.","Study average","Source",{"false-start":312,"anticipation":313,"lapse":314,"hidden":315,"frame-gap":316,"dropped-frames":317,"aborted":318,"unfinished":319,"too-few-trials":320,"latency-unknown":321,"untrusted":322,"key-repeat":323,"uniform":324,"implausible-rate":325,"assisted":326,"low-accuracy":327,"paste-refused":328,"skimmed":329,"low-comprehension":330,"straightlining":331,"too-fast":332,"too-many-skipped":333,"prorated":334,"not-enough-answers":335,"ceiling":336,"too-many-voids":337,"frame-limited":338,"frame-unknown":339,"lower-bound":340},"You pressed before the beep: those tries were done again.","Some presses were too quick to be reactions: those tries were done again.","Some tries were too slow to count.","The page went into the background: that part was not counted.","The screen stalled for a moment: that try was done again.","The screen was slow to change on some tries: those times may be a little short.","Stopped before the end.","Not finished.","Too few tries counted to give a result.","The browser did not say how long its sound takes to play, so the times include an unknown delay.","Some presses did not come from your own touch, click or key and were ignored (a script or another program).","A held key repeated by itself: the repeats were ignored.","The presses came at evenly spaced intervals, like a machine's: the result is kept but not compared.","Faster than one finger can tap: runs with several fingers are kept but not compared.","Your keyboard corrected or predicted some words for you, so this run is not compared.","Too few answers were right to compare this run.","Pasted text was left out: only what you typed counts.","The text was on screen too briefly to have been read, so the reading speed is not compared.","Too few questions about the text were answered right, so the reading speed is not compared.","Many answers in a row were the same, also where statements point in opposite directions: the result is shown but not compared.","You answered very quickly, in under a second per statement on average, so this result is not compared with others.","Too many statements were left out to give a result.","Some statements were left out: their scales were completed from your other answers.","A scale has too few answers for a result.","You reached the end of the test, so your true result may be higher.","Too many tries were not counted (the page was in the background or the screen stalled).","The browser reports the mouse once per screen frame, so this is the screen's rate, not the mouse's.","The screen's frame rate is unknown, so it cannot be told whether this is the mouse's rate.","Many reports arrived together: the mouse reports at least this often.",1791315148590]