Hearecho

What Hearecho trains

Hearecho trains pitch recall: holding one tone in memory across a silence and rebuilding it once it has gone. Every other pitch game gives you something to compare against. This one deliberately takes it away. Between the tone and your answer there is nothing but a pause, so what you are working with is the memory trace itself: how faithfully it survives, and how well you can steer back to it once the sound has stopped.

How to play

Press Start and a tone sounds for about a second and a half. Then the display switches to a pause and the screen asks you to remember it. Nothing plays during the pause. When the reproduce phase opens, you get a slider and a Play my echo button: move the slider, listen to what you have set, adjust, and press Lock in echo when it matches the tone you are holding.

There are four rounds, and both the silence and the precision demanded grow as you go. The pause starts at two seconds and stretches to nearly four by the last round, while the margin you are allowed shrinks. The slider spans 300 cents either side of a hidden starting point and resets to the middle every round regardless of where the target sits, so its opening position carries no hint. You can audition your own echo as many times as you like before locking in.

How scoring works

Each round measures how far your reproduction lands from the target and scores it against that round's tolerance: exactly right is 100, a full tolerance out is 0, and everything in between is scaled in a straight line. The four rounds are averaged into your echo accuracy out of 100. A round at 85 or above counts as spot-on and moves on immediately; below that, the slider snaps to the correct pitch and the target tone is replayed so you can hear how far off you were. A final accuracy of 60 or more earns the day toward your streak.

What your score means

Read the accuracy as a rough band, not a verdict:

Recall is unusually sensitive to tiredness and distraction, so a bad day is often just a bad day.

Common mistakes

The classic error is sweeping the slider wildly at the start of the reproduce phase. Every tone you play sits in the same memory the target is in, so a long search actively erodes what you are searching for; move in halving steps and audition sparingly. Second, humming along during the pause feels helpful but replaces a heard pitch with a produced one, and your voice has its own bias. Third, filling the pause with other sound, such as a video in another tab or someone talking, which is far more disruptive to pitch memory than silence. Fourth, assuming the slider's starting position is close; it is not. Fifth, locking in the moment it sounds nearly right, when one more comparison would have caught the last few cents.

Practice progression

(5 min, beginner) play the daily four rounds in a quiet room and stay silent during the pause. (10 min, intermediate) use the practice tab, where the retention gap runs from one second up to four and the round count from two to eight; a four-second gap on the hard tier is a genuinely different task from the daily version. (weekly) pair it with Hearspan, which keeps a reference available and isolates the reproduction step, so you can see which of the two is actually limiting you.

The science behind it

Pitch memory is a specific, fragile store. A heard tone leaves a trace that decays over seconds, and unlike a word it cannot easily be rehearsed silently without changing it. The trace is also unusually vulnerable to interference from other tones: intervening sounds close in pitch degrade recall far more than an equally long silence does, which is the well-documented reason a busy search hurts. This is exactly what separates relative pitch from absolute pitch. Someone with absolute pitch can label the tone and recall the label, which survives a pause indefinitely; everyone else is holding the sound itself, and the sound fades. Training does not usually create a label, but it does slow the fade and sharpen the search. Our guides to tone-memory training and relative versus perfect pitch cover both sides.

Limitations

Hearecho is a game and an informal self-check, not a clinical or diagnostic tool. It measures recall over a few seconds with a slider, not long-term pitch memory and not singing accuracy. Browser audio and headphones vary between devices, so results are not strictly comparable, and four rounds on one day reflect concentration and fatigue as much as ability.

Where it shows up

Holding a pitch after it has stopped is one of those skills you only notice when it fails. A singer waiting through eight bars of rest has to come back in on the right note, with nothing sounding in between that helps. A choir given a starting note from a piano has to carry it through the conductor's preamble. A guitarist tuning by ear plays the reference string, then turns to the next one, and for those few seconds the reference exists only in memory, which is why tuning gets harder the longer you fiddle. Someone transcribing a melody replays a phrase, then has to hold the first note steady while working out what came after it. A player joining a session hears the key once and has to hold it while finding the instrument. Outside music, the same store lets you notice that a recurring alarm sounds different today, or that an engine is starting on a slightly lower note than it did last week. Both are comparisons across a gap, where nothing is available to check against except what you kept. Hearecho isolates that gap and makes it slightly longer each round.

Related reading & games

• Tone-memory training: how pitch recall fades and how to slow it.
• Relative versus perfect pitch and what pitch is.
• Hearspan and Hearmory: reproduction with a reference, and memory for several tones.
• All ear-training guides.