タッチで操作するストップウォッチだと、タッチパネルの反応の遅れなどで、思ったタイミングでスタート・ストップができないことがあると思います。
このアプリでは、マイクからの音を使うことで、思ったタイミングでのスタート・ストップができるようになっています。
また、時間を計測するときにはほとんどの場合、何か別の合図とともに計測をスタートすると思います（よーいどん、など）。タッチの操作では、合図とタイミングを合わせてタッチしなければいけませんが、このアプリでは、合図の声などをそのままスタートの操作に使うことができるので、ぴったりのタイミングで計測をスタートすることができます。
時間精度も非常に高く、表示は1/1000秒までで、±2/1000秒ぐらいの精度が出ていると思います（検証の様子は動画で）。
その他、ラップタイムなど基本的な機能は、一般的なストップウォッチと同様です。
・徒競走などでの正確な計測
ピストルなどのスタートの合図をそのまま計測のスタート操作に使うことができるので、正確な計測ができます。
・手が使えないときの計測
作業時間などを自分で計測するとき、手が使えないことはよくあります。声でスタート・ストップの操作ができるので、手を使わずに計測することができます。
※計測時は最初にAdjustボタンをタッチしてから、操作に使う音（拍手など）を何度か鳴らして、マイク感度を調整してください。 Instead of operating in touch, it is a stopwatch that can start and stop with the sound, such as clapping.
That's stopwatch to operate by touch, like a delay of reaction of the touch panel, I think that there may not be able to start and stop at the thought timing.
In this application, by using the sound from the microphone, it has become to be able to start and stop at the thought timing.
In addition, in the case of most of the time to measure the time, I think that to start the measurement with some other cues (yawing Don, etc.). In a touch of the operation, but you must touch the combined signal and the timing, with this app, it is possible to use, such as in the as it is the start of the operation voice cues, is possible to start the measurement with perfect timing I can do it.
Time accuracy is also very high, the display up to 1/1000 seconds, I think we have come up with accuracy of about ± 2/1000 seconds (state of the verification in the video).
Other basic functions, such as lap times, is similar to a general stopwatch.
- Footrace exact measurement in such
It is possible to use the signal of the start of such a pistol as it is to start operation of the measurement, you can accurate measurement.
And measurement of when the hand can not be used
When you measure, such as work time on your own, it is likely to not use your hands. Since it is the operation of the start-stop in the voice, it can be measured without the use of hand.
※ from Touch the Adjust button the time of measurement is in the first, sounded several times the sound (applause, etc.) to use for the operation, please adjust the microphone sensitivity.
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