スピーカーの水を出す音

雨や水しぶき、水泳のあとスピーカーがこもって聞こえますか?Apple Watchと同じ方式の165Hzパルス音を再生して、スピーカー内部の水を物理的に押し出しましょう。音量を最大にし、スピーカーを下に向けて、ボタンを押すだけ。

165 Hz

30秒のパルス排水トーン

開始前に: 端末の音量を最大にし、ケースを外し、スピーカーを下に向けて持ってください。重力が水滴の排出を助けます。

スピーカーから水を出す手順

  1. まず外側を拭く。 端末を拭き、スピーカーを下に向けて軽く振り、表面の水を落とします。
  2. 音量最大、ケースなし。 トーンにはできるだけ多くの空気を動かしてもらう必要があります。
  3. スピーカーを下に向けて 「水を出す」を押します。細かい水滴がグリルから出るのが見えるか感じられるはずです。
  4. 拭いて繰り返す。 音楽がクリアに聞こえるまで2〜5回。
  5. 自然乾燥で仕上げる。 充電の前に1時間ほど。スピーカーがきれいでも、端子は乾いている必要があります。

なぜ165Hz?

スピーカーの振動板は低い周波数ほど大きく動きますが、スマホや時計の小さなスピーカーは極端に低い音を大きく鳴らせません。約165Hzはその妥協点です。水を押し出す大きな振幅を得られるほど低く、10mmのスピーカーでも大音量で再生できるほど高い。AppleがApple WatchのWater Lock排水音に選んだのがまさにこの周波数で、パルス(脈動)が水滴を保持する表面張力を破るのを助けます。

実験したい、または排水後にスピーカーを確認したい場合はこちら: Tone Generator · Balance Test · Sweep Generator

よくある質問

排水音はどういう仕組みですか?

スピーカーは空気を動かす振動板です。強い低音を再生すると振動板が激しく動き、水滴を物理的にスピーカー内部から押し出します。Apple WatchのWater Lock機能が約165Hzのトーンで行っているのと同じ技です。スマホ・時計・タブレット・ノートPCなど、トーンを再生できるスピーカーを持つ端末なら何でも使えます。

水を出すのに最適な周波数は?

約165Hzが、Apple Watchや多くの排水ツールが使うスイートスポットです。振動板が大きく動くほど低く、小さなスピーカーでも力強く再生できるほど高い周波数。このツールは1回につき30秒、165Hzのパルス正弦波を再生します。

何回実行すればいいですか?

2〜5回が目安です。実行のあいだに出てきた水滴を拭き取り、スピーカーは下向きのまま。音楽がクリアに鳴ったら終了です。数回実行して1時間乾かしてもこもるなら、水分はスピーカーより奥にある可能性があります。

この音でスピーカーが壊れませんか?

壊れません。スピーカーが普通に再生できる範囲のごく通常のオーディオ信号です。内部で乾いて接点を腐食させたりミネラルを残したりする水そのもののほうが、はるかに有害です。すぐに排水することは保護であって、リスクではありません。

スマホが完全に水没しました。これで十分?

このツールが対処できるのはスピーカー内部だけです。水没した場合:電源を切り、完全に乾くまで充電しない(端子内の液体+電流=腐食)、拭き取って端子を下に数時間自然乾燥。米は不要です。研究では空気乾燥より速くならず、ほこりが入るだけと示されています。乾燥後にこのトーンでスピーカーを仕上げてください。

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