ブラウンノイズ ジェネレーター

最も深いノイズ。ブラウンノイズはオクターブごとに6dBずつ下がり、エネルギーのほぼすべてが低域に集まります。遠くの滝、飛行機のゴーという響き、強い風のような音。シャー音のない低音です。ホワイトノイズがきついと感じる人の一番人気。

ブラウンノイズ
音量50%

ブラウンノイズとは?

ブラウンノイズ(レッドノイズとも)は、オクターブごとにパワーが6dB下がる信号です。ピンクの2倍の傾きです。名前の由来は色ではなくブラウン運動。数学的にはその音の軌跡、つまりホワイトノイズの積分です。

聴感上はほぼすべてが低域に集中します。ゴロゴロという響き、遠雷のような音。高域が極端に少ないためシャー音がほぼなく、だからこそ、しっかりした音量でも何時間でも聴きやすいのです。

睡眠と作業のための深い背景音

ブラウンノイズはADHDの人々の間で一種の現象になりました。低く一定の響きが頭の中の雑音を「消し」、集中できるようになるという体験談が無数にあります。厳密な臨床研究はまだ少ないため、リスクゼロの無料実験と考えてください。多くの人がそのまま定着しています。

話し声のマスキングにはホワイトより弱めです。声の周波数帯のエネルギーが少ないからです。会話を消したいならホワイトかピンクから、柔らかく包み込む背景音が欲しいならブラウン一択。注意:ノートPCのスピーカーでは低域がほとんど再生されません。ヘッドホンかまともなスピーカーで聴いてください。

ブラウンノイズについてよくある質問

ホワイトやピンクとの違いは?

スペクトルの傾きです。ホワイト=オクターブあたり0dB(明るい)、ピンク=−3dB(バランス)、ブラウン=−6dB(深く暗い)。傾きが急なほどシャー音が減り、低音が増えます。

ADHDに効きますか?

体験談は非常に多く、一貫して好意的ですが、ブラウンノイズに特化した対照研究はまだ不足しています。メカニズムは妥当です:一定の背景音が刺激探索を抑え、気を散らす音をマスクする。無料でリスクもないので、自分で試すのが一番です。

ノートPCでほとんど聞こえないのはなぜ?

主なエネルギーが200Hz以下にあり、小さなスピーカーは物理的にその周波数を再生できないからです。聞こえるのは高域のわずかな残りだけ。ヘッドホンか本格的なスピーカーで初めて全貌が現れます。

一晩中流して大丈夫?

適度な音量なら安全です。ルールは他の背景音と同じ:必要最小限の音量で、快適さを最優先に。深い背景音のおかげで突然の物音で目が覚めにくくなる人も多くいます。

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