vault backup: 2023-12-12 17:49:59
This commit is contained in:
28
.obsidian/workspace.json
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28
.obsidian/workspace.json
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@@ -53,7 +53,7 @@
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"file": "00. Inbox/SSIM.md",
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@@ -126,7 +126,7 @@
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@@ -151,7 +151,7 @@
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"file": "00. Inbox/SSIM.md"
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@@ -179,7 +179,7 @@
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"file": "00. Inbox/SSIM.md"
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@@ -224,8 +224,16 @@
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"00. Inbox/SSIM.md",
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"06. Archives(歸檔)/想要的鏡頭/變焦/Fujifilm XF 16-80mm F4 R OIS WR.md",
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@@ -238,7 +246,6 @@
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@@ -265,7 +265,7 @@
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"05. 資料收集/Tool Setup/Software/diskstation",
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9
00. Inbox/Brown noise.md
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9
00. Inbox/Brown noise.md
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- [布朗噪音(「棕色噪音」)和白噪音有何卻別?為什麼可能幫助多動症者? - BBC News 中文](https://www.bbc.com/zhongwen/trad/science-63342282)
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布朗噪聲(也稱布朗噪音、棕色噪音、紅色噪音或隨機移動噪音,brown noise),相對於其「表親」白噪音([[White noise]]),布朗噪音相對鮮為人知,而且對其研究也比較少。據說這種聲音可以幫助集中精力,有助睡眠,甚至可以幫助那些患有神經多樣性病症,例如注意力缺陷多動症(俗稱多動症,ADHD)的人自我調節。
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但英文brown noise中的「brown」在這裏並不是指棕色(雖然後來也有人把它稱為棕色噪聲),而是指布朗運動(Brownian motion)。幾乎在200年前的1827年,植物學家羅伯特·布朗(Robert Brown)首次發現花粉在水中做(不規則)運動。
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後來證實其他微細顆粒如灰塵也有同樣的現象,雖然他並沒有能從理論上解釋這種現象,但後來的科學家用他的名字命名為布朗運動,因為該聲音信號的圖形表現跟布朗模式一摸一樣,故此得名。
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布朗噪音有時也被稱為紅噪音,其來源於光的類比,紅光比白光有更多低頻波譜,就像布朗噪音比白爆音具有更多低頻波一樣。
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2
00. Inbox/SSIM.md
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2
00. Inbox/SSIM.md
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- [結構相似性 - 維基百科,自由的百科全書](https://zh.wikipedia.org/zh-tw/%E7%B5%90%E6%A7%8B%E7%9B%B8%E4%BC%BC%E6%80%A7)
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3
00. Inbox/White noise.md
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3
00. Inbox/White noise.md
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白噪音,是指一種功率譜密度為常數的隨機信號。這種信號在各個頻段上的功率譜密度是一樣的,由於白光是由各種頻率(顏色)的單色光混合而成,故叫白噪音,它類似於廢棄無線電或電視台的靜電聲音,由於同時發出均勻聲頻,人耳可以察覺到。
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也就是什麼頻率都有聲音,全部混合在一起。
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@@ -1 +0,0 @@
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{}
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@@ -1 +0,0 @@
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{}
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