孩子哭鬧難以安撫? 本田技研新研究幫你 - Honda

By Frederic
at 2018-12-22T09:35
at 2018-12-22T09:35
Table of Contents
推 Ho1liday: 不就是白噪音?還以為發現新大陸12/21 23:30
不懂就不要推文亂誤導別人了.....
這絕對不是白噪音啊
隨便抓個網路上白噪音的圖
https://i.imgur.com/vLMrjUw.jpg
頻譜上每個頻率分布的能量幾乎一致,所以才叫White Noise
好歹也說是Pink Noise比較像一點點(雖然引擎聲音有階次也不是)
https://i.imgur.com/0grLG1h.jpg
用上一篇hondasho的截圖
https://i.imgur.com/8S9qqiZ.jpg
該顆引擎發出的聲音,能量集中在低頻
而且因為是活塞往復運動造成的聲音,能量也集中在階次上
可以觀察前三個波峰剛好是110 Hz、220 Hz、330 Hz,呈現倍數關係
這些聲音的整數階次相當突出
而第二波峰第三波峰中間有個約260~280 Hz的小波峰
推測是半整數階次
聲音整數階次多、半整數階次少,人耳相對就會覺得較和諧
※ 引述《hugh509 ((0_ 0))》之銘言:
: https://youtu.be/IJBvV1K3ays
: 低頻聲音能夠影響幼童的情緒,產生鎮定效果
: 便對幼兒做了一個小樣本實驗
: 實驗結果發現引擎聲也能夠安撫幼兒
: #不要再嫌本田隔音不好
: https://www.honda.co.jp/SOUNDSITTER/
--
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