關於iphone7 plus的電流聲 - iOS

前天剛買iphone 7 plus玫瑰金，第一次看到這消息也抖抖的
想說我是不是中標了，查了一些資訊，這應該是叫做coil whine


目前看到這個網站的文章有做過比較多的比較測試，給大家參考看看

http://www.imore.com/no-hiss-buzz-not-unique-not-iphone-7-problem


No, hisses and buzzes aren't unique to iPhone 7 and aren't a problem

不!!這種滋滋聲不是iphone 7才有的，而且這不是一個問題。

First, it was iPhone 7 Home buttons and capacitive gloves, now it's iPhone 7
making a "hiss" or "buzz" sound. Every year, the tidal wave that is iPhone
launch attention sweeps up all sorts of "gates" in its wake, and it can be
difficult and confusing to sort the real from the imagined.

首先，是"iphone 7 的Home鍵與電容觸控手套 (可參考原連結另外一篇文章)"，現在
是iphone 7會發出滋滋雜音，每年新iphone發表總會有各類"門"的話題產生
會讓人搞不清楚哪些是真的問題那些是想像出來的。


We've now spent almost a day testing both iPhone 7 and iPhone 7 Plus, as well
as the last two generations of iPhone, all recent iPads, recent Macs,
peripherals like routers, and other electronic devices. And here's the deal:

我們花了一整天測試iphone 7跟iphone 7 plus,還有最近二代的iphone，所有最近的
iPad,最近的Macs，一些周邊設備像是路由器，或其他電子裝置，結論是:

They all make the same noises, and all to differing degrees. I initially
thought iPhone 7 Plus might be louder, but after putting a series of devices
through high-intensity CPU/GPU activity, which pulls much more power than
normal daily use, they all sounded roughly the same. That includes the
MacBook Pro I'm typing this on right now.

他們都產生同樣的噪音，而且程度都不一樣，我本來以為iPhone 7 Plus會比較大聲
但是如果讓所有裝置都處在比日常使用還要高CPU/GPU強度的狀態下
也就是消耗更多的電力，他們聽起來就都差不多吵
包含我正在打這篇文章的MacBook Pro

It also makes sense, given the people who noticed the noise did so while
their new iPhones were restoring, which migrates libraries, re-indexes data,
and otherwise puts the system through heavy load.

這樣的測試結果也算合理，一開始人們開始注意到這件事情是拿到新的iphone
然後還原系統，手機忙著整合函式庫，重新索引資料，因此系統處於高負載狀態

Since many people have now reported hearing the same sound from other devices
across a wide range consumer electronics and brands, and hardware engineers
around the internet have commented and tweeted explaining what the sound is
and why it's not only normal but expected, it seems highly likely nothing out
of the ordinary is going on. (I'd say "almost certainly", but I try not to
mistake my writing for an engineering degree!)

這種噪音其實在其他的消費性電子產品也可以聽到，硬體工程師也在網路上有很多說明
這種現象對電子產品來說幾乎是再正常不過了。 (我會說"幾乎確定"，但我盡量
使用工程師的專業來精準描述)

Perhaps there's something about the new iPhones that makes the sound louder
and more noticeable, or perhaps it's because everyone is hyper-vigilant
following the Galaxy Note 7 recall.

Regardless, there doesn't seem to be anything to be concerned about, not with
the processors, the batteries, nor the radios. So go back to setting up your
new iPhones, and enjoy!

可能因為新的iphone才會讓這種現象被放大或是被注意到，或是因為大家對於Note 7的
召回事件而過度警覺了。

總之，不用過度擔心，處理器、電池、無線電都沒問題，好好享受你的新iphone吧。


--------

資訊分享一下，這個網站測試了比較多的i-device
google一下coil whine，近期知名品牌中高階顯示卡有這種現象也所在多有
還不用耳朵貼著卡聽

我得貼著聽刻意去聽然後製造高CPU使用率才聽的到
也許我拿了二年的iphone 6也這樣，只是我從來不會這樣用 (給人了，沒法測試了)








--