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Clothing That Can Record or Produce Sound

衣服可以錄制或發(fā)出聲音

Clothing is so yesterday. I mean, really, what can it do? It can't pick up sound, or beep at us if something's wrong. Or can it? M.I.T. researchers say they've developed a fiber that would allow clothing to eventually do those things. Their study is in the journal Nature Materials.

穿衣打扮早已成為明日黃花。我是說(shuō)，衣服嘛，還能變出什么花樣來(lái)？它又不能接收聲音，又不能在事情不對(duì)勁兒的時(shí)候發(fā)出警報(bào)。——??？什么？它可以?。　槭±砉W(xué)院的研究人員稱他們已經(jīng)開發(fā)出一種纖維，用這種纖維制成的衣服就可實(shí)現(xiàn)上述功能。他們的研究成果發(fā)表在《自然材料》上。

A big key to the fiber is a plastic commonly used in microphones. Its particular molecular structure involves a lopsided arrangement of fluorine atoms on one side and hydrogen atoms on the other. That asymmetry makes the plastic piezoelectric: it changes shape when it encounters an electric field.

制造這種纖維的關(guān)鍵技術(shù)是采用了一種常用于麥克風(fēng)的塑料。其特殊的分子結(jié)構(gòu)在于一側(cè)是氟原子而另一側(cè)是氫原子的不平衡排列。這種不對(duì)稱使得塑料產(chǎn)生壓電：當(dāng)它遇到電場(chǎng)時(shí)，形狀會(huì)發(fā)生改變。

So any electric current will then cause the fibers to vibrate. The fibers could act as a microphone or a speaker, depending on whether the vibrations were being recorded or amplified.

因此，任何電流都會(huì)導(dǎo)致纖維顫動(dòng)。而顫動(dòng)的纖維就可作為麥克風(fēng)或揚(yáng)聲器，這取決于纖維震動(dòng)是被錄下來(lái)還是放大了。

The clothing mic could capture speech, sure. But it could also monitor health by detecting almost imperceptible sounds from the body. Sounds like blood flow, which could make a shirt a 24-hour blood-pressure monitor. So maybe someday, your clothes will say: “I detect a rise in blood pressure. Please sit down.”

這種“服裝麥克風(fēng)”當(dāng)然可以錄下講話，也可通過(guò)偵測(cè)人體發(fā)出的幾乎難以察覺(jué)的聲音來(lái)監(jiān)測(cè)穿著者的健康狀況。比如血液流動(dòng)的聲音就能讓這種衣服24小時(shí)監(jiān)測(cè)血壓變化?；蛟S有一天，你的衣服會(huì)對(duì)你說(shuō)：“我發(fā)現(xiàn)您的血壓升高，請(qǐng)稍坐片刻。”

-Cynthia Graber

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