从iPhone7说起：为什么耳机接口必须死？
<p><span word="To">To</span> <span word="the">the</span> <span word="surprise">surprise</span> <span word="of">of</span> <span word="exactly">exactly</span> <span word="no">no</span> <span word="one">one</span>, <span word="Apple">Apple</span>’<span word="s">s</span> <span word="new">new</span> <span word="generation">generation</span> <span word="of">of</span> <span word="iPhones">iPhones</span> <span word="will">will</span> <span word="not">not</span> <span word="include">include</span> <span word="a">a</span> <span word="standard">standard</span> 3.5<span word="mm">mm</span> <span word="headphone">headphone</span> <span word="input">input</span>. <span word="The">The</span> <span word="decision">decision</span> <span word="signals">signals</span> <span word="the">the</span> <span word="demise">demise</span> <span word="of">of</span> <span word="an">an</span> <span word="audio">audio</span> <span word="port">port</span> <span word="that">that</span>’<span word="s">s</span> <span word="been">been</span> <span word="used">used</span> <span word="for">for</span> <span word="more">more</span> <span word="than">than</span> 100 <span word="years">years</span>—<span word="and">and</span> <span word="honestly">honestly</span>, <span word="it">it</span>’<span word="s">s</span> <span word="about">about</span> <span word="time">time</span>. <span word="The">The</span> <span word="death">death</span> <span word="of">of</span> <span word="the">the</span> <span word="headphone">headphone</span> <span word="jack">jack</span> <span word="is">is</span> <span word="a">a</span> <span word="very">very</span> <span word="good">good</span> <span word="thing">thing</span>. <span word="Hear">Hear</span> <span word="me">me</span> <span word="out">out</span>.</p><p>豪不令人惊讶的是，苹果的新一代手机将不再拥有标准的3.5毫米耳机接口。这一决定宣布已经被使用了一百多年的耳机死亡。说实话，这是迟早的事。耳机接口的死亡是一件好事情，听我慢慢道来。</p><p><span word="The">The</span> <span word="headphone">headphone</span> <span word="jack">jack</span> <span word="is">is</span> <span word="an">an</span> <span word="analog">analog</span> <span word="connection">connection</span> <span word="originally">originally</span> <span word="designed">designed</span> <span word="for">for</span> <span word="old">old</span>-<span word="fashioned">fashioned</span> <span word="telephone">telephone</span> <span word="switchboards">switchboards</span> <span word="in">in</span> <span word="the">the</span> <span word="early">early</span> 20<span word="th">th</span> <span word="century">century</span>. <span word="It">It</span> <span word="can">can</span>’<span word="t">t</span> <span word="transfer">transfer</span> <span word="nearly">nearly</span> <span word="as">as</span> <span word="much">much</span> <span word="data">data</span> <span word="as">as</span> <span word="a">a</span> <span word="digital">digital</span> <span word="connection">connection</span> <span word="like">like</span> <span word="a">a</span> <span word="Bluetooth">Bluetooth</span> <span word="or">or</span> <span word="Lightning">Lightning</span> <span word="connection">connection</span>. <span word="Plus">Plus</span>, <span word="the">the</span> <span word="headphone">headphone</span> <span word="jack">jack</span> <span word="only">only</span> <span word="sends">sends</span> <span word="information">information</span> <span word="one">one</span> <span word="way">way</span>: <span word="from">from</span> <span word="power">power</span> <span word="source">source</span> <span word="to">to</span> <span word="speaker">speaker</span>. <span word="But">But</span> <span word="that">that</span>’<span word="s">s</span> <span word="all">all</span> <span word="beside">beside</span> <span word="the">the</span> <span word="point">point</span>. <span word="The">The</span> <span word="most">most</span> <span word="obvious">obvious</span> <span word="reason">reason</span> <span word="why">why</span> <span word="the">the</span> <span word="headphone">headphone</span> <span word="jack">jack</span> <span word="had">had</span> <span word="to">to</span> <span word="die">die</span> <span word="is">is</span> <span word="simply">simply</span> <span word="because">because</span> <span word="the">the</span> <span word="new">new</span> <span word="wave">wave</span> <span word="of">of</span> <span word="wireless">wireless</span> <span word="headphones">headphones</span> <span word="will">will</span> <span word="be">be</span> <span word="more">more</span> <span word="convenient">convenient</span> <span word="and">and</span> <span word="enjoyable">enjoyable</span> <span word="to">to</span> <span word="use">use</span> <span word="for">for</span> <span word="everyone">everyone</span>. <span word="For">For</span> <span word="most">most</span> <span word="people">people</span>, <span word="wires">wires</span> <span word="are">are</span> <span word="obsolete">obsolete</span>.</p><p>耳机接口这种模拟连接原本是20世纪初专为老式电话交换机所设计的。作为一种数字链接，它无法像蓝牙和闪电连接那样传输那么多的数据。另外，耳机接口只能单向发送信息：从电源到扬声器。但是这都脱离重点了。耳机接口死亡最明显的原因仅仅是新一波无线耳机将更方便，而且让人们使用起来更加享受。对于大部分的人来说，有线耳机早就过时了。</p>
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