测试 你能听得出无损与压缩的区别么?

2022-06-24 19:32:00



耳机发烧友对待听音乐这件事都认真得有些龟毛,除了爱折腾前端和耳机以外,对于音乐的格式选择,自然也不能疏忽。经过压缩的MP3格式往往不能登上大雅之堂,但是你真的可以听出无损音乐和压缩格式的差别吗?一位歪国人朋友用六首歌做了一个小实验,测试一下你是否真的可以听出这些音乐的细微差别,拥有令人羡慕的“金耳朵”



这个网站一共提供6首歌曲作为测试曲目,每一种歌曲都有3种格式,分别是128kbps和320kbps的MP3格式以及未压缩过的WAV格式。这几首歌曲囊括了不同的风格与流派,流行、摇滚、人声、钢琴与古典歌曲都有表现。要想听出三种格式的差别,并不是一件容易的事:这关乎到你耳机和扬声器的质量、房间的大小与类型、你的耳朵……在十分安静的环境下,戴上耳机,给自己的耳朵测试一把。测试过的朋友都表示,要分辨她们之间细微的差别,其实还是有些困难的!



↑对于每一首歌,听三个样本,选择一个你认为是最高质量的音频。


关于音乐格式的小贴士


(以下文字翻译自该测试网站,英文原文请点击“阅读原文”。)


In the late 1980s, when the engineers working on the MP3 were testing their creation, they picked one song to make sure the compression of the audio wouldn’t destroy the sound of the human voice.


That song? The a cappella version of Suzanne Vega’s “Tom’s Diner,” from the 1987 album Solitude Standing. The leader of that team of German engineers, Karlheinz Brandenburg, estimates he listened to the song “500 or 1,000 times.”


在上世纪80年代末期,工程师们致力于MP3格式的创造。他们选择了一首歌,希望确保音频的压缩不会让人的歌声受损。他们选择了一首美国歌手苏珊·薇格(Suzanne Vega)1987年发布的个人第二张专辑《孤独站立》(Solitude Standing)中《Tom's Diner》清唱版。为了这个测试,德国的工程师团队的Karlheinz Brandenburg听了这首歌“500——1000次。”


Tom's Diner Suzanne Vega - BillBoard Top 100 Of 1991

↑苏珊·薇格《Tom's dinner》


Going by statistics, 2014 looks like a key moment for streaming music: According to Nielsen SoundScan, sales of digital songs dropped by more than 12 percent, while on-demand streaming grew more than 50 percent.


Despite the rise of streaming services like Spotify, the single biggest way people stream music is still YouTube — on-demand video streams topped 85 billion last year. There were songs that racked up more plays on YouTube and on audio-only streaming services, but when you include audio and video, “Dark Horse” was the single most streamed song of 2014.


经过统计,2014年看起来像是流媒体音乐的关键时刻,数据称:销售的数字歌曲下降了12%,而线上点播歌曲的增长超过了50%。


尽管有像Spotify(Spotify是全球最大的正版流媒体音乐服务平台之一)这样比较专业的流媒体服务,但是人们仍然最热衷于使用Youtube,Youtube去年的视频点播超过了850亿,你可以在Youtube上轻松点播视频、音乐。Katy Perry的《dark horse》是去年在Youtube上获得点击量最多的歌曲。


Dark Horse Katy Perry - Dark Horse

2014全年在Youtube上的最红歌曲《Dark Horse》


The story of digital music didn’t begin with the compact disc, but that’s where it went mainstream. Though the CD was marketed as a higher-quality listening experience when it first emerged in the early 1980s, many albums burned onto CD were inadequate, crude copies of old recordings.


It’s worth noting that not everyone loved digital recordings — at first, some audiophiles complained of cold, brittle sound.


数字音乐的故事并不是从光盘开始,但是光盘使数字音乐成为主流。尽管在1980年早起,CD的出现是一种高质量的听音体验,但是许多专辑的CD版本仍有不足。并不是所有的人都喜欢数字录音,有一些发烧友抱怨数字录音的声音听起来冷、脆弱。


In 2006, “Speed of Sound” was the 1 billionth song downloaded from Apple’s iTunes store. When Apple launched the store in 2004, the songs were encoded — using Apple’s own AAC file format — at 128 kbps and sold for $0.99 each.


In 2007, Apple unveiled iTunes Plus, and began selling tracks encoded at 256 kbps for $1.29. The price hike lasted a few months, until all songs were again made available for $0.99.


2006年,英国摇滚乐团Coldplay的歌曲《Speed of Sound》在苹果的音乐商店iTunes倍下载超过10亿次。iTunes,苹果推出的音乐线上商店,提供的歌曲使用苹果自己128kbps的ACC文件格式,每首歌曲售价0.99美元。


2007年,苹果推出了iTunes +,开始销售256 kbps的歌曲,每首1.29美元。价格上涨持续了几个月,但是后来每首歌曲的售价依然维持在了0.99美元。


Speed Of Sound Coldplay - Speed Of Sound

↑iTunes上下载超10亿次的歌曲《Speed Of Sound》


Tidal, the “artist-owned” streaming service introduced by Jay Z (and many famous friends) in March 2015, hasn’t yet set the streaming world ablaze, despite the promise of higher-quality audio (you can pay $9.99/month for a standard MP3-quality subscription or $19.99/month for access to lossless quality; there is no free option) and higher-than-Spotify royalty rates for musicians.


Despite the high-profile launch, Jay Z has admitted that Tidal’s hi-def tier isn’t for everybody. In April, he told NYU students, “If you have a $10 pair of headphones, you should probably buy the $9.99 plan.”


2015年3月问世的无损音乐流媒体平台Tidal,由说唱天王Jay Z和他圈内的一票好友共同创立。在Tidal,可以享受到高质量的音乐。这个平台不是免费使用的,你可以选择订购每月9.99美元的标准MP3格式或19.99美元的无损音乐格式。


尽管高调的推出了这个高品质音乐平台,但Jay Z还是承认Tidal并不适用于所有人,他告诉纽约的大学生们,如果你只拥有一条10美元的耳机,建议你还是选择9.9美元/月的服务。



星光熠熠的Tidal平台


↓↓↓点击“阅读原文”,一起来测试一下吧!别忘了转给亲朋好友,看看谁是真正的金耳朵!(如不能打开,请复制网址在浏览器打开,建议在电脑上测试。http://www.npr.org/sections/therecord/2015/06/02/411473508/how-well-can-you-hear-audio-quality


——CrazyStudio——

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