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When burning a CD, you can either burn it as a data disc or an audio CD. A data CD can hold up to 700 MB, while an audio CD can hold 80 minutes of sound. If you have 200?MB of MP3 files that add up to three?hours of music, you can still only burn 80 minutes to the disc.?Why is that?

刻錄CD時，可以將其刻錄為數據光盤或音頻CD。 數據CD最多可以容納700 MB，而音頻CD可以容納80分鐘的聲音。 如果您擁有200 MB的MP3文件 ，最多可以添加三個小時的音樂，則仍然只能將80分鐘刻錄到光盤上。 這是為什么？

刻錄數據CD時會發生什么 (What Happens When You Burn a Data CD)

At the time of burning, you choose to burn either a data CD or audio CD. Your disc burning program burns the disc in a different format depending on the option you choose.

在刻錄時，您選擇刻錄數據CD或音頻CD。 光盤刻錄程序會根據您選擇的選項以其他格式刻錄光盤。

Data CDs are simple to understand. When you burn a data CD containing MP3s or any other type of file, your computer creates a disc containing those files. The files on the disc are the same size as they are on your computer. So, if you have 200 MB of MP3s you want to burn to a 700 MB disc, you can place the MP3 files and up to 500 MB of other data files on the disc.

數據CD易于理解。 刻錄包含MP3或任何其他類型的文件的數據CD時，計算機將創建包含這些文件的光盤。 光盤上的文件大小與計算機上的文件大小相同。 因此，如果要將200 MB的MP3刻錄到700 MB的光盤上，則可以在該光盤上放置MP3文件和最多500 MB的其他數據文件。

為什么刻錄音頻CD有所不同 (Why Burning an Audio CD is Different)

Burning an audio CD is different. Audio CDs are not the same thing as data CDs, and they do not contain MP3 files.

刻錄音頻CD有所不同。 音頻CD與數據CD不同，它們不包含MP3文件。

An audio CD contains audio data in CDDA (Compact Disc Digital Audio) format. This is uncompressed audio data, and it requires a lot more space than MP3 files, AAC files, or any other type of compressed audio file. A?minute of CDDA audio always takes up the same amount of space on the disc, which is why you can only burn a maximum number of minutes to a disc. Even if the songs ?you’re burning are in MP3 format, they have to be converted to the larger CDDA format if you want the disc to work in a regular CD player.

音頻CD包含CDDA(光盤數字音頻)格式的音頻數據。 這是未壓縮的音頻數據，并且比MP3文件，AAC文件或任何其他類型的壓縮音頻文件需要更多的空間。 一分鐘的CDDA音頻始終占用光盤上相同的空間，這就是為什么您最多只能將幾分鐘刻錄到光盤上的原因。 即使您要刻錄的歌曲是MP3格式，如果您希望光盤可以在常規CD播放器中工作，也必須將其轉換為較大的CDDA格式。

It goes the other direction, too. Audio?CDs you buy in stores can only have a maximum of about 80 minutes of sound, but if you rip an album to MP3 or AAC format, it will use less than 700 MB of storage space on your PC. In order to convert CDDA to MP3, your computer uses a?“lossy” compression process, where some data is thrown out. Otherwise, your ripped music collection would take up an awful lot of space!

它也朝另一個方向發展。 您在商店購買的音頻CD最多只能有大約80分鐘的聲音，但是如果將唱片翻錄成MP3或AAC格式 ，則PC上將使用不到700 MB的存儲空間。 為了將CDDA轉換為MP3，您的計算機使用了“有損”壓縮過程 ，其中一些數據被丟棄。 否則，您翻錄的音樂收藏將占用大量空間！

將MP3刻錄到音頻CD并不理想 (Burning MP3s to Audio CDs Isn’t Ideal)

If you burn an MP3 to an audio CD, the MP3s will expand to take up the same amount of space as the original audio data. However, the resulting disc will have inferior audio quality when compared to the original audio CD.

如果將MP3刻錄到音頻CD，則MP3會擴展為占用與原始音頻數據相同的空間。 但是，與原始音頻CD相比，最終的光盤將具有較差的音頻質量。

When you rip music from a CD to an MP3 file or AAC file, you’re not getting all the original audio data. Some of the data is discarded to ensure the MP3s have a small file size.?The resulting MP3 files won’t necessarily sound as good as the original disc. How good they’ll sound depends on the encoder you use and its bitrate settings. Your headphones and speakers are also a factor: It will?be easier to tell the difference with higher-quality, more expensive headphones.

當您將音樂從CD翻錄到MP3文件或AAC文件時，您不會獲得所有原始音頻數據。 丟棄某些數據以確保MP3的文件大小較小。 生成的MP3文件不一定聽起來像原始光盤一樣好。 它們的音質如何取決于您使用的編碼器及其比特率設置。 您的耳機和揚聲器也是一個因素：更高質量，更昂貴的耳機更容易分辨出差異。

This is why audio geeks like lossless formats like FLAC, which provide some compression but keep all the original audio data. If you burn lossless files like FLAC to a disc, you’ll have an audio CD with sound quality?good as the original.

這就是為什么音頻極客喜歡FLAC之類的無損格式，它提供了一些壓縮功能，但保留了所有原始音頻數據。 如果將FLAC等無損文件刻錄到光盤上，則將獲得音質與原始CD一樣好的音頻CD。

When you burn lossy files like MP3s to an audio CD, the MP3s will be converted to?CDDA audio, which takes up more space on disc. But all the audio data that was discarded when the MP3s were created can’t be restored.

當您將有損文件(例如MP3)刻錄到音頻CD時，MP3將轉換為CDDA音頻，這會占用更多的磁盤空間。 但是創建MP3時丟棄的所有音頻數據都無法恢復。

Of course, if you’re already happily listening to the MP3 files, an audio CD you burn from those files won’t sound worse any worse than the MP3s. But it won’t necessarily sound as good as the original audio disc, either.

當然，如果您已經愉快地收聽了MP3文件，那么從這些文件中刻錄的音頻CD聽起來不會比MP3更糟。 但是它的聲音也不一定像原始音頻光盤那樣好。

某些光盤播放器支持MP3 CD (Some Disc Players Support MP3 CDs)

There’s a compromise available, too. Some?CD players can read both standard audio CDs and “MP3 CDs”.

也有一個折衷方案。 一些CD播放器可以讀取標準音頻CD和“ MP3 CD”。

An MP3 CD is exactly what it sounds like. Rather than converting the MP3 files to CDDA while burning an audio CD, you burn the MP3 files to a data CD. The disc player then reads the CD, loads the MP3 files, and plays them just like a computer would.

MP3 CD就是它的聲音。 而不是在刻錄音頻CD時將MP3文件轉換為CDDA，而是將MP3文件刻錄到數據CD。 然后，光盤播放器將讀取CD，加載MP3文件，然后像播放計算機一樣播放它們。

To find out if your disc player supports MP3 CDs, look for an “MP3” logo on it. You can also read its instruction manual or check its specifications, and you should see MP3 support listed if it has it.

要確定您的光盤播放器是否支持MP3 CD，請在其上尋找“ MP3”徽標。 您還可以閱讀其說明手冊或查看其規格，如果有，則應該看到列出的MP3支持。

To create an MP3 CD, you simply burn a data disc and fill it with up to 700 MB of audio files. You may want to organize the MP3s into folders so they’re easier to navigate through on your disc player. Some applications, like iTunes, have an “MP3 CD” option, but you can achieve the same thing by burning the MP3 files to a data disc with any disc-burning tool.

要創建MP3 CD，您只需刻錄數據光盤并用最多700 MB的音頻文件填充即可。 您可能希望將MP3整理到文件夾中，以便在光盤播放器上更輕松地瀏覽它們。 某些應用程序(例如iTunes)具有“ MP3 CD”選項，但是您可以通過使用任何光盤刻錄工具將MP3文件刻錄到數據光盤來實現相同的目的。

These CDs won’t work on any old CD player, so this isn’t the most compatible solution. But, if you use a CD player that supports MP3 CDs—maybe your car stereo does, for example—you can burn MP3 CDs instead of audio CDs to fit more music on a disc.

這些CD無法在任何舊的CD播放器上運行，因此這不是最兼容的解決方案。 但是，如果您使用支持MP3 CD的CD播放器(例如，您的汽車立體聲音響確實如此)，則可以刻錄MP3 CD而不是音頻CD，以在光盤上放入更多音樂。

Image Credit: Wikimedia Commons, Flickr

圖片來源： Wikimedia Commons ， Flickr

翻譯自: https://www.howtogeek.com/322676/why-can-i-only-burn-80-minutes-of-music-to-a-cd-if-my-mp3s-take-up-less-than-700mb-of-space/

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