As you work with digital music and other audio files, you’ll encounter a number of different file formats that you need to understand. This is important because each of these formats offers specific benefits and limitations that impact what you do with your music. For example, some file formats offer better music quality versus file size than others. You definitely don’t need to have all the specifications for each of these formats committed to memory; instead, all you need to be able to do is to distinguish between them and to be able to choose the format that is the most appropriate for what you are trying to do.
Most audio file formats are encoded. What this means is that specific compression algorithms are used to reduce the size of the audio file without, hopefully anyway, lowering the quality of the resulting sound very much. The higher the compression that is used, the lower the quality of the resulting music when it is played back. Note that the words higher and lower are relative. Often, it takes a musical expert to tell the difference between encoded and unencoded music, but even if it is imperceptible to us mere mortals, it does exist.
When it comes to digital audio files, one trade-off always has to be made. And that is file size versus sound quality. When you add thousands of songs to your iTunes Library, you can easily consume gigabytes of disk space. Although you might have a humungous hard drive in your computer, you might also have other files you want to store on it, such as photos, Word docs, and so on. Even I realize that computers can be used for more than just music.
To keep the amount of disk space required to store your music to a minimum, you will encode it. When you do, you choose the settings you want to use to encode that music. The more encoding you apply, the less space the music will consume, but the lower quality the playback will be. You will quickly find a happy medium between file size and how the music sounds to you.
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