In this case, @320 indicates the bitrate of the MP3 in kilobits.
Bitrate is the amount of data that is present in the file over a
certain amount of time. For example, the music you are referring to
has 320 kilobits of data stored in every second of each tune.
There is much debate as to whether the average person can hear a
difference between higher and lower bitrates.
I have condcuted blind tests in many places in the world (including
here at Usenet), offering $10k USD to anyone who can correctly
identify familiar rock and classical music as lossless (uncompressed
at all) and compressed at varying bitrates, from 128 to 320. No one
has ever been able to even come close to doing so.
However, many people (in my opinion, psychologically) perceive a
difference, and that's what's really important. So whenever I rip CDs
to MP3s, I do so @320 so that the greatest number of people will be
satisfied with the result. And, after all, hard drive storage space is
so cheap nowadays, there isn't really a reason to use a lower rate.
If you do see me posting tunes at a lower bitrate, it's because
someone else did the ripping, and I'm just sharing that person's work.
By the way, there are similarly perceived differences between true
stereo and split sereo, and between fixed and varaiable bitrates, but,
also similarly, the average person can't tell the difference between
those either. They are just technical differences between the ways the
sound is compressed and written to the file.
As to whether you should bother with songs other than @320, I will
leave that up to you, but I will say that I have been a professional
audio engineer for decades, and I am quite happy to have this great
music at any compression level.
Spidey
P.S. Before all you "Golden Ear" perfectionists start hating on me,
please kindly consider that all of the above is just opinion, and I
happily concede that yours may be very different. No offence intended.
On Thu, 15 Feb 2018 08:08:00 -0800, Tanji Kaynt <tanjiK@kero.eu>
wrote:
>Forgive. English not best.
>
>I ask maybe stupid thing.
>
>You say @320 some songs. Mean other songs you send not 320 and
>maybe bad ?
>
>These @320 songs more best ?
>
>I not should save other songs you send if no 320?
>
>Tanji
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