Audio Encoding
Updated: 2011-11-07 18:05:04
This was a very good test. You, sir, picked a very good song for this test (in the sense that it’s very hard to tell the difference). It took me several listenings to pick out the correct one (which i did manage).
Now i want to point out a few things here.
First of all, you didn’t specify how the encoding was done and with which encoder. You see, 128 kbit MP3′s are typically ALWAYS encoded in Joint Stereo by most modern encoders, while 320 kbit MP3′s can often vary between normal ...
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A year and a half ago, I bought Clutch’s Blast Tyrant album on CD. Immediately, something seemed…off. I am still new to the audio nerd scene, and was newer then, and I could not place the weirdness.
Later, I read a couple articles in Guitar World about recording music – especially hard rock and metal – and the author discussed mixing and mastering. Also, in reading up on the loudness wars, I became more and more attuned to the concept of over-compression. As I listened to Blast Tyrant more, it seemed ...
I used to think that audio files were basically a collection of snapshots of a spectrum analyzer with various frequencies at various levels. Then I realized, That isn’t how audio works!
On any given track, all the various frequencies superimpose to have a single oscillating voltage. Think about it: if you have only two frequencies – a very low bass and a high-mid, for example – the speaker will be movinng roughly slowly, but if you zoom in, it is oscillating to the frequency of the higher frequency even as the ...