According to Noise Addicts, I can't. At this link: http://www.noiseaddicts.com/2009/03/mp3-sound-quality-test-128-320/ it will tell you. I always encode all of my CD rips and MP3 mixes as 320kbps and It always sounded high quality to me, but apparently so does 128kbps.
Answer by catchatyou · Aug 11, 2011 at 09:54 PM
It depends on how you use it. If you're going to be playing it through massive speakers at let's say a concert, than you're definitely going to be able to tell the difference, but if you are just playing it through your headphones, built in speakers, or average 1/8" speakers, you most likely won't be able to tell the difference.
I personally use 256 kbps, because it's still high quality, and I can get away with playing it at a real event, but you can really tell the difference in that kind of environment.
Answer by HerpDerp · Aug 12, 2011 at 06:13 AM
As the others said, it depends on how good your speakers are. Either way, a higher bit rate is going to sound better. I had a 128kbps song and then listened to the 320kbps one. It sounded MUCH better and I have some really cheap headphones.