: MP3 uses perceptual coding to remove information the human ear is less likely to hear, such as sounds masked by louder ones or frequencies above 16 kHz.
: Most 128 kbps encoders apply a low-pass filter , typically cutting off frequencies between 16 kHz and 17 kHz. Quality and Perception 128kbps mp3(-1 B)
Hi. It is worst if My Download MP3 File is on 128kbps - Facebook : MP3 uses perceptual coding to remove information