Are you looking to some files to this size, or are you curious about how higher bitrates like 320kbps compare in sound quality?
To understand why is the magic number, you have to look at the bit rate. At 128 kilobits per second , a computer processes 128,000 bits of data for every second of music. 128kbps mp3(2.65 MB)
(128 kbps × 180 seconds) / 8 bits per byte = 2.88 MB . Are you looking to some files to this
To the average listener using standard earbuds, the track sounds clear, punchy, and "correct." (128 kbps × 180 seconds) / 8 bits per byte = 2
Once you factor in silence at the start/end and the efficiency of the MP3 codec, you land right around that mark. The Sound of "Good Enough"
The 128kbps tier is famous for being the threshold of . Using psychoacoustic modeling, the MP3 format strips away sounds that the human ear struggles to hear—like a quiet flute note occurring at the exact same time as a loud drum crash.
The file size triples, but only audiophiles with high-end gear can consistently spot the difference. Why It Won’t Die