This calculation is based on the standard storage requirement for this bitrate, which is roughly of stereo audio. Key Characteristics of 128 kbps MP3s
This bitrate is generally considered "standard" or "mid-range" quality. It is widely used for podcasts, audiobooks, and spoken-word content where file size is more critical than high-fidelity sound. 128kbps mp3(2.77 MB)
An MP3 file encoded at (kilobits per second) with a file size of 2.77 MB contains approximately 3 minutes and 1 second of audio. This calculation is based on the standard storage