Print Page - Calculating bitrate & space requirements

Title: Calculating bitrate & space requirements
Post by: DickxLaurent on 2006-09-25 17:19:05

Please help me verify that I'm doing this math correctly. I'm trying to figure out how many minutes of MP3 at 56 kbps will fit into 32 MB. What is the correct formula for this?

I'm getting ~78 minutes. Though knowing that I'm using the correct formula also would be helpful for future use.

Thanks!

Title: Calculating bitrate & space requirements
Post by: pest on 2006-09-25 17:45:27

Quote

Please help me verify that I'm doing this math correctly. I'm trying to figure out how many minutes of MP3 at 56 kbps will fit into 32 MB. What is the correct formula for this?

I'm getting ~78 minutes. Though knowing that I'm using the correct formula also would be helpful for future use.

assuming that the mp3-frames are exactly 56000 Bits/s
and the free space is exactly 32mb which is 32*2^20*8 Bits
you get (268435456 / 56000 / 60 ~ 79min)

Title: Calculating bitrate & space requirements
Post by: haregoo on 2006-09-25 17:47:45

56kbps stream consumes 0.42MB per minute. Formula is following.

56/8*60/1000=0.42MB/min
32MB/0.42=76.1904...min

Title: Calculating bitrate & space requirements
Post by: ...Just Elliott on 2006-09-25 22:36:01

http://waxy.org/projects/mp3calc/ (http://waxy.org/projects/mp3calc/)

Title: Calculating bitrate & space requirements
Post by: pest on 2006-09-25 22:40:07

kids always need calculators

HydrogenAudio

Hydrogenaudio Forum => General Audio => Topic started by: DickxLaurent on 2006-09-25 17:19:05