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Q: SD Card How many songs...? ( Answered ,   1 Comment )
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 Subject: SD Card How many songs...? Category: Computers > Software Asked by: genki2-ga List Price: \$3.00 Posted: 08 Dec 2003 11:12 PST Expires: 07 Jan 2004 11:12 PST Question ID: 284795
 ```Christmas came early and I got an MP3 player by Mpio. Yeah! OK now it's time to buy an SD card to expand my playlist. I don't know how to download songs from the internet but I have figured out uploading all my favorite cds and love it so far. Question: How many songs should I be able to fit on the common sd cards for sale? Some cards are 32mb, 64, 125, 256, 512, 1 gig. Surely the length of the song matters so let's just assume an average length of 3 minutes. But what about quality? Is it possible to save the songs from my cds in higher and lower qualities in order to fit more or less songs on an sd card? I was able to find info about numbers of pictures on a card but not songs. I hope a researcher can help find this info for me.```
 ```Hi genki2, Thank you for your question. I can give you a general guide on how many songs you can fit on a given card size. As you assume, the quality of the song or bit size will also determine how many songs you can fit within a given space. As a song is longer it takes more space. A 3 min 128kbits/s song will take twice as much space as a 3 min 64bits/s song. You can of course recompress your songs to a lower quality to fit more of them within a given space. 45 minutes of music at 64bits/s take up 25mb, this would equate to fifteen 3 minute songs. So on a 64mb card, this would be a little under 40 songs. On a 256mb card, this would be about 200 songs and so forth. However these are overestimates because songs are on average longer than 3 minutes. 64kbits/s is what is considered as acceptable quality for codecs such as WMA or OGG Vorbis. More likely you would be using MP3, and 128kbits/s is considered acceptable quality for MP3. At 128kbits/s you're talking at approximately 1 megabyte for 1 minute of music. So on a 256mb card you would fit about 70 songs or so. Apple quotes about the same for its Ipod players. It lists the Ipod 10gb as being able to hold 2500 songs at 128kbits/s, which would equate to 63 songs on 256mb. Or about 250 songs on a 1Gbyte card. If you want to calculate how much you can fit within a given size the formula is as follows: size in mb x 1000 x 8 / (quality in bits/s x 60) = number of minutes for that quality e.g. 256 x 1000 x 8 / (128 x 60) = 266 minutes Multiplication is by 1000 rather than 1024 because the definition of Mb in storage is not the same as the definition for data communications or the one that software uses. Personally I wouldn't recommend anything under 256mb, because then you just end up having to swap around the songs very frequently, and on long trips, the music gets repetitive. I hope this answers your question. If you require any clarifications, please do not hesitate to ask. Thanks. endo Search strategy Apple Ipod specifications http://www.apple.com/ipod/specs.html```
 genki2-ga rated this answer: and gave an additional tip of: \$1.00 `fantastic... thanks!`
 ```Thank you for the great rating and generous tip. Regards, endo```