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Gear / Technical Help => Ask The Tapers => Topic started by: willndmb on July 19, 2006, 02:45:22 PM

Title: confused on memory card record times
Post by: willndmb on July 19, 2006, 02:45:22 PM
sometimes the more i look into stuff the more lost i become

i am trying to figure out how to come up with the record times/GB needed to hold the time, for different bitrates and such
can anyone tell me how to do it, or easier yet just tell me flat out the answer....
16/44
24/48
24/96
thanks
Title: Re: confused on memory card record times
Post by: kgreener on July 19, 2006, 02:51:09 PM
this might help:  http://www.tascam.com/Products/hdp2_rectimes.html

Sample Rate     44.1k/16-bit  48k/16-bit   48k/24-bit  96k/24-bit   192k/24-bit
512MB CF card  50 min         46 min        31 min        15 min         7 min 
1GB CF card     1.6 hrs         1.5 hrs         1 hr           30 min        15 min 
2GB CF card     3.3 hrs         3.1 hrs         2 hrs          1 hr            30 min 
4GB CF card     6.7 hrs         6.2 hrs         4.1 hrs       2 hrs            1 hr 
8GB CF card    13.5 hrs        12.4 hrs        8.2 hrs       4.1 hrs         2 hrs 
Title: Re: confused on memory card record times
Post by: Oysterhead00 on July 19, 2006, 02:52:23 PM
That's a great question and there should be a sticky made with the various file sizes for Flash/HD/HiMD recording devices.  I love to see the ads that say you can "Record up to 40 hours of audio on the supplied 32MB card"...must be 8kbps super compressed mono MP3s or something :)
Title: Re: confused on memory card record times
Post by: willndmb on July 19, 2006, 02:54:48 PM
wow thanks a lot +T
Title: Re: confused on memory card record times
Post by: kgreener on July 19, 2006, 02:55:32 PM
back atcha!
Title: Re: confused on memory card record times
Post by: Brian Skalinder on July 19, 2006, 04:22:37 PM
Quote from: Oysterhead00 on July 19, 2006, 02:52:23 PM
That's a great question and there should be a sticky made with the various file sizes for Flash/HD/HiMD recording devices.

It's not stickied - too many threads of interest to warrant stickying  them all - but it is in the Archive:

Quote from: Bri on October 08, 2002, 12:18:58 PM
Want to know what size your 16-bit or 24-bit files will be on hard drive at different sample rates?  Here you go...

Bit-Depth      Sample Rate (in kHz)       MB Per Track-Minute
16                  44.1                                 5
16                  48                                    5.5
24                  44.1                                 7.6
24                  48                                    8.25
24                  96                                    16.5
24                  192                                  33

A typical CD-R can hold just over 21 track minutes of 24/96 audio...

And I've added kgreener's post to the Archive thread as well:

Quote from: kgreener on July 19, 2006, 02:51:09 PM
this might help:  http://www.tascam.com/Products/hdp2_rectimes.html

Sample Rate     44.1k/16-bit  48k/16-bit   48k/24-bit  96k/24-bit   192k/24-bit
512MB CF card  50 min         46 min        31 min        15 min         7 min 
1GB CF card     1.6 hrs         1.5 hrs         1 hr           30 min        15 min 
2GB CF card     3.3 hrs         3.1 hrs         2 hrs          1 hr            30 min 
4GB CF card     6.7 hrs         6.2 hrs         4.1 hrs       2 hrs            1 hr 
8GB CF card    13.5 hrs        12.4 hrs        8.2 hrs       4.1 hrs         2 hrs 
Title: Re: confused on memory card record times
Post by: willndmb on July 19, 2006, 07:33:34 PM
thanks
the one originally posted above is much easier to understand for me though
Title: Re: confused on memory card record times
Post by: JasonSobel on July 19, 2006, 07:36:42 PM
this is something that I put together a while back:
http://24bit.turtleside.com/pcm.wav.file.sizes.pdf (http://24bit.turtleside.com/pcm.wav.file.sizes.pdf)
it also shows how to calculate everything as well, in case you are interested...
Title: Re: confused on memory card record times
Post by: willndmb on July 19, 2006, 10:18:43 PM
nice
thanks again to everyone its been a huge help
Title: Re: confused on memory card record times
Post by: Oysterhead00 on July 22, 2006, 06:37:30 PM
Quote from: JasonSobel on July 19, 2006, 07:36:42 PM
this is something that I put together a while back:
http://24bit.turtleside.com/pcm.wav.file.sizes.pdf (http://24bit.turtleside.com/pcm.wav.file.sizes.pdf)
it also shows how to calculate everything as well, in case you are interested...

Really cool if you're at a festival and want to calculate if you should tape the next couple bands at 24bit or 16bit and ensure you have enough space for the headliner!
Title: Re: confused on memory card record times
Post by: BobW on July 22, 2006, 11:58:31 PM
More good info, courtesy of Sound Device (http://sounddevices.com/tech/recordtime.htm)s:
http://sounddevices.com/tech/recordtime.htm

N.B.- The Tascam times are for stereo, so half them for post production matrix 4 channel recordings or double them for mono.