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24 bit / 96 Hz demo file , need help !!
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Nadzz
Im working on a demo cd and i have a big big problem because de file size his way to large ton burn it an audio cd.

I recorded a 40 min set with my audiophile 24/96 sound card and soundforge 7.0 , but the file size is enormous : 1,2 Gig :eek:

I want to keep my set at the higest sound quality what can i do ?

Thanks
- Nadzz
retrobyte
Audio CD standard is 44.1khz/16-bit, so if you're going to burn it to an audio CD, use soundforge to change the sample rate and bit depth down to that and then burn away.

Are you doing your set from CDJs or Vinyl? If you're doing it from vinyl, sampling that high is okay - but going that high on CDs is a bit overkill.
Nadzz
quote:
Originally posted by retrobyte
Audio CD standard is 44.1khz/16-bit, so if you're going to burn it to an audio CD, use soundforge to change the sample rate and bit depth down to that and then burn away.

Are you doing your set from CDJs or Vinyl? If you're doing it from vinyl, sampling that high is okay - but going that high on CDs is a bit overkill.



I used both CDJs and Vynil ... Is there anyway to converted the set from 96 khz/ 24 bit to 44.1khz/16-bit in Sounforte, or another program can do it ??
BOOsTER
open your soundforge...click help and see contents...you'll find it there ;)
Derivative
you should dither the 24 bit/96khz render down to 16 bit/44.1 khz before you stick it on cd. provided you know what you are doing. if you dont it could all go horribly wrong though.

nevertheless you can do provided you have some sort of dithering application or mastering toolset. izotope ozone is one of them. waves L1, 2 and 3 can all dither too.

the point is, throwing away 8 bits introduces quantization noise. this noise is probably only audible at about -120 decibels but it can be annoying when you notice it and long fade outs will sound strange if you listen to it, as the signal degrades into noise. its subtle but there. dithering reduces this to some extent.

you may want to read up about it because its a huuuge area in itself.
Zild
Next time you're recording a set that you want to put on CD just save yourself the trouble and record it at 16bit 44.1khz.
erdega
burn it to dvd, duh!!!
They are cheap anyway
Soundwerks
just save it as a WAV file, 44.1 khz/16 bit (I beleive when you do SAVE AS, you can choose the type of file).

Simple as that ;)

Next time, just record it to that setting.
idoru
Lower it to 16-Bit/44.1KHz as was previously mentioned.

You do NOT need it to be 96KHz, as human ears only hear sound within the 2-20KHz range. 44.1KHz, even though it is CD-quality, is far more than enough in the first place.
Zild
quote:
Originally posted by idoru
Lower it to 16-Bit/44.1KHz as was previously mentioned.

You do NOT need it to be 96KHz, as human ears only hear sound within the 2-20KHz range. 44.1KHz, even though it is CD-quality, is far more than enough in the first place.


You're right about the range of frequencies humans hear but that isn't what the 96khz or the 44.1khz signifies. It signifies the sample rate, and yes humans can hear the difference between the two sample rates(the whole point of DVDs and SACDs, etc...), but that doesn't matter because CDs don't support anything higher than 16bit 44.1khz.

idoru
quote:
Originally posted by Zild
You're right about the range of frequencies humans hear but that isn't what the 96khz or the 44.1khz signifies. It signifies the sample rate, and yes humans can hear the difference between the two sample rates(the whole point of DVDs and SACDs, etc...), but that doesn't matter because CDs don't support anything higher than 16bit 44.1khz.


I stand corrected. :)
Zild
It's ok but remember if you ever work with audio production that using 24bit and 96khz is actually useful and you can hear the difference. You can go up to 192khz in most pro studios and it sounds cleaner, you get more headroom and you can dither it back down to CD standards whenever you need to.
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