32 bit and 24 bit. Difference??

I talked to a guy at my local music store recently and he said that Logic would "sound better" than Pro Tools because it records at 32 bit, where PT records at 24 bit. I'm a bit confused. I thought all recording programs recorded at 24 bit, just the resolution varied.

Can someone clear the air here. I just want to understand. Does the guy at the music even know what he's talking about?

I'm not trying to start a flame war between Logic and PT, I'm just reiterating what this guy said, that's all. Thanks.

NN

17" Intel Imac, Mac OS X (10.4.7)

Posted on May 15, 2007 7:53 PM

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9 replies

May 15, 2007 9:59 PM in response to NIKKI NEXO

No, he doesn't know what he's talking about. 32 bit PROCESSING is different than 32 bit recording depth. PT and Logic will record at both 16 and 24 bits.

Logic sounds only arguably better than ProTools because its summing bus algorithms are apparently better. Most people would say Logic sounds "warmer." That however, is personal preference in my opinion and negligible. The sound difference isn't that huge as to where I'd recommend one over the other in terms of sound alone. Pick whatever DAW you feel most comfortable working in. Logic's preinstalled PLUGINS are better. . . and that is without argument. . . it is common knowledge that PT packaged plugins are garbage at best. In terms of sound quality, however, some say Logic sounds better. It is not a proven fact though.

To answer your question. . . the guy at the store is a mo'ron.

May 15, 2007 10:51 PM in response to LogicalAnalysis

Logic sounds only arguably better than ProTools
because its summing bus algorithms are apparently
better. Most people would say Logic sounds "warmer."


I spent a brief amount of time comparing Logic Pro and ProTools LE, and their mix engines gave me identical results. Not similar--identical (mixes would phase cancel).

My little test was FAR from complete--it's not the final word on anything. But... I have yet to see anyone demonstrate or explain any conclusive mix engine differences between Logic and ProTools LE.

If anyone has more information, please share!

My guess is that the opinion that Logic sounds "warmer" is due to a comparison between the default plug-ins supplied with each program, not a comparison of mix engines. I agree that many of Logic's included plugs are noticeably better than the free Digi plugs, and I've found it easier to get a convincingly full and robust mix using the default Logic configuration.

But I haven't been able to demonstrate any difference in simple track summing--maybe someone else has more light to shed ?

James
james@nashvillain.com

May 16, 2007 1:26 AM in response to jnashguitar

that is because PT LE uses 32 bit floating point and PT HD uses 24bit fixed point.

the difference between floating and fixed is that with 32 bit floating, you cannot clip the audio internally - the 0 point 'floats' mathematically. i think the theoretical limit for 32 floating point is something like +500 db. roughly equivalent to an atomic explosion.....

you only need to worry about the 0 db limit at the output stage, when your mathematical signal is turned into fixed bit depth.

32bit floating and 24 bit fixed have argued over quite a bit on this forum. it is very interesting and you might enjoy doing a seacrh...

basically, you can have rounding errors with floating point which are more than compensated for by the fact that it is 1) 32 bit as opposed to 24 and 2) gives you huge flexibility when mixing.

24 bit means you have to be very careful about levels of ALL your tracks, because when they sum they cannot be over 0db. reducing the gain on the sum (if you can even do it) would effectively reduce your bit depth and therefore quality.

and logicalanlaysis was absolutely correct when he said the differences are negligible. as interesting as it is, far more important is how good your chune is.

May 16, 2007 9:27 AM in response to NIKKI NEXO

Gotta love those sales reps.

Mostly,he is just wanting to sell you stuff,so the rep will invent facts on the spot.Seen it before many many many times.

Next time you go to a music gear shop,pretend that what they sell are CARS,and then you will start to see what's really going on.

BTW I don't endorse any one company,but GC Pro and Sweetwater are way less prone to that kind of misinformation.

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32 bit and 24 bit. Difference??

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