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Re: Is sound quality enough of a reason to allow CDJ's?
Posted: Mon Jan 25, 2010 11:10 am
by apotheist
erm ... ever thought of serato? or traktor, torq, whatever ...
Re: Is sound quality enough of a reason to allow CDJ's?
Posted: Mon Jan 25, 2010 12:34 pm
by lowpass
The argument is more about the audio quality between digital vs vinyl, not how easy it is to use one or the other. Using Dvs systems has the same audio quality of cd's (depending on the quality of audio interface) not vinyl.
Re: Is sound quality enough of a reason to allow CDJ's?
Posted: Mon Jan 25, 2010 1:02 pm
by ghst
lowpass wrote:This threads hurting my head, from what I know:-
- Cd's do not brick wall at 22khz, there is a reason that the frequencies go up to 22 and not 20 and that is so that the filter can be more gradual, affecting the audio in the audible range much less. There is another argument that cutting frequencies above this still affects us because it is not just our ears that "hear" the music (different argument however)
I'm pretty sure they do brick wall at 22k, shannon-nyquist theorem?
lowpass wrote:
- Tape does create the biggest bass
haha best highs more like! 2inch at 30ips will have trouble with 45hz but will reproduce 25khz happily
Re: Is sound quality enough of a reason to allow CDJ's?
Posted: Mon Jan 25, 2010 1:32 pm
by collige
ghst wrote:lowpass wrote:This threads hurting my head, from what I know:-
- Cd's do not brick wall at 22khz, there is a reason that the frequencies go up to 22 and not 20 and that is so that the filter can be more gradual, affecting the audio in the audible range much less. There is another argument that cutting frequencies above this still affects us because it is not just our ears that "hear" the music (different argument however)
I'm pretty sure they do brick wall at 22k, shannon-nyquist theorem?
Lowpass is right. It's mathematically impossible to have a brick wall filter. Nonetheless, there are still not going to be any frequencies higher than 22khz on any medium unless the producer is on a mad audiophile tip.
Re: Is sound quality enough of a reason to allow CDJ's?
Posted: Mon Jan 25, 2010 6:08 pm
by boogiemeister
an analog signal theoretically has infinite resolution, there is something above 22 kHz but you wouldn't hear/feel it anyway. Here's a couple of seconds of a vinyl recorded at 96 khz, 24 Bit. The signal doesn't cut off at 16 or 20 or whereever it goes all the way to the top.

Personally I don't like the sound of digital clipping when you play really loud. Records sound not that harsh even when the whole rig runs through a limiter. However that's a matter of personal taste. CD's/mp3's are generally mastered much louder than records. I think CDs sound great at home or in the car but when playing out I think they sound too "clean" in a way. But still like I said, it's a matter of personal preference. I prefer Serato/Traktor/Mixvibes whatever over CDJs since you can still see how the songs goes, where the breaks are etc, kinda similar to what you see on the grooves of a record. The small graph on a CDJ doesn't really cut it for me.
Re: Is sound quality enough of a reason to allow CDJ's?
Posted: Mon Jan 25, 2010 7:31 pm
by twentyOneDummies
I say spin what you enjoy and feel comfortable with. Personally I'm quite visual and enjoy cutting up/resampling tracks in ableton but I can definitely appreciate the tactile sensation of a vinyl (I learned to mix on 1200s) and the ease of CDJs. Think about it from an audience's point of view: it's absolutely ridiculous to get mad at a DJ over which format he's using. Assuming you're using proper store bought files and the promoter's got a reasonably well set-up soundsystem then the quality will be fine and it comes down to your skills, ability to read a crowd etc.
Re: Is sound quality enough of a reason to allow CDJ's?
Posted: Mon Jan 25, 2010 7:50 pm
by TRNSPLNT
if you afford it, get 1000's or 900's or 2000's if your minted.
ive got 200's. i love them, but if i had the cash i'd take the step up. but i wouldnt say you NEED 1000's