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Djm800 digital out / how to record at 44.1hz/16bits ?

Hello.

I want to record my mix from "sl1200mk2 technics turntable" with my djm800.

I use a PC to record with the "esi juli @" sound card.

I have the choice between rca analog / or digital coaxial.

I want to keep the best possible sound quality:

-is it better to use the REC OUT with rca:

 but the DJM800 is 100% digital, so there are several convertings,

 analog (vinyl) -> treated in digital inside of the djm -> analogue (REC OUT RCA) -> to finish in digital on the pc

 my rca cable is too short, I have to move my computer... and the frequencie of the recording cut above 20khz with this method.

-or is it better to use the digital output:

 but the djm800 digital out is only 48khz/24bit or 96kHz/24bits,

 and as it is to burn cd, I want to use 44.1khz/16bits.

 can i record in 44.1khz/16bits on the computer from the djm800 digital out signal wich is not in the same format.

 should i select 48 or 96khz on the djm output?

 is it a resampling and is it loose any quality to do that ?

how to adjust levels?  because I am very low with digital.

gain at middle ?    and should I put the master at the maximum level ? or middle also, not to go in the red ?

thank you for your advice.

redscreen

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summary,

can i record in 44.1khz/16bits on the computer,  from the djm800 digital out signal wich is not in the same format (96khz/24bits) ?

redscreen 0 votos
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@redscreen > You simply record at 48k and then either use software capable of automatically resampling the audio down to 44.1k for burning or resample it manually within your recording software.

Pulse 0 votos
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Thank's for the advice Pulse ;-)

I can record direct at 44.1k/16b via soundforge and the sound appear to be ok.

But someone says never do this !!! : if your signal is 96k/24b, you have to record it at 96k/24b (the same signal of the djm800 output) and downsample 44.1k, and bit-depth convert 16b (with use of dither and noiseshaping) later in the software.

I don't know if it's better, it's longer anyway, and I don't know much about the correct settings.

The only "issue" with digital is the low level, I have to put master at max value (0) and the gain also at a highlevel (3/4), and the vu-meter led are a lot in the red, therefore is it a sign of saturation ??... the sound appear to be ok, so... I wonder...

redscreen 0 votos
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Yeah, the proper way to do it is record at the same settings as the hardware then resample / convert.  When you're going down in intervals, it's not so bad.  Unfortunately 96 isn't easily divisible by 44.1.

With a DJM-800, the digital output level is an industry standard -19dB.  Play as normal then simply boost it later within the recording software.

Pulse 0 votos
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48 is not either divisible by 44.1 :-(

why not a 44.1k/16bit output on the djm800...?  that's another question, we have to do with it.

isn't it better to use analogue rec out in this case ? with analog(vinyl)->digital(djm)->analog(djmout)->digital(pc)...i think.

 

what is a "NORMAL" level with the master and the gain ?

gain at half value level (middle) i think ?   and master at  ??

 

redscreen 0 votos
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what is a "NORMAL" level with the master and the gain ?

because when the master is at his maximum value (0), the vu-meter is always in the red.

(but the signal in the recording softaware is far from the max).

can I play with the master at max (0), without saturation ? , although the led are fully in the red.

 

redscreen 0 votos
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@redscreen > You'll always get a better quality recording with a higher bit/sample rate.  Unfortunately the DJM series don't output digital at 16/44.1 so you have to record higher and down-sample for burning to CD.

Also, because the digital output is set to industry-standard pro levels of -19dB, you simply record at that level and up the recording in your software afterwards.  You're best to hit levels that aren't the max when recording either, even with the available headroom of the mixer.

Pulse 0 votos
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Thanks again for the advices Pulse.

So, it is better to use digital output as the output rec out, even if it is to finish in 44/16.

And no matter the level, I have just to normalize it after.

By cons I am French and don't understand your last words: in terms of setting levels and it is precisely this last point that I still doubt.

Can I adjust the master knob at max (0) ?

Because when I do that, the master vu-meter is higher than the input vu-meter (of the channel), and are a lot in the red,

although the recording signal don't touch the 0db , it can't saturate isn't it ?

In short, how to adjust the trim knob and master knob for best result ?

redscreen 0 votos
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@redscreen Keep the master level leds on the green (0) and record your mix in Audacity. After you've recorded your set, go to the effects menu in Audacity and choose Amplify to increase the volume of your mix.

See more in the Audacity manual: http://audacity.sourceforge.net/manual-1.2/index.html

Cheers!

oakstream 0 votos
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Ok, thanks for your reply,

I will stay out of the red so,

max in orange (number 7 off the led).

The master knob at (7.5/10), (to have the same channel's led level / and master's led level),

and the trim knob RELATIVELY LOW so, at (3.5/10).

Record at 96/24, normalize, save, and finally downsample at 44/16 for burning cd.

 

redscreen 0 votos
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