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LP to CDR transfer, 24bit/96kHz vs. 16bit/44.1kHz, downsampling, HELP!!!

Posted by Kuja (A) on October 17, 2005 at 05:14:56

Hello,

I want to transfer a huge LP collection to CD-R for occasional listening, ...in my office, car etc.

I bought external M-Audio Audiophile USB ADC/DAC

It can record up to 24bit/96kHz

My TT rig is:
Thorens TD-126 MkI turntable,
SME 3009 S2imp arm,
Shure V15VxMR cartridge,
Graham Slee Gram Amp 2 SE phono preamp,

My SME was rewired with Van den Hul MCS - 150 M cable.
Cable from tone arm to preamp is Van den Hul D - 502 HYBRID.

Shure V15VxMR has this microridge stylus, which is great for archiving old LPs - much less distortion from worn out grooves.

The downside is that the treble is rolled off and the sound is too warm for my taste.

(yes, I played a lot with cables and capacitance, but this just seem to be the character of this cartridge)

Using test LP sweep tones, I created a custom graphic EQ preset for Adobe Audition 1.5 (CoolEdit originally before Adobe bought it).

Now I get ruler flat frequency response from my cartridge/cable/preamp combination and the sound is much crisper now :-)

The big question is:

do I record at 24bit/96kHz, apply the graphic EQ and then downsample to 16bit/44.1kHz?

At first I thought that this is a good idea.

But then I started reading numerous web pages dedicated to downsampling...

My brain got swollen from all this dithering, triangular noise shaping, custom curves, bit mapping, etc.

I came to conclusion that I might get some distortion, additional noise, lowered dynamic, digital artefacts, etc. when I downsample.

On the other hand, 24bit has much more information to work with...

I only plan to use the graphic EQ with the adjustments no bigger than +3.8 dB.

Nothing drastic.

Do I get better sound by applying moderate EQ in 16bit/44.1kHz,
or doing it in 24bit/96kHz (or better a 2x multiple of 44.1kHz) and then downsampling to 16bit/44.1kHz

If downsampling is better, what settings would you recommend for Audition/CoolEdit?

Thanks a lot,

Aleksandar

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