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In the Forum: Didital Things
In the Thread: Reference Recordings “digital master” and Berkeley's new DAC

Post Subject: Noise shaping... why on earth?Posted by manisandher on: 3/26/2009

I received three Reference Recordings discs yesterday - 'Exotic Dances from the Opera', 'Rachmaninoff Symphonic Dances' and 'Dick Hyman Thinking of Bix'. I'm surprised that I actually like these (musically speaking) more than I thought I would.

But playing around with RME's Digicheck again, I notice a steady rise in noise, with a -85dB peak at around 25KHz. This then drops quickly away.

I'm no expert, but it looks like noise shaping has been used when recording these. Now why would this be necessary, if they were being recorded at 24/176? Or is this an unavoidable result of using delta-sigma chips in the A/D?

I'm sure this has no effect on the sound... I'm just curious...

Mani.

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