DSD: pourquoi et comment?

[lambrays]

Celui ci peut il mettre tout le monde d'accord (Maybe Sir but at £ 3495) , c'est le Hugo M Scaler, trouvé sur le site Chord et signalé dans le n° de Novembre de Gramophone par Andrew Everard :


The Hugo M Scaler is a highly advanced standalone upscaler capable of redefining sound quality from digital audio. It uses Rob Watts’ (our Digital Design Consultant’s) unique filter technology, the most advanced in the world, to upscale standard 44.1kHz digital audio up to 705.6kHz (16x CD’s 44.1kHz native resolution), ready to be passed to a suitable DAC; Hugo M Scaler extends its upscaling performance to 768kHz (from 96kHz input data) for our dual-BNC-input DACs: DAVE, Qutest and the new Hugo TT 2.
The Hugo M Scaler brings the unrivalled advantages of our ground-breaking FPGA-based WTA (Watts Transient Alignment) filtering technology to digitally connected audio devices, dramatically improving sound quality. Although optimised for use with selected Chord Electronics DACs (for the maximum 768kHz upscaling/decoding benefit), the Hugo M Scaler can be used with other DACs with suitable inputs, subject to their decoding capability.
The Hugo M Scaler’s compact form factor aligns with the TT (Table Top) series and has been designed to be stackable with other units in the range, including the TToby stereo power amp and the Hugo TT 2, to form a highly advanced yet space-saving system. In line with other models in the Hugo and Hugo TT series, the device features a number of illuminable fascia-mounted spherical controls, governing input selection, output sample rate and video mode for lower latency. The control spheres display data visually including input source and the incoming sample rate, using a polychromatic scale.
When partnered with either of Chord Electronics’ 768kHz-capable dual-BNC-input DACs, the Hugo M Scaler sets an astonishing technical benchmark for digital audio performance at it price point, redefining sound quality from digital audio.


Personnellement j'aurai tendance  à craindre que l'amélioration se double d'une uniformisation des enregistrements. Mais c'est la première fois que j'entends parler de ce type de matériel.D'après Andrew Everard il s'agit d'une technologie jusque là appliquée subrepticement, destinée à renvoyer les bruits de conversion très au delà du spectre audible.     
Pour les plus courageux il y a un PDF qui explique la théorie qui est derrière tout cela sur le site de Chord .