esto es lo que dice su diseñador en head fi:
Rob Watts
Sponsor: Chord Electronics
Joined: Apr 1, 2014
OG10 said: ↑
Can someone explain how this works.. how do you "add-in" new information into a 16bit 44.1khz signal from a CD transport? - I love Chord Electronics and love my Qutest - but what exactly will this add to the signal path?
Interesting post - I am actually not adding in any more information - the information is all contained in the original bandwidth limited sampled signal. but what we have is sampled data, and what we need is a continuous un-sampled signal - and we need to do a huge amount of processing to do this without error. I will give you an example. Imagine a sine wave. You can state it's a sine wave; give its frequency and its amplitude. So the information content is fixed; but if you want a waveform of infinite length, and precision, then you would need an infinite amount of processing to create the infinite number of points. And with the sampled data, we can convert it to a continuous signal - with exactly the same information content - and recover the original bandwidth limited continuous signal - if and only if you do an infinite amount of processing and use an ideal sinc function interpolation filter. So I am not trying to create new information - actually we are converting from a sampled bandwidth limited signal to a continuous with exactly the same information. The problem with conventional filters is they are the ones that are adding extra information, as the interpolated signal is different from the original. What I am trying to do is merely reduce these errors, which are audible as it degrades the timing of transients - something which is essential from human psychoacoustics.bidn said: ↑
Dear Rob,
Thank you for creating the M - Scaler with a practical form factor
!
I have a question:
What difference, and why, in SQ would there be between the following audio chains:
- PC → USB → digital upscaling with M-Scaler → digital signal → DAC
- digital upscaling with PC → digital signal → DAC ?
Because the M- Scaler upscales and outputs a digital signal, I don't understand how the output upscaled digital signal would differ from the same produced by software running on a fast PC.
Thank you for your excellent work,
bidn
It's about how accurate the system does it; the PC is not capable of reconstruction to anything like the same accuracy that the M scaler is capable of.
Chord Electronics Sinceramente, no sé que pensar.
saludos