Vivaldi upsampler's future

[Phil (Phil Harris)]

@keiserrg

I’m slightly embarrassed to admit that I have misunderstood this all these years. I thought upsampling enabled the interpolation and playback of data points that were not in the original recording, and that the quality of the algorithms used in the upsampling would therefore impact the amount and accuracy of information “added back” and played.

One should never be sorry or embarrassed for asking questions and thinking about the answers … that’s the best thing in the world!

If you want a bit more info have a read of these…

Why need to upsample?

You think these are commercial reasons? Perhaps you are right, I have not thought about it. But still would like to find out from DCS if it is technically possible to switch oversampling off.

dCS Ring DAC - A Technical Explanation

By no means am I an expert on the maths behind this, however… The more appropriate way to describe the modulation stage would be as a “noiseshaper”, as the audio community is pretty firm on the definition of delta-sigma modulation with one specific implementation. That said, the key aspect to consider is that even with DSD running at the same rate as the Ring DAC with only 1 bit, you get close to 24-bit performance. We are working with a much greater word length here, and while it really isn’…

…James has been a busy bee over the last three years writing up notes on what we do and why which makes my life much easier (Thanks James! ).

Phil