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Mike Rubin

Upsampling

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I have been purchasing hi-res tracks from sites on the web and, of course, have seen that, at some of the sites, the price goes up as the resolution increases.  I always have assumed that the pricing is intended to exploit the consumer's expectation that higher resolution equates with better sound, but I suppose it's possible that there's more work in bringing the higher res files to market.

 

I recently realized that my dbPowerAmp Converter can upsample all the way up to 384khz just by my pressing a button.  

 

So that begs the question of whether the hi-res sellers are doing something substantial to create these variously-priced versions of the same titles or just running the same sources through upsampling software like I can do at my home computer.  I am not so cynical as to assume the worst, but am genuinely curious about how commercial hi-res files are created.  What do the sellers do that we can't do at home with a CD quality source and upsampling software?


Living room:  Synology 218+ NAS > NUC 10 i7> Roon/Audirvana/JRiver Media Server > ASUS AC-87R Router > Netgear GS348 Switch > EtherRegen > Sonore Signature Rendu SE Tier 2 > Wyred4Sound 10th Anniversary DAC > Wyred4Sound STI-500 > Revel F32 Concertas

 

Basement:  Synology 218+ NAS > NUC 10 i7>Roon/Audirvana/JRiver Media Server > ASUS AC-87R Router > Netgear GS348 Switch >TrendNet FMC>Sonore OpticalModule> UltraRendu > NuPrime IDA-8 > KEF LS50's

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Thank you very much.  That's exactly what I was seeking. 

 

I couldn't agree more that the original source is the primary determinant of sound quality, but I do hear differences between the same files when resolution increases.  Often, however, that seems most affected by volume level differences between the two versions under comparison.  Are those differences improvements?  I can't tell without doing more analytical listening, really, and it is too much work to try to live on the differences that seem apparent on casual listening. 

 

It probably is a topic for another day, but I have had consistently good sound from DSD files.  Part of that is self-fulfilling, because I tend to buy in DSD format stuff that I already own that has decent sound, but newer native DSD files routinely have sounded great.  However, they tend to present pedestrian music by unknown artists and I wouldn't want too steady a diet of that stuff for listening rather than system evaluation. 

 

 


Living room:  Synology 218+ NAS > NUC 10 i7> Roon/Audirvana/JRiver Media Server > ASUS AC-87R Router > Netgear GS348 Switch > EtherRegen > Sonore Signature Rendu SE Tier 2 > Wyred4Sound 10th Anniversary DAC > Wyred4Sound STI-500 > Revel F32 Concertas

 

Basement:  Synology 218+ NAS > NUC 10 i7>Roon/Audirvana/JRiver Media Server > ASUS AC-87R Router > Netgear GS348 Switch >TrendNet FMC>Sonore OpticalModule> UltraRendu > NuPrime IDA-8 > KEF LS50's

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51 minutes ago, Mike Rubin said:

 

 

It probably is a topic for another day, but I have had consistently good sound from DSD files.  Part of that is self-fulfilling, because I tend to buy in DSD format stuff that I already own that has decent sound, but newer native DSD files routinely have sounded great.  However, they tend to present pedestrian music by unknown artists and I wouldn't want too steady a diet of that stuff for listening rather than system evaluation. 

 

 

 The people who record in DSD are almost certainly going to be more oriented towards making a good recording than most others. 


Main listening (small home office):

Main setup: Surge protector +_iFi  AC iPurifiers >Isol-8 Mini sub Axis Power Conditioning+Isolation>QuietPC Low Noise Server>Roon (Audiolense DRC)>RPi4 (dietpi)>Kii Control>Kii Three >GIK Room Treatments.

Secondary Listening: Server>Matrix Element i Streamer/DAC (XLR)>Schiit Freya>Kii Three .

Bedroom: SBTouch to Cambridge Soundworks Desktop Setup. Living Room/Kitchen: RPi 3B+ running RoPieee to a pair of Morel Hogtalare. 

All absolute statements about audio are false :)

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With Chord Dac, I was advised to not use software up sampling; let the DAC do its work as the original file is the important element. 

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On 5/13/2019 at 6:57 PM, Mike Rubin said:

... I couldn't agree more that the original source is the primary determinant of sound quality, but I do hear differences between the same files when resolution increases.  Often, however, that seems most affected by volume level differences between the two versions under comparison...

 

Volume level doesn't change in simple bit depth or sample rate conversion. If you are doing the conversion yourself, then you are doing something wrong. If there is a difference in volume level between two versions of the same album that are supposed to differ in sample rate/bit-depth only, then someone is lying.

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