miguelito Posted March 2, 2018 Share Posted March 2, 2018 Trying to figure out if Audirvana will upsample a first-unfolded MQA stream. Say I choose "No MQA Device" in Audirvana preferences, and I turn off upsampling as well. In this case, Audirvana will first-unfold a 24/48 MQA file into a 24/96 stream. It will also not add the relevant tagging for rendering - I know this because with this setting my Dragonfly Red does not show a purple light, it shows a pink light (ie standard 24/96 PCM stream) (*) The key question: If in this setup I turn on upsampling (and use a higher rate DAC as Dragonfly is limited to 96KHz), will it upsample the first-unfolded signal or will it switch off first-unfold and upsample the raw 24/48 MQA stream? (*) I am well aware that to get rendering in the Dragonfly I need to set the device to "MQA Renderer Device" or let it detect it automatically. This is NOT the question I am asking so please don't answer that. NUC10i7 + Roon ROCK > dCS Rossini APEX DAC + dCS Rossini Master Clock SME 20/3 + SME V + Dynavector XV-1s or ANUK IO Gold > vdH The Grail or Kondo KSL-SFz + ANK L3 Phono Audio Note Kondo Ongaku > Avantgarde Duo Mezzo Signal cables: Kondo Silver, Crystal Cable phono Power cables: Kondo, Shunyata, van den Hul system pics Link to comment
miguelito Posted March 2, 2018 Author Share Posted March 2, 2018 Oh cmon... Someone must know the answer to this! NUC10i7 + Roon ROCK > dCS Rossini APEX DAC + dCS Rossini Master Clock SME 20/3 + SME V + Dynavector XV-1s or ANUK IO Gold > vdH The Grail or Kondo KSL-SFz + ANK L3 Phono Audio Note Kondo Ongaku > Avantgarde Duo Mezzo Signal cables: Kondo Silver, Crystal Cable phono Power cables: Kondo, Shunyata, van den Hul system pics Link to comment
asdf1000 Posted March 2, 2018 Share Posted March 2, 2018 6 hours ago, miguelito said: If in this setup I turn on upsampling (and use a higher rate DAC as Dragonfly is limited to 96KHz), will it upsample the first-unfolded signal or will it switch off first-unfold and upsample the raw 24/48 MQA stream? @mansr do you know if using A+ if upsampling is used when playing an MQA file, is the 1st MQA unfold being upsampled by A+? Or only the original MQA file (with no MQA unfolding done) is upsampled by A+? or @damien78? Link to comment
mansr Posted March 3, 2018 Share Posted March 3, 2018 Sorry, my only involvement with A+ is that wrote the (open source) sigma-delta modulator it uses for upsampling to DSD. I have never seen the source code of A+ and know no more than anyone else about its inner workings. Link to comment
asdf1000 Posted March 3, 2018 Share Posted March 3, 2018 30 minutes ago, mansr said: Sorry, my only involvement with A+ is that wrote the (open source) sigma-delta modulator it uses for upsampling to DSD. I have never seen the source code of A+ and know no more than anyone else about its inner workings. No problem mansr but have you done any MQA analysis when your DSD upsampling modulator is used with an MQA file in A+? Is it a difficult thing to run and verify? I guess we wanted to know if in this case with A+ MQA Ltd has allowed DSP after the 1st unfold... Link to comment
mansr Posted March 3, 2018 Share Posted March 3, 2018 25 minutes ago, Em2016 said: No problem mansr but have you done any MQA analysis when your DSD upsampling modulator is used with an MQA file in A+? I don't even have a Mac, so no. Link to comment
Norton Posted March 3, 2018 Share Posted March 3, 2018 I know nothing about Audirvana, but if, like other upsampling software, it displays source and output formats somewhere and the former shows (e.g.) 24/96, then I'd think it reasonable to presume it was decoding MQA before upsampling. XXHE does so, for example. Link to comment
asdf1000 Posted March 3, 2018 Share Posted March 3, 2018 3 hours ago, Norton said: I know nothing about Audirvana, but if, like other upsampling software, it displays source and output formats somewhere and the former shows (e.g.) 24/96, then I'd think it reasonable to presume it was decoding MQA before upsampling. Respectfully, unfortunately you need to use A+ to see/know that this info that's asked by the OP isn't explicitly available, hence the question to Damien (the developer) for clarification. In case you're wondering... does A+ tell you the final output sample rate after upsampling? Yes. Does A+ tell you it's an MQA file being upsampled? Yes. But this isn't what's being asked. The question is, is A+ upsampling the MQA file after the 1st unfold. Link to comment
asdf1000 Posted March 8, 2018 Share Posted March 8, 2018 On 03/03/2018 at 10:28 PM, Em2016 said: The question is, is A+ upsampling the MQA file AFTER the 1st unfold. @damien78 ? Can you help. Link to comment
Popular Post damien78 Posted March 8, 2018 Popular Post Share Posted March 8, 2018 With a MQA DAC connected, there is no audio processing to keep the MQA signal unaltered so it is detected by the MQA DAC. With a non MQA DAC, all the audio processing is available, and the order is: Load and decode file => MQA unfold => upsampling (if enabled) => audio units (if enabled) => volume control (if enabled) Bill Brown, miguelito and buonassi 1 1 1 MBP 15"/Mac Mini, Audirvana Plus, Audioquest Diamond USB, AMR DP-777, exD DSD DAC (for DSD), Pioneer N-70AE, Audioquest Niagara balanced/Viard Audio Design Silver HD, Accuphase E-560, Cabasse Sumatra MT420 Link to comment
OldBigEars Posted March 12, 2018 Share Posted March 12, 2018 On 3/8/2018 at 10:53 AM, damien78 said: With a MQA DAC connected, there is no audio processing to keep the MQA signal unaltered so it is detected by the MQA DAC. With a non MQA DAC, all the audio processing is available, and the order is: Load and decode file => MQA unfold => upsampling (if enabled) => audio units (if enabled) => volume control (if enabled) On 3/8/2018 at 10:53 AM, damien78 said: Damien, Sorry to say the language on your app confuses me. I have a non-MQA DAC but wish to enable MQA via A+ Here's my set up on Audio System: - Auto-detect MQA device - checked - No MQA device detected - MQA Renderer device selected Have I set this up right? Thanks for confirming Tidal / Qobuz--> Roon--> Fios Gigabit--> Netgear Prosafe GS105 --> Supra 8-->EtherRegen --> Fiber--> opticalRendu / CI Audio LPS --> Curious Evolved Link --> Chord Qutest--> AQ Water --> Belles Aria Integrated--> AQ Robin Hood--> Kudos Super 20's Link to comment
damien78 Posted March 13, 2018 Share Posted March 13, 2018 Device set to MQA Decoder = no audio processing done in Audirvana Plus, as the DAC is doing all of the MQA decoding Device set to MQA Renderer = MQA first unfolding done in Audirvana Plus, and no other audio processing as the DAC is doing the other unfoldings So unless you have a DAC that IS a MQA decoder/renderer, you'll leave this setting to Not MQA device. MBP 15"/Mac Mini, Audirvana Plus, Audioquest Diamond USB, AMR DP-777, exD DSD DAC (for DSD), Pioneer N-70AE, Audioquest Niagara balanced/Viard Audio Design Silver HD, Accuphase E-560, Cabasse Sumatra MT420 Link to comment
OldBigEars Posted March 14, 2018 Share Posted March 14, 2018 Thanks ! Tidal / Qobuz--> Roon--> Fios Gigabit--> Netgear Prosafe GS105 --> Supra 8-->EtherRegen --> Fiber--> opticalRendu / CI Audio LPS --> Curious Evolved Link --> Chord Qutest--> AQ Water --> Belles Aria Integrated--> AQ Robin Hood--> Kudos Super 20's Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now