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Offline Upsampling


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I have a thought but no time - will write later tonight.

 

...or, as it happens, the next day.

 

So Yuri, this is my idea, which I think could be fun and educational, but may be a lot of work for you.

 

You could make three builds as public demos, and simply call them A, B, and C. One would be the same as the current AuI; one the intermediate option; and one full band. Don't identify which is which. (Of course it will be easy to tell if anyone wants to measure.)

 

Whoever wants to play along would tell you what DAC they have; what the original and upsampled resolutions were of a couple of tracks they listened to, at least one from 44.1x resolutions and one from 48x; which build they preferred; and how strong the preference was (whether they liked one much better or all were close).

 

That is the general outline. What do you think - interesting, or too much work?

One never knows, do one? - Fats Waller

The fairest thing we can experience is the mysterious. It is the fundamental emotion which stands at the cradle of true art and true science. - Einstein

Computer, Audirvana -> wi-fi to router -> EtherREGEN -> microRendu -> USPCB -> ISO Regen (powered by LPS-1) -> USPCB -> Pro-Ject Pre Box S2 DAC -> Spectral DMC-12 & DMA-150 -> Vandersteen 3A Signature.

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...or, as it happens, the next day.

 

So Yuri, this is my idea, which I think could be fun and educational, but may be a lot of work for you.

 

You could make three builds as public demos, and simply call them A, B, and C. One would be the same as the current AuI; one the intermediate option; and one full band. Don't identify which is which. (Of course it will be easy to tell if anyone wants to measure.)

 

Whoever wants to play along would tell you what DAC they have; what the original and upsampled resolutions were of a couple of tracks they listened to, at least one from 44.1x resolutions and one from 48x; which build they preferred; and how strong the preference was (whether they liked one much better or all were close).

 

That is the general outline. What do you think - interesting, or too much work?

 

Hi Jud,

 

Cool idea. I suppose it can be released.

 

Of course, need at first release all modes.

 

P.S. Measurements can influence to ears :) Here we do "worse" for better sound.

 

Best regards,

Yuri

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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New AuI ConverteR 48x44 v.4.3.2. Compressed DFF decoder linking ability New AuI ConverteR 48x44 v.4.3.2. Compressed DFF decoder linking ability

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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Released new high resolution audio file format converter AuI ConverteR 48x44 v. 4.3.8 DFF, DSF, ISO, WAV, FLAC, AIFF, ALAC:

- Supported FLAC metadata editor.

- For AIFF audio files was iTunes audio player incompability by showing artwork.

- Now no need any action by user for switch on DST compressed ISO compability.

New AuI ConverteR 48x44 v.4.3.8. Fixed Trouble iTunes AIFF Metadata Compability

 

new-aui-converter-v-4.3.8.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 3 weeks later...

Released new high resolution audio file format converter AuI ConverteR 48x44 v. 4.3.11 DFF, DSF, ISO, WAV, FLAC, AIFF, ALAC. Fixed bug of CD ripping.

new-aui-converter-v-4.3.11.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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For the past week or two I have been beta testing offline sample rate conversion software, Audiophile Inventory (AuI) ConverteR 48x44...

What algos are available to upsample?

mini+Roon > dCS Rossini DAC + Rossini Master Clock >

Audio Note Kondo Ongaku > Avantgarde Duo Mezzo G2

system pics

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Hi Miguelito,

 

AuI ConverteR use only own conversion algorithms:

 

alphaC - resampling/optimizing for DAC

 

alphaD - dithering

 

alphaS - sigma-delta modulation/demodulation.

 

trueG - seamless album resampling (True Gapless Conversion).

 

Best regards,

Yuri

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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AuI ConverteR is not simple sample rate converter. But it is sound optimizer for digital-analog converter.

 

In version 4.3.15 applied traditional high definition sample rate conversion mode too. Now possible select one of these modes.

 

DSF filters don't modified.

 

New AuI ConverteR 48x44 v.4.3.15. Traditional Sample Rate Conversion Mode | Audiophile Inventory

 

new-aui-converter-v-4.3.15.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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New AuI ConverteR 48x44 v.4.3.19. Fixed some troubles of launching coders decoders

 

New AuI ConverteR 48x44 v.4.3.19. Fixed some troubles coders decoders

 

new-aui-converter-v-4.3.19.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 2 weeks later...

What is DSD decoder inside DSD Decoder for Audio

 

 

dsd-decoder.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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New AuI ConverteR 48x44 v.4.4. Supported some non-standard AIFF New AuI ConverteR 48x44 v.4.4. Supported some non-standard AIFF | Audiophile Inventory

 

new-aui-converter-v-4.4.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 4 weeks later...

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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There are some tricks of convertion high resolution 1-bit audio disk image ISO to DSF, WAV, FLAC, AIFF, ... files for achieving better result. Here described instructions for converting ISO without clicks via AuI ConverteR 48x44.

How convert ISO to DSF WAV FLAC AIFF without clicks. User manual

 

iso-dsf-flac-wav-aiff-conversion.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 3 weeks later...

New AuI ConverteR 48x44 v.4.6. Improved clickless technologies

 

Some track can have non-zero level at begin and end.

 

Smooth DC functionality intended for supressing clicks and begin and end of track.

 

Smooth DC is loudness management: fade in/out at begin/end of track.

 

Smooth DC in version 4.6 have advanced form of loudness management curve that provide more gentle connect tracks that have non-zero levels at borders.

 

New AuI ConverteR 48x44 v.4.6. Improved clickless technologies | Audiophile Inventory

 

 

new-aui-converter-ver-4-6.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 1 month later...

New AuI ConverteR 48x44 v.4.7. Fixed troubles of non-standard FLAC metadata New AuI ConverteR 48x44 v.4.6. Fixed troubles of non-standard FLAC metadata

new-aui-converter-v-4.7.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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New AuI ConverteR 48x44 v.5 (2016) released New AuI ConverteR 48x44 v.5 (2016) released

New features:

 

for PROduce-RD

1. Support PCM sample rates 705/768 kHz,

2. Peak level normalizing (general for each album or total for all converted files),

 

Soon planned tutorial video about peak level normalizing.

 

for all editions

3. Optimization of internal structure for future improvements.

 

new-aui-converter-v-5.0.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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Tutorial article and video: How Maximize Loudness Audio File and Avoid Overload How Maximize Loudness Audio File and Avoid Overload

 

how-maximize-loudness.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 3 weeks later...

Improved CD metadata access New AuI ConverteR 48x44 v.5.2. Improved CD metadata access

 

Advantages (comparing previous versions):

 

1. Under Window: faster access.

 

2. Under Mac OS X: more full metadata content (now album, artist, year, track name, track num).

 

new-aui-converter-v-5.2.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 3 weeks later...

New AuI ConverteR 48x44 v.5.3.5. AIFF metadata editor with artwork capability New AuI ConverteR 48x44 v.5.3.5. AIFF metadata editor

 

new-aui-converter-v-5.3.5.png

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 1 month later...

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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How Faster Extract ISO Audio File. Tips and tricks How Faster Extract ISO Audio File

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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  • 3 weeks later...

Sense of upsampling defined by analog filter of DAC.

 

The analog filter is essential part of any type of DAC.

 

During upsampling performed digital filtration. It eliminate part of aliases of digital-analog conversion in low frequency range.

 

Digital filter better than analog usually.

 

Upsampling fit digital signal to available for us analog filter. Analog filter suppress aliases at higher frequencies range. In range where it have better suppressing level.

 

Quality of the analog filter depend on certain implementation.

 

Delta sigma modulator+analog filter will work better, if feed the modulator by upsampled and properly (digital) filtered signal. Due less aliases will placed in lower part of spectrum where analog filter is not so good.

AuI ConverteR 48x44 - HD audio converter/optimizer for DAC of high resolution files

ISO, DSF, DFF (1-bit/D64/128/256/512/1024), wav, flac, aiff, alac,  safe CD ripper to PCM/DSF,

Seamless Album Conversion, AIFF, WAV, FLAC, DSF metadata editor, Mac & Windows
Offline conversion save energy and nature

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Hi everyone,

 

I bought a licence of Aul ConverteR to upsample to 24/192 my music library which is sitting on a Mac.

I have found the software less polished than expected in the following fields :

- the interface is a little bit rough and the translation into English not refined at all

- even if you do not dedicate all the processors you have on the Mac (I am using an old hexa-processors, which gives me 24 cores, of which I am using only 16 dedicated to the upsampling), the interface is not responsive while working, which prevents from easily interrupting the process for instance...

- the software fails to preserve the integrity of metadata of AIFF files on the mac ; especially, the file image is scrapped :-(

- when going through a directory which includes other files, like a PDF file (electronic leaflet of the CD) or a JPEG file (album artwork), we could expect the application to copy those files to the destination directory to produce a complete upsampled image of the source ; this is not the case

- the directory output seems buggy, which makes the destination directory replicate the information of the directory name ('/Volumes/Macintosh HD/Users/xxx/Music/Volumes/Macintosh HD/Users/xxx/Music/XLD/....'

 

Now a few questions about the optimal settings :

- is it useful to select the no-pre-ringing digital signal processing

- what are the best settings which would apply to an entire music library, without having to dig into each directory to retrieve the sampling information and adapt the settings to each CD or purchased electronic music.

 

Thanks in advance.

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