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In Reply to: RE: Rush "A Farewell to Kings" posted by Mr_Steady on September 06, 2015 at 08:45:51
This is the Xivero MusicScope analysis of the track Xanadu. An eleven minute song. I tested two songs from the album, and they were very close in results.Maybe before I give the numbers we should discuss what is optimal. Xivero states on their site that a true high quality transfer from a reel to reel tape to a 24/192 ADC would result in a file that would be described as 18/144. I guess that means that is the best the R2R can give you?
This Rush digital album is a true hi-res file. It tests at 18/108kHz. Not what I expected, but not a scam either. It qualifies as a 24/192 file. The green spectrograph clearly shows information past the cutoff, all the way out to the low 90's, which is a 180kKz sample.
There is no evidence of clipping in the audible band. The True Peak Level is good, and the Crest Factor number is acceptable for a hi-res file.
This song has a whopping 18db of dynamic range, and the other test showed 15db. So far I have found only 1 in 10 rock hi-res files have this kind of DR. It's probably one reason this album sounds so good. To me it let's the music "breathe." In fact my solution to the whole download hi-rez problem is they should mark some files as "audiophile," and those you know have a good DR. They can sell the lower res stuff dynamically compressed.
Overall I think this album/file sounds very, very good.
These results brought one thing to mind. Anybody using something like an Audio Note DAC4something could make good use of this file. If that type of ladder dac can only output 18/96, well then it would only be throwing away 12kHz of sample rate. Nothing else. I think that's very interesting. We'll see how other tests work out, and what other albums are like.
Edit: The red line in the spectrograph does indicate an error, and suggests visual inspection. I think it could be argued that this is an 18/120 file. I mention this because that would mean throwing away 24kHz of bandwidth if you are using an 18/96 dac. I bet 24kHz works out to a great many samples per second. I wouldn't be so cavalier about throwing away 24 as I was 12.
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Big speakers and little amps blew my mind!
Edits: 09/20/15 09/20/15Follow Ups:
Please excuse my ignorance: Where is the DR indicated in the picture. May be itīs the "Loudness Range"?
Thanks,
Joaquin
Joaqu
Yes the Loudness Range is the dynamic range. On the graphs it is marked as LRA.
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Big speakers and little amps blew my mind!
Readable numbers;
Report generated by the MusicScope 1.3.14 - www.xivero.com
File: 02 - Xanadu.flac
Audio format: PCM
Bit depth: 24 bit
Sample rate: 192.0 kHz
Cut-Off Frequency: 54.1 kHz
TPL Left: -0.7 dB
TPL Right: -1.5 dB
TPL Mid: -2.4 dB
TPL Side: -8.2 dB
RMS Left: -18.6 dB
RMS Right: -19.9 dB
RMS Mid: -20.1 dB
RMS Side: -26.4 dB
CREST Avg.: 9.8 dB
IS L/M: 0
IS R/S: 0
Max. M-Loudness: -10.1 dB
Max. S-Loudness: -10.9 dB
Integrated Loudness: -15.2 dB
Loudness Range: 17.9 dB
PLR Avg.: 7.9 dB
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Big speakers and little amps blew my mind!
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