tag:blogger.com,1999:blog-4781727111866727703.post7520849036411526043..comments2024-03-28T00:31:13.472-07:00Comments on <em>Archimago's Musings</em>: MEASUREMENTS: RME ADI-2 Pro FS as DAC (Part II - frequency response, noise, distortion and jitter)Archimagohttp://www.blogger.com/profile/08642574001287787545noreply@blogger.comBlogger20125tag:blogger.com,1999:blog-4781727111866727703.post-42717227387128391362019-05-13T17:48:03.823-07:002019-05-13T17:48:03.823-07:00Hi Unknown,
Not much time at present to speak more...Hi Unknown,<br />Not much time at present to speak more of this...<br /><br />But I would suggest reading this:<br />https://hometheaterhifi.com/technical/technical-reviews/audiophiles-guide-quantization-error-dithering-noise-shaping/<br /><br />There's discussion of quantization noise, dithering, etc. Very well done.<br />Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-31657771961034574052019-05-09T21:29:27.650-07:002019-05-09T21:29:27.650-07:00I'm not qualified in any sense with regards to...I'm not qualified in any sense with regards to signal processing or sampling theory, so please forgive me if this question appears ignorant. I have seen people say several times that increase in bit-rate only serves to increase dynamic range, and therefore doesn't make a difference in most music which has a limited dynamic range anyway. But doesn't an increase in bit-rate reduce Nathanhttps://www.blogger.com/profile/04090841536499333719noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-90013495537539544262019-03-07T20:19:12.793-08:002019-03-07T20:19:12.793-08:00Re-did the TEAC XLR 24/192 run.
Yup. Error fixed....Re-did the TEAC XLR 24/192 run.<br /><br />Yup. Error fixed.Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-9934598114099212282019-03-07T11:12:11.672-08:002019-03-07T11:12:11.672-08:00Thanks for the note Jeff,
Good catch. When I have ...Thanks for the note <em>Jeff</em>,<br />Good catch. When I have time I'll have a look at that again. Why the drop in the TEAC UD-501 XLR at 24/192. I suspect if must have been an error as there is no reason for this to happen...<br />Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-45020576118064819672019-03-07T11:08:03.158-08:002019-03-07T11:08:03.158-08:00?? Piopi ??
Which Focusrite Forte measurements??? Piopi ??<br /><br />Which Focusrite Forte measurements?Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-46241033111180903622019-03-06T11:32:38.154-08:002019-03-06T11:32:38.154-08:00Thank you for your awesome testing. I have a quest...Thank you for your awesome testing. I have a question about one of the results, though. In the C. 24/192 chart the teac has a dramatic drop in channel separation with the use of XLR output. Is this an error, or is this something that actually occurs with the Teac? I have a Teac ud-301 dac which appears to be a cheaper version of the 501 but has the same DAC chips, dual mono design etc, so it Jeff Barkleyhttps://www.blogger.com/profile/07359036061529078423noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-86902090654697877932018-10-23T23:57:39.301-07:002018-10-23T23:57:39.301-07:00Where Focusrite Forte? you promised...Where Focusrite Forte? you promised...Anonymoushttps://www.blogger.com/profile/03743936398400022436noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-57095662666886246582018-10-12T00:32:15.926-07:002018-10-12T00:32:15.926-07:00The sinusoid is not a sound signal, and therefore ...The sinusoid is not a sound signal, and therefore does not reflect the behavior of the system under study when playing music. For essentially non-linear systems, the superposition principle is not fulfilled. That is, the response of the system to a complex signal is not equal to the sum of reactions to the components of this signal. That is one harmonic alone. Two sines - already 10 times more YGhttps://www.blogger.com/profile/06195995059970831622noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-47258952763646771612018-10-11T16:39:32.345-07:002018-10-11T16:39:32.345-07:00Ahhh, those Schiit guys :-). Cut to the chase, and...Ahhh, those Schiit guys :-). Cut to the chase, and one of the first to say they won't support MQA... Love it.<br /><br />True, dynamic range measurement in itself is clearly not the differentiator between 16/44 and any other form of high-res, even 24/48 for example.<br /><br />I see the dynamic range (and we're talking true dynamic range as in more dynamic mastering) as simply a <em>proxyArchimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-56366870085417046182018-10-11T15:46:07.033-07:002018-10-11T15:46:07.033-07:00Hi Adova,
Sure, it's possible that things like...Hi Adova,<br />Sure, it's possible that things like the technical measurements don't correlate with perceptual preference. But I'm not sure I've personally experienced this dissociation much. I have not generally felt that NOS sounds better than a sharp filter for example. <br /><br />I have no problem with a general perspective that there are tests that we can run to evaluate Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-38923647369869286072018-10-11T00:06:05.640-07:002018-10-11T00:06:05.640-07:00The problem is aggravated by the lack of understan...The problem is aggravated by the lack of understanding of the nature of jitter and its effect on auditory. For example, in the picture of harmonic distortion, not only absolute numbers are important, but also the order of harmonics. Does it make sense to measure jitter in a digital domain, when clocks are specified in different modes (in one case, this is the receiver, in the other - the YGhttps://www.blogger.com/profile/06195995059970831622noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-43372899108969894762018-10-08T21:39:57.685-07:002018-10-08T21:39:57.685-07:00Hi Archimago.
As always nice article. We can conc...Hi Archimago.<br /><br />As always nice article. We can conclude more and more that the digital part (and even analog part) of our systems aren't the weak point (just remembered that Innerfidelity recently made an interview with Jason Stoddard, and he makes this point very clear, stating that the major problem in an audio system is the speakers, not amplifiers, and much less dac's). BTW, VKhttps://www.blogger.com/profile/05287837050338339500noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-59676578854079981202018-10-08T21:21:13.401-07:002018-10-08T21:21:13.401-07:00Jesus, i don't know how many times i contacted...Jesus, i don't know how many times i contacted the labels asking for the missing PDF booklet. Warner music: never answered. Decca and Deutsche Grammophon (or Universal music, if you prefer): never answered. +90% of the music i buy is classical, so booklets with details about the music, composer, artists, conductor, orchestra and technical recording details are fundamental to me!<br /><br />MyVKhttps://www.blogger.com/profile/05287837050338339500noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-42403500492202079982018-10-08T11:26:43.672-07:002018-10-08T11:26:43.672-07:00Yeah Hal,
Agreed. Sucks. At around $50 on HDtracks...Yeah Hal,<br />Agreed. Sucks. At around $50 on HDtracks, should at least have a few PDF pages!<br /><br />"Mr./Ms./Mrs. Recordperson, can you spare a PDF???"Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-42236801144454387052018-10-08T10:32:38.268-07:002018-10-08T10:32:38.268-07:00Hi tnargs,
Thanks for the note and I agree that we...Hi tnargs,<br />Thanks for the note and I agree that we can't put too much faith in the TTDR values only. Note that the DR Database results were not submitted by myself.<br /><br />What I can say though is that the 24-bit version is clearly different and sounds IMO better; just turn up the volume on a good sound system! Especially for live material which I've always preferred a more Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-63671127735864378562018-10-08T09:43:53.956-07:002018-10-08T09:43:53.956-07:00Hi guys,
Yeah, I haven't seen a test that spat...Hi guys,<br />Yeah, I haven't seen a test that spat out a number since the days when Stereophile used the Miller Audio test. The problem with a number is that it doesn't necessarily capture audibility. Maybe some composite number measuring the jitter sideband peaks and scaling them to distance away from the fundamental might help?<br />Archimagohttps://www.blogger.com/profile/08642574001287787545noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-49697282313783110312018-10-07T17:38:22.293-07:002018-10-07T17:38:22.293-07:00Thanks for the apt comments on the improved DR of ...Thanks for the apt comments on the improved DR of the 24/96 American Treasure Deluxe. Excellent. But I've still gotta gripe that this many years into the hi-res era, you don't get a scrap of box set art or liner notes for your audiophile premium dollars — no PDF, no nothing. Hal Espenhttps://www.blogger.com/profile/08814217088173209717noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-79515353500508775372018-10-07T17:27:51.307-07:002018-10-07T17:27:51.307-07:00Hi, thanks for your latest blog post from one avid...Hi, thanks for your latest blog post from one avid reader. <br /><br />I just want to comment on the last 2 paragraphs. I see that you apparently have faith in the TTDR tool. I was hoping that my previous warning(s) and debunking of that tool had put you off it. Or at least given you pause before posting online to share what you learned from it about versions of an album. <br /><br />The problem tnargshttps://www.blogger.com/profile/04937893575268508575noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-58839007735190457532018-10-07T04:03:46.388-07:002018-10-07T04:03:46.388-07:00If you find one please post it here. I've neve...If you find one please post it here. I've never found one myself.Techlandhttps://www.blogger.com/profile/00511548486704836818noreply@blogger.comtag:blogger.com,1999:blog-4781727111866727703.post-63528959695164655582018-10-07T02:52:13.189-07:002018-10-07T02:52:13.189-07:00congrats, i'm owner of adi-2 too
now i try to...congrats, i'm owner of adi-2 too <br />now i try to find some fair jitter measurment tool with digit value not only spectrum viewYGhttps://www.blogger.com/profile/06195995059970831622noreply@blogger.com