mansr Posted November 23, 2019 Share Posted November 23, 2019 15 hours ago, STC said: My normal usage for playing stereo is usually around 5%. And going full convolution DSP it would hit 100%. Except for some drop outs at 100% I do not hear any difference to the sound quality. As it should be. An audible difference would be indicative of a pretty bad noise leak. Link to comment
mansr Posted November 24, 2019 Share Posted November 24, 2019 45 minutes ago, STC said: I cannot comment on this because I do not know how the system actually works. Technically, digital data streams serially so a SPDIF output would have a sample delay between the left and right. That is incorrect. Although the left and right channel samples are interleaved, the receiver buffers the data and does the A/D conversion simultaneously. The early Sony CD players did have a half-sample delay between the channels, but that's ancient history. Also, the 12 μs difference is inaudible. Moving your head 4 mm makes a bigger difference. Link to comment
mansr Posted November 24, 2019 Share Posted November 24, 2019 14 minutes ago, STC said: 12μs can be audible. Maybe, under some carefully controlled conditions. If one channel has a constant 12 μs delay, it is equivalent to the listener being 4 mm closer to one speaker. That's not a problem unless you are this guy: 18 minutes ago, STC said: BTW, how did you get half a sample delay? Those early CD players had a single DAC serving both channels. Link to comment
mansr Posted November 24, 2019 Share Posted November 24, 2019 8 hours ago, STC said: Humans use ITD from as little as 10μs to 600 or 700μs. If the delay is constant ( and it could be true) then it is possible that the center image to be slightly off centered. That probably explains why every audiophile would have noticed that getting center image is always inconsistent. So what carefully controlled condition you are talking about? Did you not see the illustration I included? A constant 12 μs delay in one channel is equivalent to sitting about 4 mm off centre. You'd need to clamp your head in a vice to maintain your position that accurately. botrytis 1 Link to comment
mansr Posted November 24, 2019 Share Posted November 24, 2019 8 hours ago, STC said: You may have just unraveled a mystery that has been bugging me for three years. How about the the small USB DACs. They come with single DAC. Audioquest Dragonfly? Every modern audio DAC chip has at least two independent channels. The incoming serial data is buffered and released to the conversion stages simultaneously. The only audio devices I'm aware of with the channel offset are the first generation of Sony CD players. Their DAC chip had only a single D/A conversion stage that alternated between the channels. Philips used two TDA1540 chips in their early models, later switching to the TDA1541 which has two channels. STC 1 Link to comment
mansr Posted November 24, 2019 Share Posted November 24, 2019 1 minute ago, STC said: That is where I am still looking for an answer to find out why the delay doesn’t tally with the calculation. Which calculation? Link to comment
Popular Post mansr Posted November 24, 2019 Popular Post Share Posted November 24, 2019 3 minutes ago, pkane2001 said: So I'll try to reproduce your 'blinking cursor' result. But from past experience, this will not be easy. Maybe I can find a DAC or two where the CPU load does affect the output. I'll give it a shot. If you do, you should probably send that DAC to the scrapheap. pkane2001 and botrytis 2 Link to comment
Popular Post mansr Posted November 24, 2019 Popular Post Share Posted November 24, 2019 9 minutes ago, sandyk said: Your personal experience is no more valid than anyone else's personal experience. Nor any less. Teresa and botrytis 2 Link to comment
mansr Posted November 25, 2019 Share Posted November 25, 2019 1 minute ago, pkane2001 said: Of course, this could be that my specific DACs/ADCs are immune. As an example, Peter’s Lush^2 USB cable actually made an obvious difference with an older Emotiva DAC, but not with any of the others I’ve tried, including a $50 Behringer USB interface. I thought Emotiva was better than that. What kind of difference did it make? Link to comment
Popular Post mansr Posted November 25, 2019 Popular Post Share Posted November 25, 2019 11 minutes ago, marce said: Analogue or digital cables? Analogue - resistance, capacitance, inductance... Digital - characteristic impedance Shielding could be an issue if not done correctly... Have I missed anything Colour/pattern of the outer sleeve. Presence of "quantum" in product name. Price. Sonicularity, daverich4 and marce 3 Link to comment
Popular Post mansr Posted November 26, 2019 Popular Post Share Posted November 26, 2019 7 hours ago, sandyk said: I want nothing further to with what has now become a very nasty thread So why did you ruin it? Yes, YOU. Once again, you've utterly derailed a perfectly sensible thread to make it all about you and your imagined nonsense all the while belittling and ridiculing everybody who disagrees. I don't often say such things, but I really think you ought to be banned. You are a nuisance, and you are driving people away from the forum. Pretty please, just take a break. How about 6 months to begin with? kumakuma, Ralf11 and marce 2 1 Link to comment
mansr Posted November 26, 2019 Share Posted November 26, 2019 2 minutes ago, Blackmorec said: You mean like wine is just some grape juice and a bit of fungus? Do you have any idea how much science is involved in modern winemaking? Ralf11 1 Link to comment
Popular Post mansr Posted November 26, 2019 Popular Post Share Posted November 26, 2019 10 minutes ago, Blackmorec said: Some highly acclaimed footers that weren’t a good match for my power supply That's the funniest thing I've read all week. daverich4 and esldude 2 Link to comment
mansr Posted November 27, 2019 Share Posted November 27, 2019 10 hours ago, STC said: 10 hours ago, davide256 said: by definition a security scan uses significant system resource and lots of hard drive activity. Neither of these is good for music playback in any OS Why? Any evidence? A full virus scan of Windows does a lot of hard drive thrashing and generally bogs down the system. I wouldn't be surprised if audio playback suffered from stuttering while the scan is running. Now why would anyone run a full virus scan while playing music? Teresa 1 Link to comment
mansr Posted November 27, 2019 Share Posted November 27, 2019 21 minutes ago, STC said: Notwithstanding stuttering, I don’t hear any difference in SQ as long as the COU is below 100%. But My application is bit different because I use the PC to send the data to the DAC with 3 seconds delay. That's probably enough to handle even the most extreme latency spikes. Link to comment
Popular Post mansr Posted November 27, 2019 Popular Post Share Posted November 27, 2019 1 hour ago, Blackmorec said: Regarding hearsay. I’ve heard these changes so for me its not hearsay. You say you hear it. We hear you say it. That makes it hearsay. Teresa, daverich4 and marce 3 Link to comment
Popular Post mansr Posted November 28, 2019 Popular Post Share Posted November 28, 2019 Sonicularity and marce 2 Link to comment
mansr Posted November 29, 2019 Share Posted November 29, 2019 19 minutes ago, The Computer Audiophile said: I don’t understand why those who don’t agree with conversations in which it’s clear their opinion isn’t wanted, must thrust it on everyone. I don't understand Alex either. Ralf11 and daverich4 1 1 Link to comment
Popular Post mansr Posted November 30, 2019 Popular Post Share Posted November 30, 2019 On 11/26/2019 at 12:55 AM, sandyk said: This thread has become rather nasty, and I will be taking no further part in it. Four days and six pages later, why are you still here? kumakuma and Ralf11 1 1 Link to comment
mansr Posted November 30, 2019 Share Posted November 30, 2019 Just now, kumakuma said: Threads on this site come in all colors and varieties. There are even a few here that you haven't disrupted yet with your ill-tempered posts... There are only so many hours in a day. kumakuma 1 Link to comment
mansr Posted December 2, 2019 Share Posted December 2, 2019 2 hours ago, sandyk said: I don't find anything humorous in posts like that, knowing how you and several other closed minded participants in this thread, and other threads in the General Forum area really feel about virtually all of my posts in this forum. There's an easy way for you to change that. Link to comment
mansr Posted December 2, 2019 Share Posted December 2, 2019 1 hour ago, Blackmorec said: Which known laws of physics are violated and how? The gravitational force The electromagnetic force The strong nuclear force The weak nuclear force Teresa 1 Link to comment
mansr Posted December 3, 2019 Share Posted December 3, 2019 15 minutes ago, STC said: Maybe this is not relevant but I have seen many people make the mistake when the replace the US to UK plugs. The live wire should go to the neutral. Take a volt meter and measure the voltage from the chassis to ground to check whether you have properly wired them. The Schuko plug is symmetrical, and equipment is expected to work whichever way it happens to get plugged in. Nevertheless, a hum problem can occasionally be resolved by flipping one or more plugs around. esldude 1 Link to comment
mansr Posted December 3, 2019 Share Posted December 3, 2019 3 minutes ago, Richard Dale said: Blackmorec actually said he was a scientist. He said a lot of things, though that one may be the least believable. Ralf11 1 Link to comment
Popular Post mansr Posted December 3, 2019 Popular Post Share Posted December 3, 2019 1 minute ago, Richard Dale said: There are plenty of other domain experts who manage to contribute to this site without being rude. There are also plenty of non-experts who manage to accept advice without being rude. Teresa, STC and askat1988 2 1 Link to comment
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