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Ultimate Audio Playback / Your questions about the PC -> DAC route / Re: PCI soundcards
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on: June 13, 2010, 03:40:07 pm
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I just wanted to say that Cantatis released new drivers for Overture sound card. I'm sitting jawdropped. You may ask why? I'll tell you. So far, I haven't been able to go below 1024 samples in adaptive mode and now I'm playing at 32 samples and Q1=-4 with QAP - no clicks Why am I writing this? To confirm my previous hypothesis, that drivers' performance is the most important thing when it comes to low latency playback. Of course, Peter knew that before
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332
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Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: SQ of 0.9z-1
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on: June 12, 2010, 04:12:48 pm
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I don't know Peter, what difference would it make if I only have one core available? The question was a little different (please reread) and about the simulation of one core, instead of tweaking the PC (bios) so. Do notice that you'll always be happier with more cores at the preprocessing stuff. So ... during playback all must think there is one core only, and I can do that with a new Appointment Scheme. BUT, it won't be a hardware solution, and for sure no Undervolt solution. That is how I asked the question ... Yes, I know what you mean, but the difference is in power consumption of CPU and noise/ripple related to number of cores active (hardware). But who knows, maybe a special scheme for one core would bring some further improvements. while listening to hirez tracks with quad arc predicion. As in : 192 x 4, right ? Hahaha, show me. I can show you though. I meant 24/48 files
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333
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Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: SQ of 0.9z-1
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on: June 12, 2010, 03:09:36 pm
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I don't know Peter, what difference would it make if I only have one core available? :D And no, I don't have any problems with ticks and pops, I only have to choose Low/Realtime priority for hi-rez files. I prefer High thread priority, I think that the sound is fuller this way. Split size at 75 MB. Of course, my PC is hardly usable while listening to hirez tracks with quad arc predicion. My cursor freezes every 30 seconds or so, but no ticks Any plans on improving memory management? You wrote that it's impossible to load the whole album into memory. Isn't that Engine3 "stability issue"? Anyway, like you wrote in other topic, the bar is so high right now...
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334
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Ultimate Audio Playback / Your thoughts about the Sound Quality / Re: SQ of 0.9z-1
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on: June 12, 2010, 12:51:33 pm
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Mani, underclock/undervolt your CPU as much as possible and run it on a single core! In my system there is a huge difference between one and two cores (voltages, clocks and other setting are the same). On a single core I can pump up the volume to the limits, while on 2 cores I can barely stand the sound at 11 o'clock.
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340
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Ultimate Audio Playback / Phasure NOS1 DAC / Re: World's first NOS 24/192 filterless DAC ?
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on: June 08, 2010, 06:05:59 pm
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Compliments to the Chef, The DAC is galvanically isolated from the PC, and on that matter I would dare state that the PC can not make a difference.
So, WiFi, seperate videocard, overclocking are also allowed in the dedicated audio PC. So no more power tweaking and such (CPU, RAM) Wow, dedicated audio PC, is no longer a necessity, just get a fast PC. I hardly believe it. My M-Audio Transit (TAS1020B) also gives galvanic isolation and I couldn't stand the sound until I made all the tweaks and undervolting/underclocking. But the Transit is fed by USB power... I haven't got any firewire device so far, but I know that for USB, the PC's power/noise will affect SQ even when you spend money for a fancy transport like ART Legato with separate power. The only way to virtually eliminate computer's negative impact on DAC is to cut the power leg from USB, but sometimes it's required for a receiver to operate. My question for you Peter is: does NOS1 feed 30V from firewire on PC's side?
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342
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Ultimate Audio Playback / XXHighEnd Support / Re: Description of Processor Core Appointment Schemes
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on: June 08, 2010, 09:59:14 am
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Roy - Marcin was talking about a complete *album* being in memeory; Impossible. Why not? Even with 8 or 16GB of RAM? Right now I am able to load Yello - Touch (24/48) to memory. I already played it few times and can confirm that absolutelty no pops occur But that's album-file. The problem is still a pain in the neck when I try to play few tracks. It would be great if you could add another option to memory management responsible for max number of tracks loaded into memory. Of course the total max size would be the border. That's the cure for all the folks having slow CPUs and not being able to play without pops and clicks. Let's make use of that large memory modules, shall we? Now, back to the Core Appointment Schemes. They still affect SQ even on a single core CPU. The difference is very much audible with the same characteristics of sound as on a dual core processor. Will go back to this later.
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