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Author Topic: Peak Extend and Arc Predict with 1x upsampling  (Read 870 times)
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charliemb
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« on: July 31, 2012, 05:29:05 am »

If Peak Extend and/or Arc Prediction is checked, and then 1x is selected on the slider (.9z-6-1c), it's a little bit counterintuitive as to what actually happens (since AP is a form up upsampling).

Can anyone tell me what happens at 1x?

PE forces -3db?

AP still applies?  (the filtering half)

Thanks

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March 2014 (0.9z-9b)        *=appear to be critical
XXHighEnd PC (i7 3930K) Hyperthreading On (12 cores) underclocked to *2.5GHz*, 16GB, Windows 7 Ultimate64 SP1 on 2.5 SATA2 spinning disk, XX on 2.5 OS disk, music on 3.5 SATA3 7200 RPM.  Motherboard BIOS settings: BCLK = 90 MHz / Intel Speed Step = OFF / Max Clock Ratio = 25 / Allow OS to change ratio = OFF.  XXHighEnd Engine#4 Adaptive Mode / Q1/2/3/4/5 = 1/0/0/0/0 / Q1x = 1 / Dev.Buffer = 2048 / ClockRes = *1.25ms* / Straight Contiguous / SFS = *60* (max 120) / PE Off / Phase Alignment Off / Playerprio = Low / ThreadPrio = Real Time / Scheme = 3 / *No Playback Drive* / *No RAMDISK* (built-in, not IMdisk) / UnAttended / ALL Services Off / Minimize OS / XTweaks Ultimate, "Time Performance Index" set to "Not the best" / *2x AI* Upsampling (for 44.1/16 bit) / No Upsampling for HiRes material (hassle) w/FX=On
DAC: Wyred 4 Sound DAC2 (set to default PCM Rolloff), and no preamp
PeterSt
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« Reply #1 on: July 31, 2012, 07:49:43 am »

Good question(s);

AP will do noting.
PE will still be active.

Don't ask me how PE works out regarding the several "debates" on its distortion factor in the out of band frequencies, since this can not be checked (or I must really sit back and think about how). So, not filtering is active, and therefore all will be a "mess" anyway (waiting for the filtering DAC to solve that of course).

Peter
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W7 - February 9, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @*500MHz*, 16GB, Windows 7 Enterprise 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = *6*/-/1/1/1 / Q1Factor = *1* / Dev.Buffer = 4096 / ClockRes = 15ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.40* (max 320.00) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - *Persist* (this is for conveniency and sub 1.186a)  / No WallPaper / No OSD / No Running Time / Minimize OS / XTweaks : *Use Settings* - *64, 1, 1, 0, 1* / Time Performance Index = Optimal / Time Stability = On / Double Octo Arc Prediction Upsampling / -> USB3 (*Silverstone *both* sides isolated*) -> 24/768 Phasure NOS1 async USB DAC, Driver v1.0.3 (*16ms*) -> Orelo MKII Active Open Baffle Horn Speakers.
**Removed Switching Supplies from everywhere**

W8 - March 1, 2014 (1.186-a)
XXHighEnd PC -> i7 3930K Hyperthreading On (12 cores) @0.43GHz, 16GB, Windows 8 Pro 64bit on EMedia SATAIII 2.5" 7200RMP spinning disk, XXHE on 2GB RAMDisk (IMDisk), music on LAN (dynamically stopped/started) / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 6/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = *0.5ms* / Memory = Straight Contiguous / Include Garbage Collect / SFS = *0.32* (max 120) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = *Core3-5* / Not Switch Processors during Playback / Playback Drive 2GB RAMDisk (IMDisk) / UnAttended (Just Start) / All Services Off / Keep LAN - Not Persist / No WallPaper / No OSD / No Running Time / Minimize OS / XTweaks : Balanced Load = 43 / Nervous Rate = *1* / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = On / Double Octo Arc Prediction Upsampling / -> USB3 (Silverstone both sides isolated) -> 24/768 *modded* Phasure NOS1 async USB DAC, Driver v1.0.3 (2ms - this is not guaranteed for the NOS1) -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere

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