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Author Topic: Digital Sine Wave Generator  (Read 25752 times)
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Jud
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« Reply #15 on: March 29, 2013, 04:39:12 pm »

I have no idea at all whether any of this is great or cr*p, or how much the non-free stuff costs, and you probably already know about each of these.  But just on the off chance there's something of interest, here are a couple of links:

http://www.listeninc.com/us/products/sc_randd.html

http://www.qsl.net/dl4yhf/spectra1.html

And a collection of links -

http://www.radio.imradioha.org/PC_Based_Test_Gear.htm
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Win 7 64-bit; i7-950@3.07GHz; 16GB RAM; OS on SATA 6GB/s SSD; AIFF files on external FW HDD; XXHE and Playback Drive on separate RAMdisks; no page file; Audioquest Dragonfly DAC/preamp; PSE Studio IV amp; Pioneer SP-BS22-LR bookshelf speakers or Etymotic Research ER-4P in-ear monitors.  XXHE 0.9z-8-3a settings for the moment: Peak Extend; Arc Prediction; Redbook files upsampled 2x; KS Adaptive Mode; Phase Alignment off; buffer=512; Straight Contiguous; Playerprio=Low; ThreadPrio=RealTime; Unattended; OS minimized; all services off; Q1=17, factor=2; SFS=2.1; XXTweaks=Ultimate; Time Performance Index=Not the best.
PeterSt
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« Reply #16 on: March 29, 2013, 05:52:03 pm »

Thanks a bunch Jud. I realize that you were working on this when I did too and posted ...

I'm still dizzy of my own search from today, and I will look at it later.

Again, thanks,
Peter
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For the Stealth III LPS PC :
W10-14393.0 - July 17, 2021 (2.11)
XXHighEnd Mach III Stealth LPS PC -> Xeon Scalable 14/28 core with Hyperthreading On (set to 14/28 cores in BIOS and set to 10/20 cores via Boot Menu) @~660MHz, 48GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/0/0/*1*/ Q1Factor = *4* / Dev.Buffer = 4096 / ClockRes = *10ms* / Memory = Straight Contiguous / Include Garbage Collect / SFS = *10.13*  (max 10.13) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / Stop Desktop, Remaining, WASAPI and W10 services / Use Remote Desktop / Keep LAN - Not Persist / WallPaper On / OSD Off (!) / Running Time Off / Minimize OS / XTweaks : Balanced Load = *62* / Nervous Rate = *1* / Cool when Idle = n.a / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = Stable / Custom Filtering *Low* (16x) / Always Clear Proxy before Playback = On -> USB3 from MoBo -> Lush^3
A: W-Y-R-G, B: *W-G* USB 1m00 -> Phisolator 24/768 Phasure NOS1a/G3 75B (BNC Out) async USB DAC, Driver v1.0.4b (16ms) -> B'ASS Current Amplifier -> Blaxius*^2.5* A:B-G, B:B-G Interlink -> Orelo MKII Active Open Baffle Horn Speakers. ET^2 Ethernet from Mach III to Music Server PC (RDC Control).
Removed Switching Supplies from everywhere (also from the PC).

For a general PC :
W10-10586.0 - May 2016 (2.05+)
*XXHighEnd PC -> I7 3930k with Hyperthreading On (12 cores)* @~500MHz, 16GB, Windows 10 Pro 64 bit build 10586.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 0.10  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / 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 = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> Clairixa USB 15cm -> Intona Isolator -> Clairixa USB 1m80 -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere.

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GerardA
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« Reply #17 on: March 29, 2013, 06:54:33 pm »

This one makes me happy when I use it:
http://www.audiotester.de/
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asrock ->intel 6700/4GB/Samsung 850 SSD/Win 10() Pro /XXHE 2.09  Special (32) Clock: max ,SFS: 4  MC, Q1 = 14, Q2,3,4,5=0,0,0,2 Quad AP, No Invert / Playerprio = Belownormal / ThreadPrio = Realtime / Scheme = 3 / Mixed contigious / Unattended -> Minidsp 2x4HD (IIR and FIR)->  Mivoc AM80 / 300B / gainclone -> TDL TL/Seas Excell/ScanSpeak
CoenP
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« Reply #18 on: March 29, 2013, 08:43:46 pm »

Hi Arvind,

Answer is easy or difficult, depending on what you want to do with it. So, please be exact on the purpose you need it for.

Peter
Hi Peter,

I need to test the room for frequencies which create standing waves.

Best regards,

Arvind

Since the NOS 1 does something to standing waves I think Peter has a good point to use XX and the NOS1 all the way and use the cleanest signal possible.

I think timing the standing waves on a sweep isn't very exact, but may lead to usefull results. You can allways check with a narrower range afterwards or on the specific frequency you found.

I guess you are planning to determine the standing waves with your ears. You might want to evaluate the sweep on different locations considering the bellies and knots of the resonances, especially with the LF. Maybe this is not neccessary with the NOS; I am not familiar with the mechanism behind the reduction of standing waves.

Would you like to share your plan and why you bother about them?

Regards, Coen
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Settings: Qn: , SFS: , timeres: XT tweaks: , buf: 4096, driver: 8 ms,

Audio PC (jan 19): XXHE PC v1 with RAMdisk w.o. videocard and 1 of 2 cpu fans + BRIX/USB3 storage musicserver. ETN to Fibre converters (linear supplies), 500m SFP modules & 5m OM4 cable. Power cable PE not connected, together with nos1 and poweramp in separate "audio" powerstrip.

Clarixa set + Intona (or Lush 1m), Phasure NOS1a-75B G3 USB (buf 16 ms)-> Blaxius ->SE EL95 (0,8W triode) + cheap link to Abaqus 300W plateamps> Bastanis cable-> Bastanis Sagarmatha Duo ("DIY").

[other sources: TD124/3009SII-i/Grace F9/lounge LCR phono; Rega Planet 1997 vintage]
arvind
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« Reply #19 on: March 30, 2013, 07:29:05 am »

Hi Coen,

Many years earlier when I had just built my music room, I used to get a lot of resonance in the lower bass freq, 60Hz to 63Hz. This continued even after introducing XXHE & NOS 1 in my system. To correct this an audio consultant added  a few bass traps & it significantly reduced this problem.

Since the version 0.9z-8-3a, I have noticed that the upper bass (100Hz to 120Hz)is a bit difussed (not tight enough). This wasnt noticed by me untill the earlier versions.

In order to test the same, I was looking for a programme which could generate pure tone signals, which I could play like my music file through PC/NOS 1/Amps/speakers. This would help me locate the problematic freq & then I could consider bass traps or other methods to tame them.

Best regards,

Arvind
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W10-14393.0 RAM OS / Mach III LPS 14/28/XXHE 2.11/Engine#4/Adaptive Mode/16x /Custom Filter/Q1= 14/0/0/0 xQ1=1/Device Buffer:4096/Invert Phase=On/Minimise OS/PE=off/Unattended/Stop All Services/SFS=20.69/20.69(max)/ClockRes= 15ms/Straight Contiguous/Music on HDD/Lush^3 USB cable A:W-Y-R-G; B:W-Y-R/Phasure NOS 1a/75b/G3 USB DAC. > Blaxius*^2.5 A:B-G, B:B-G Interlink. Orelo MK II active speakers. ET^3 between Mach III & music server. Driver version 1.04/Driver Buffer 16ms. OSD text = Off
arvind
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« Reply #20 on: March 31, 2013, 10:18:42 am »

Hi Gerard,

Thanks for the link, it served my purpose.

Best regards,

Arvind
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W10-14393.0 RAM OS / Mach III LPS 14/28/XXHE 2.11/Engine#4/Adaptive Mode/16x /Custom Filter/Q1= 14/0/0/0 xQ1=1/Device Buffer:4096/Invert Phase=On/Minimise OS/PE=off/Unattended/Stop All Services/SFS=20.69/20.69(max)/ClockRes= 15ms/Straight Contiguous/Music on HDD/Lush^3 USB cable A:W-Y-R-G; B:W-Y-R/Phasure NOS 1a/75b/G3 USB DAC. > Blaxius*^2.5 A:B-G, B:B-G Interlink. Orelo MK II active speakers. ET^3 between Mach III & music server. Driver version 1.04/Driver Buffer 16ms. OSD text = Off
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