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XXHighEnd > Ultimate Audio Playback > Chatter and forum related stuff > Digital clocks and masters
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Author Topic: Digital clocks and masters  (Read 12802 times)
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Chris V
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« on: July 07, 2007, 12:57:50 pm »
This thought has intrigued me for a while. dntknw

The signal starts from my PC which I guess has a clock, into the Fireface which also has a clock capable of snc or master and then to my TacT 2.2XX (DAC) where there is probably another clock.

Now sonically I believe its best to have a master clock running the whole system, but which one is it and how do you ensure it has taken control. whistle whistle

Cheers Chris
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Music on external hard drive with own power supply. Brains of the system is a Raspberry Pi running Moode Audio. The RPI has dedicated Longdog audio linear power supply.
Signal passes first to SW1X Signature USB to SPDIF  converter
Then to SW1X Signature DAC
Then to Stevens and Billington TVC
Then to modified vintage triode amplifier
Then to open baffle speakers with vintage alnico drivers. Grundig tweeter, Saba Greencone midrange, Altec 416 VOTT base.
Everything is silver wired including mains and speaker cables
PeterSt
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« Reply #1 on: July 07, 2007, 02:00:30 pm »
Hi Chris,

The PC has no physical clock for controlling audio data. It has a software clock though, which can not act as a master which can be synched to.
For your Fireface this implies that it will always act as master clock, which you can see in the screen behind the yellow icon (no matter whether you tell it to be master or not, it just is master and it shows that).
Only when you connect another audio device to the input concerned, it can be a slave (or set to master). If you don't have such other device to try, you can connect it to itself (a digital output to a digital input). The lights will show accordingly.

If there would be a wordclock input on the TacT, the Fireface could control the TacT's clock physically (say, via the backdoor), which then would give better results on jitter. The wordclock connection is a BNC (plug) connection; I don't know whether that's on the Fireface400 (on the 800 it is). The wordclock is a pro audio thing and not applied much in the consumer world (I think).

Peter
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For the Stealth III LPS PC :
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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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Chris V
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« Reply #2 on: July 07, 2007, 06:40:55 pm »
Thanks Peter, that makes it pretty clear. The 400 does have the in/out BNC word clock connections Wink, but
the Tact 2.2X does not have an input for word clock. I believe there are several clocks inside doing the business.

Out of interest, are there any NOS DACS (TwinDAC+) that currently have a word clock connection?

Cheers Chris
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Music on external hard drive with own power supply. Brains of the system is a Raspberry Pi running Moode Audio. The RPI has dedicated Longdog audio linear power supply.
Signal passes first to SW1X Signature USB to SPDIF  converter
Then to SW1X Signature DAC
Then to Stevens and Billington TVC
Then to modified vintage triode amplifier
Then to open baffle speakers with vintage alnico drivers. Grundig tweeter, Saba Greencone midrange, Altec 416 VOTT base.
Everything is silver wired including mains and speaker cables
PeterSt
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« Reply #3 on: July 07, 2007, 06:52:40 pm »
The TwinDAC+ doesn't have it. Maybe very expensive DACs do.
Just Google for DAC wordclock (no quotes surrounding). I didn't do it. Happy
Maybe you get too much pro audio stuff. Then try
"audio dac" wordclock
(keep the quotes there).
And further to your imgination. yes
Logged
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.
Global Moderator
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