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-   -   Signalyst DSC1 (https://www.diyaudio.com/forums/digital-line-level/254935-signalyst-dsc1.html)

mcluxun 22nd July 2018 05:06 AM

2 Attachment(s)
Heat problem almost solved.
Now fiddling with the relay to get mute pin working proper.
Here's some plots from picoscope: one is the 7k square wave from dac board. another is the same wave after output board.

ppy 22nd July 2018 08:51 AM

1 Attachment(s)
Here are my measured 7K
File -3db 7K created Audition.
Playback via AsioProxy in DSD256.
Chinese transformer 10K:10K????????? ???????? ???????-???

mcluxun 23rd July 2018 12:25 AM

1 Attachment(s)
Quote:

Originally Posted by ppy (https://www.diyaudio.com/forums/digital-line-level/254935-signalyst-dsc1-post5495695.html#post5495695)
Here are my measured 7K
File -3db 7K created Audition.
Playback via AsioProxy in DSD256.
Chinese transformer 10K:10K????????? ???????? ???????-???

Correction: here's 7k square wave with 10k load.
LL1527XL transformer. 3.3K R65

barrows 23rd July 2018 04:44 PM

Filter for oversampling?
 
Quote:

Originally Posted by mcluxun (https://www.diyaudio.com/forums/digital-line-level/254935-signalyst-dsc1-post5496333.html#post5496333)
Correction: here's 7k square wave with 10k load.
LL1527XL transformer. 3.3K R65

Is this with a minimum phase or partial minimum phase filter?

mcluxun 23rd July 2018 05:04 PM

Quote:

Originally Posted by barrows (https://www.diyaudio.com/forums/digital-line-level/254935-signalyst-dsc1-post5496940.html#post5496940)
Is this with a minimum phase or partial minimum phase filter?

HQPlayer poly-sinc, DSD5v2 256+fs, DSD256.

mcluxun 31st July 2018 12:44 AM

2 Attachment(s)
Ki-CAD file:

GitHub - lkong/dsc2-header: u.fl dsc2 header with isolator


OSHPark:
OSH Park ~


Promised header with isolator

chientechnical 31st July 2018 03:22 AM

Quote:

Originally Posted by mcluxun (https://www.diyaudio.com/forums/digital-line-level/254935-signalyst-dsc1-post5503367.html#post5503367)
Ki-CAD file:

GitHub - lkong/dsc2-header: u.fl dsc2 header with isolator


OSHPark:
OSH Park ~


Promised header with isolator

I using ISO7640 as suggest of Amanero to isolator too. Do you need to reclock after the Isolator?

mcluxun 31st July 2018 04:05 AM

Quote:

Originally Posted by chientechnical (https://www.diyaudio.com/forums/digital-line-level/254935-signalyst-dsc1-post5503462.html#post5503462)
I using ISO7640 as suggest of Amanero to isolator too. Do you need to reclock after the Isolator?

I'm not using the isolator for i2s signals.
There are for DSD_ON and MUTE.

Fabrizio72 31st July 2018 09:11 PM

On the following link:
AK4137 I2S/DSD Sample Rate Conversion Board Supports PCM/DSD Interconversion DOP | eBay
A "new" AK4137 board is offered for 34 usd.
Instead of the other board (having Amanero input) this seems to have I2S input.

I understood that AK4137 doesn't allow top quality conversion, but do You think this board can be of some value for DSC2 ? For example odroid (or RPi3) to DSD through i2s without usb?
What's about "pops" at the starting session or between songs?

This can be a simple and cheap system to start listening...

Fab

barrows 2nd August 2018 10:06 PM

Thanks!
 
Quote:

Originally Posted by mcluxun (https://www.diyaudio.com/forums/digital-line-level/254935-signalyst-dsc1-post5503367.html#post5503367)
Ki-CAD file:

GitHub - lkong/dsc2-header: u.fl dsc2 header with isolator


OSHPark:
OSH Park ~


Promised header with isolator

For your work on this. I will certainly be trying it when i get the time! Are you experiencing quiet switching and starting stopping of playback etc, with no annoying pops, etc?


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