Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board - Page 52 - diyAudio
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Old 13th August 2013, 01:31 PM   #511
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I certainly do not want to come across as demanding anything, but I thought it wouldn't hurt to ask either.

I'm already using a smaller (72cell) Xilinx CPLD to split an I2s stream into left and right and handle the data inversions in my own dual diff 1541 dac.
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Old 13th August 2013, 01:42 PM   #512
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Quote:
Originally Posted by iancanada View Post
Unfortunately I cant find any working software based real time up-sampling apps which can go up to 384 KHz so far for both Mac and PC, any recommendation?

Ian
Hi Ian,

for the MAC Pure Music could do that including DSD file playback!

  • Up to 384 kHz sample rate
  • Selectable REAL-TIME 64-bit upsampling
  • DSD (2.8 and 5.6 MHz) file playback on any DAC (real time PCM conversion)

Just update the firmware of your Wave I/O to the newest one, witch support 32/384 kHz (for WaveIOs with RevisionID 00331 or higher)

Cheers,
Oliver

Attached Files
File Type: zip WaveIO_32Bit_384Fs.zip (18.9 KB, 31 views)
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Last edited by dvb projekt; 13th August 2013 at 01:51 PM.
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Old 13th August 2013, 02:41 PM   #513
qusp is offline qusp  Australia
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puremusic, audirvana, amarra to name a few for mac
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Old 13th August 2013, 07:16 PM   #514
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JRiver for Windows will upsample to both 352.8K & 384K, if high performance and amzaing flexibility is desired then HQPlayer from Signalyst can do up to 32/1.5MHz or DSD512 for Windows, Mac and Ubuntu and its derivatives but it is expensive.
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Old 14th August 2013, 09:59 AM   #515
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I do some testing yesterday and could confirm that the I2S to PCM module runs great.

Software setup:
iMac OS X 10.8 – Pure Music v1.89g R3 - iTunes

Hardware setup:
WaveI/O with latest SW (32bit/384 kHz support) – FIFO – Isolator - Dual Clock with Crystek CCHD-957 (LiFePo4 cell powered) – I2S to PCM convertor

DAC setup:
Jumper: short JOB
2* Red Baron V5.0 (NOS TDA1541A) parallel with simultaneous mode

192 kHz file - ok
44.1 kHz file upsamling to 192 kHz - ok
DSD 2.8 MHz file converted to 176.4 kHz - ok
DSD 5.6 MHz file converted to 176.4 kHz - ok
352.8 kHz file - SI570 clock needed
384 kHz file - SI570 clock needed
44.1 kHz upsampling to 384 kHz - SI570 clock needed
DSD 2.8 MHz & 5.6 MHz file converted to 352.8 kHz - SI570 clock needed

@ Ian

Perhaps you could do some upsampling listening tests (44.1 kHz files) between
Dual Clock with Crystek CCHD-957 - 192 kHz and SI570 clock - 384 kHz.

It would be very interesting if the upsamling to 384 kHz would bring the SI570 above the Crystek...

Cheers,
Oliver
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Old 15th August 2013, 12:19 AM   #516
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Quote:
Originally Posted by dvb projekt View Post
I do some testing yesterday and could confirm that the I2S to PCM module runs great.

Software setup:
iMac OS X 10.8 – Pure Music v1.89g R3 - iTunes

Hardware setup:
WaveI/O with latest SW (32bit/384 kHz support) – FIFO – Isolator - Dual Clock with Crystek CCHD-957 (LiFePo4 cell powered) – I2S to PCM convertor

DAC setup:
Jumper: short JOB
2* Red Baron V5.0 (NOS TDA1541A) parallel with simultaneous mode

192 kHz file - ok
44.1 kHz file upsamling to 192 kHz - ok
DSD 2.8 MHz file converted to 176.4 kHz - ok
DSD 5.6 MHz file converted to 176.4 kHz - ok
352.8 kHz file - SI570 clock needed
384 kHz file - SI570 clock needed
44.1 kHz upsampling to 384 kHz - SI570 clock needed
DSD 2.8 MHz & 5.6 MHz file converted to 352.8 kHz - SI570 clock needed

@ Ian

Perhaps you could do some upsampling listening tests (44.1 kHz files) between
Dual Clock with Crystek CCHD-957 - 192 kHz and SI570 clock - 384 kHz.

It would be very interesting if the upsamling to 384 kHz would bring the SI570 above the Crystek...

Cheers,
Oliver
Hi Oliver,

Good job! Do you mean you ran your Red Baron 1541A at 384KHz with FIFO KIT and the PCM daughter board? I confirmed 352.8KHz by myself. TDA1541A will be over clocked at both cases according to the spec. It seems Philips engineer left some space there for our audiophiles.

Thank you for the files, I'll upgrade my WaveIO for more test,

Regards,

Ian
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Last edited by iancanada; 15th August 2013 at 12:33 AM.
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Old 17th August 2013, 07:02 AM   #517
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Quote:
Originally Posted by iancanada View Post
Hi Oliver,

Do you mean you ran your Red Baron 1541A at 384KHz with FIFO KIT and the PCM daughter board?
Hi Ian,

with the dual clock board and the 22.5792 MHz and 24.5760 MHz clocks, i have no output with 352.8 kHz & 384 kHz sampling in half speed mode.

I think you need different clock speed. Thats why i wrote SI570 clock needed.


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Old 17th August 2013, 07:11 AM   #518
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The TDA1541 should accept 176.4 happily as the 7220A/B chip 4 times oversampled with an 11.2896 clock.
So Ian with the half speed mode does that mean the clock is divided by two?
If so with an 11.2896 clock does the TDA1541 require this in half to accept the 352kHz signal?
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Old 17th August 2013, 02:51 PM   #519
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Quote:
Originally Posted by dvb projekt View Post
Hi Ian,

with the dual clock board and the 22.5792 MHz and 24.5760 MHz clocks, i have no output with 352.8 kHz & 384 kHz sampling in half speed mode.

I think you need different clock speed. Thats why i wrote SI570 clock needed.


Insert an 45.xx and 49.xx in the dual clock board and set it to double-speed mode (read its manual) so you can play 352.8 and 384khz.

zsolt
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Old 6th September 2013, 03:15 AM   #520
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Quote:
Originally Posted by vzs View Post
Insert an 45.xx and 49.xx in the dual clock board and set it to double-speed mode (read its manual) so you can play 352.8 and 384khz.

zsolt
Yes, for sure they work.

Ian
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