24/192 no output via usb - silence

reddyshoey

Hello, frends!
I have rpi2b and yulong d200 dac connected. Everything is working fine except the files 24/192 and above. It is simply no signal on dac, through runeaudio shows that playback is working. Sorry can it be fixed, what should i look into?

rastus

reddyshoey wroteI have rpi2b and yulong d200 dac connected. Everything is working fine except the files 24/192 and above. It is simply no signal on dac, through runeaudio shows that playback is working. Sorry can it be fixed, what should i look into?

So it plays 24bit/96kHz and below files OK?
Which build of RuneAudio are you using?
Does S/PDIF IN and OPT IN and AES/EBU IN work?
Have you tried a different USB cable?
Does the small screen on the DAC show information when playing 24bit/96kHz files?

By the way, very nice DAC...

●THD+N less than 0.0005%, idle noise 2uV
●USB supports 32bit, 384KHz PCM signal

reddyshoey

rastus wrote So it plays 24bit/96kHz and below files OK?
Which build of RuneAudio are you using?
Does S/PDIF IN and OPT IN and AES/EBU IN work?
Have you tried a different USB cable?
Does the small screen on the DAC show information when playing 24bit/96kHz files?

1. Yes, everything below is ok, even DSD64 plays ok, I have not tried DSD128 though.
2. 0.3 beta for rpi2 (10/2014 to my mind) not the latest for rpi3.
3. Yes, S/pidif, opt works well, i have not tried AES/EBU yet.
4. I use yulong cu2 cable. I do not think that it can cause problems, but i will use something different just to be sure.
5. Small screen is a bit frustrating. If i play anything below 24/96, it shows: "USB input 192k", it shows like this even when i play nothing. if i play 24/96 it shows "USB input 384k", if i play DSD, it shows "USB input DSD" of course. Or everything is like it should be?

this dac has XMOS asynchronous usb input, maybe this is the reason? i saw a post somewhere here that asynchronous dac is not working properly?...

Thanks man, this is really very good dac! Price/quality ratio is perfect!=)

PeteB

reddyshoey wrote... i saw a post somewhere here that asynchronous dac is not working properly?...

If you did see that, I don't believe that was an accurate statement. In GENERAL newer, async DACs all work properly. some older versions of async may have issues with some sources at higher data rates.

Optical is not usually reliable above 96KHz, no matter how good the manufacturer did their job, because of legacy issues, and because of limitations of the 1-mm plastic fiber used in most cables. It may work, but can't be guaranteed to work, unless you buy the transmit end, the cable, and the receiver end from one company.

If you got the USB cable and the DAC from one company, it should work.

Are you playing 192K-24bit files from a local source/flash drive, or over a network?

Have you tried a different source at that sample rate?

Can you log in to the Pi via ssh/terminal, and check to see what is actually sent to the DAC?

Frank has posted some commands that can be used to print the type of data being sent from the MPD with is part of Rune, to an external DAC. The output looks like this, when I play 44.1K-16bit:

[root@runeaudio ~]# cat /proc/asound/card0/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 4410
buffer_size: 22050

[root@runeaudio ~]# cat /proc/asound/card1/pcm1p/sub1/hw_params
closed

reddyshoey

PeteB wrote Are you playing 192K-24bit files from a local source/flash drive, or over a network?

Have you tried a different source at that sample rate?

Can you log in to the Pi via ssh/terminal, and check to see what is actually sent to the DAC?

Maybe i am wrong about the asynchronous usb input... it was late in the night and english is not my native language, so i could get it in a wrong way.
1. Both: usb and network - same result.
2. Yes, i tried. result is always the same.
3. Here the output.

access: RW_INTERLEAVED
format: S32_LE
subformat: STD
channels: 2
rate: 192000 (192000/1)
period_size: 24000
buffer_size: 96000

This oputput is always the same - no matter which 24/192 file i am sending to play. It seems that rate is fixed to 192k. But i did not make such set up!

hondagx35

Hi reddyshoey,

please post your debug data.
Also trying the latest version could be an option.

Frank

PeteB

Besides what Frank said, do you have any 192/24 material to try, or just the S32?

Have you tried playing around with the buffer settings in Menu->MPD->General?
(edit: I should say that even w. a small buffer, something should come out)

Here is the output from mine, playing 192/24, for comparison, USB DAC:

[root@runeaudio ~]# cat /proc/asound/card1/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S24_LE
subformat: STD
channels: 2
rate: 192000 (192000/1)
period_size: 16384
buffer_size: 65536

same file, 96/24 using an I2S DAC:

[root@runeaudio ~]# cat /proc/asound/card2/pcm0p/sub0/hw_params
access: RW_INTERLEAVED
format: S24_3LE
subformat: STD
channels: 2
rate: 96000 (96000/1)
period_size: 12000
buffer_size: 48000

Btw, I noticed I can get sound from both ports at the same time, while the two DACs are both connected, but only one is selected... a feature?

reddyshoey

hondagx35 wroteHi reddyshoey,

please post your debug data.
Also trying the latest version could be an option.

Frank

Hello, Frank!
Thanks for looking in here!
here is the debug
http://pastebin.com/gWUcDGDS

reddyshoey

update on the situation. it seems that problem is in the DAC itself. I just tried to play same files via this dac on my windows pc, using foobar. Dac showed the same picture: "USB input No signal".... WTF?