Announce: Enhanced Digital Output app - USB Dac and 192k Digital Ouput

[paulster]

I checked the previous posts and found that some people were able to use the W4S DAC-2 with SBT+EDO using the s/pdif coaxial port. In my case the DAC's USB port is not recognized by the SBT and it doesn't play 192k/24 files.

Any clue on how to fix it?

The W4S DAC-2 requires drivers and they haven't released any Linux ones so it won't work. Your best best at the moment would be a compatible USB-I2S interface between the Touch and the DAC-2.

I've been thinking about the DAC-2 myself but from what I've read the USB interface on it isn't nearly as good as the other inputs anyway, so I was already thinking about having to budget for an I2S interface for it.

[dvmis]

I am puzzled. Reset and reinstaled SBT to 7.7.2 and installed EDO 0.8. Using vortexbox 2.2 with LMS having no bit limits and only streaming FLAC (all other formats are disabled on LMS) via ethernet CAT6 cable. I use North Star 192/24 dac - can play anything up to 96/24 - if I try 192/24 I get NO lock or if I stream PCM (just to try) then I get 44k lock and music plays very slowly.

What could be wrong - not sure what setting to try next?

I issued the command under terminal and it seems it is streaming at 192 but my dac won't lock:

# cat /proc/asound/TXRX/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S24_LE
subformat: STD
channels: 2
rate: 192000 (192000/1)
period_size: 1024
buffer_size: 2048
#

[jomal]

The W4S DAC-2 requires drivers and they haven't released any Linux ones so it won't work. Your best best at the moment would be a compatible USB-I2S interface between the Touch and the DAC-2.

I've been thinking about the DAC-2 myself but from what I've read the USB interface on it isn't nearly as good as the other inputs anyway, so I was already thinking about having to budget for an I2S interface for it.

Thank you for the answer. Ok, so why it doesn't play files above 96k?? Where do I buy this interface?

[jomal]

I issued the command under terminal and it seems it is streaming at 192 but my dac won't lock:

# cat /proc/asound/TXRX/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S24_LE
subformat: STD
channels: 2
rate: 192000 (192000/1)
period_size: 1024
buffer_size: 2048
#

I have the same issue with my W4S DAC-2 but Squeezebox seems not to be streaming at 192k:

cat /proc/asound/TXRX/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S24_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 1024
buffer_size: 4096

[dvmis]

Thank you for the answer. Ok, so why it doesn't play files above 96k?? Where do I buy this interface?

I can high recomend this one from Lucian in CH: http://luckit.biz/new/?tcp_product=waveio

[dvmis]

I have the same issue with my W4S DAC-2 but Squeezebox seems not to be streaming at 192k:

cat /proc/asound/TXRX/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S24_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 1024
buffer_size: 4096

I am noticing that my Buffer-size is half of yours or anyone else - coulod this be a problem? Again I did reset Touch and reinstalled 7.7.2 software before instaling EDO 0.8

[jomal]

I am noticing that my Buffer-size is half of yours or anyone else - coulod this be a problem? Again I did reset Touch and reinstalled 7.7.2 software before instaling EDO 0.8

I did set the EDO buffers to "large". Do you got your SBT streaming 192k?

[villager]

That's strange. Port 3483 (udp and tcp) is used by LMS to talk to the Squeezeboxes. Port 9000 is used by LMS to display its configuration pages. These should not be open on your router unless you intend to have Squeezeboxes talk to your LMS over the Internet.

The problem that I was trying to solve was setting up the Touch to allow playback from Internet based music services such as Pandora. At the suggestion of Logitech tech support, I opened these ports on my router and was able to access these Internet based services. Doing so also allowed me to download the EDO applet and reinstall it.

[dvmis]

I did set the EDO buffers to "large". Do you got your SBT streaming 192k?

I have default EDO buffer size (20000)- this is different then what is displayed via SSH and coax interface I think. I am streaming 192k from SBT as per the report via terminal just my North Star 192K DAC won't lock the stream - tried optical and coax interface. 24/96 and lower works perfectly. Could it be DAC issue?

[jomal]

I have default EDO buffer size (20000)- this is different then what is displayed via SSH and coax interface I think. I am streaming 192k from SBT as per the report via terminal just my North Star 192K DAC won't lock the stream - tried optical and coax interface. 24/96 and lower works perfectly. Could it be DAC issue?

It seems so. Can you test with another DAC? Some DACs do not support bit rates upper than 96k.

Do you know where do I see which EDO kernel the system is running?

BTW: the buffer size in my case makes no difference...

[jomal]

Is there a chance the LMS hosted in a Synology NAS is limiting the bit rate?

[paulster]

Thank you for the answer. Ok, so why it doesn't play files above 96k?? Where do I buy this interface?

I can high recomend this one from Lucian in CH: http://luckit.biz/new/?tcp_product=waveio

The (only) problem with Lucian's one is it doesn't have balanced (LVDS) I2S output, and the W4S DAC-2 only has balanced I2S input. I'm thinking about building one of these with an extra board to accommodate a single-ended -> LVDS interface on the output side, but that's getting into a pretty serious DIY project.

There are some converters on the market that might work. Empirical Audio's Off-Ramp 5 has a compatible LVDS I2S output but I believe this may possibly license the M2Tech HiFace 1 chipset for its USB input, in which case it'll suffer the same problems. Essentially, one of these types of devices is what you need, where the specs say it doesn't require drivers for OSX or Linux.

[jomal]

Is there a chance the LMS hosted in a Synology NAS is limiting the bit rate?

Triode kindly helped me to find the answer. The problem was the way LMS was streaming FLAC (not Native).

Unfortunately the DAC's USB port doesn't work yet.

Thanks!

[HumanMedia]

Are there any planned updates due for the stock EDO?
Like better handling of device identifier strings over 28 chars?
Or even a version that selects/downloads an appropriate kernel based on a devices identifier string?
Any updates coming down the pipe?

[r11bordo]

works fine with Audiophilleo

Hi,

EDO 0.8 installed on LMS 7.7.2 and all works fine except playing 24/192 WAV files on native mode. The result a very very low playing music ... wwaaaaaooooouuuuuuuu .... it's funny :-)
So, I have no take time to understand what happens but I saw :
- with flac parameter activated for wav files, 24/192 works fine but it is transcoded on NAS side, which generates high CPU load
- process priorities have not been changed which EDO installation, which is a good thing I think