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Messages - Mikhail

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Multimedia / Re: XHCI and USB Audio perspectives
« on: October 03, 2022, 02:37:05 pm »
Good news!
Fans of good sound have to wait for the official USB driver package from AN.

Thank you very much, the problem would hardly have been solved without you.

Multimedia / Re: XHCI and USB Audio perspectives
« on: October 03, 2022, 01:02:15 pm »
David, can you create a ticket against USBAUD2 at Netlabs and attach all info there ? It´s becoming too cluttered here.

I would like to ask you to post the interim results of diagnostics in this thread.
As far as I understand there is positive news?

Multimedia / Re: XHCI and USB Audio perspectives
« on: September 20, 2022, 01:00:51 pm »
It seems your arguments have had an effect on David Azarewicz.
Now we need to understand how to trace a problem, how to get the missing data to finalize the driver in AN.

Multimedia / Re: XHCI and USB Audio perspectives
« on: September 19, 2022, 06:47:14 pm »
Ugh.. Although I think David Azarevich's arguments are not correct *, try using an active USB hub with external power to connect your UAC2 device. This should eliminate doubts that the device does not have enough power from the port of your computer.

Anyway, we will pass the ball to the other side)

*In my case, UAC2 devices with external power are used, which do not use the USB power bus from the computer at all, so David's arguments are not clear to me.

Multimedia / Re: XHCI and USB Audio perspectives
« on: September 19, 2022, 03:16:03 pm »
David, thank you for opening a ticket in AN.
To successfully promote the ticket, I suggest attaching a log from the configuration where the UAC2 device is connected to the USB2 ehci port of the controller. There it should correctly convey information about itself, which can lead David Azarevich to the right thoughts.
Now FUNDAMENTAL problems are being poked at the incompatibility of a specific UAC2 device, which of course is far from the truth.

Multimedia / Re: XHCI and USB Audio perspectives
« on: September 18, 2022, 06:38:19 pm »
Hi David,

I use the PM123 player to play audio over the DLNA protocol. The player has an OS2audio plugin that displays the properties and capabilities of the connected audio device. When trying to connect a UAC device to a USB3 port with an XHCI interface, the plugin shows that it seems to "see" the device, there are no errors, it even tries to start playback, but immediately stops.

I have very..  a heavily stripped-down version of OS2, which is downloaded over the network from a 16MB image, it simply lacks many system applications, such as USB and HW manager. There is not even a permanent hard drive or SSD in the system)

Before asking for help, I deployed the full distribution on the SSD, in order to make sure that my problem is not related to the config or the absence of some files, at the time of testing the standard version of USBaudio 244, the connected devices were not visible in PCIDOCK.


Multimedia / Re: XHCI and USB Audio perspectives
« on: September 18, 2022, 12:59:09 pm »
same result

Multimedia / Re: XHCI and USB Audio perspectives
« on: August 28, 2022, 11:42:43 pm »
Hope is the best I could get.
Thanks for the perspective.

Multimedia / Re: XHCI and USB Audio perspectives
« on: August 27, 2022, 10:03:51 pm »
Indeed, SPDIF is found on some motherboards, both in the Toslink (Optical) and Coaxial versions.
But there are fewer and fewer such boards, now digital audio is mainly encoded inside HDMI or DP, for transmission to AV receivers.
Of course, this method of signal output is better than analog.
Comparing the sound quality after a DAC that has both SPDIF and USB input is not in favor of SPDIF.
The decrease in quality at the output of SPDIF after cheap motherboard chips has quite understandable reasons, but I think it is wrong to describe them here.
Again, supporting only a very limited set of audio formats in UNIAUD is a significant problem.

Multimedia / Re: XHCI and USB Audio perspectives
« on: August 27, 2022, 07:32:17 pm »
Mikhail is looking for something that supports sample rates well beyond 44.1 kHz and also 32-bit sample depth. Uniaud cannot do that, partly because only USB AUDIO knows about those new PCM sample formats and partly because Uniaud on board HW does not support that.
Lars, thank you for the clarifications and your support.

I'm not really looking for quality in PCM formats above 44.1Khz/16Bit.
Yes, recordings in 96kHz/24bit or 192khz/24bit formats can sound good.
But even in 44.1Khz / 16Bit PCM there is a huge amount of information that is not audible if you connect an amplifier, speakers or headphones directly to the analog output of the computer's sound card.
In order to transmit an audio signal from a computer to an external, higher-quality DAC (digital-to-analog converter), you need to use either: USB bus (USBAudio), or AES/Coax or i2c LVDS (Uniaud).
  • The first option is really universal, it allows you to transmit any audio format, no additional expansion cards are required, as long as you are satisfied with the power quality and other port parameters on your motherboard.
  • The second option only in the i2s version gives universal support for all audio formats, requires the installation of an expansion card with an output port.
There are very few digital signal output cards for a computer, there are only a couple of pieces for i2c output (there are also not many devices that will receive an i2c signal).
For this reason, there is no alternative to USBAudio for high-quality audio output yet.
OS/2 outputs extremely high quality audio.
If simple conditions are met, it is possible to receive a signal better than that of specialized devices from DCS, Aurender.

Multimedia / Re: XHCI and USB Audio perspectives
« on: August 27, 2022, 01:20:02 am »
After installing the latest driver 12.13 into my system, UAC2 audio devices did not work through the ports of controllers with pure XHCI mode.
At the same time, the absence of any errors seemed very strange to me. In fact, there is simply no sound, playback does not start. PM123 player or the built-in player tries to start WAV file playback and that's it, the timer hangs at 00:00 there are no errors, you can switch tracks, do whatever you want, there is no sound.

Multimedia / XHCI and USB Audio perspectives
« on: August 25, 2022, 09:41:12 pm »
Greetings, dear community.
Please tell me what prospects to get UAC1/2 support for controllers without EHCI support.
As far as I understand now, the problem is the lack of isochronous support in the current drivers.
At the moment, there are more and more boards with controllers that support only XHCI interfaces, sound devices in USB ports do not work on such boards.
Does no one output sound via USB?

Off Topic discussions / Re: Russia attacked Ukraine
« on: March 21, 2022, 01:27:22 am »
Translations of local news into various languages:
Let everyone draw their own conclusions.

Chronicle of the writer, publicist Gonzalo Lira Lopez, who is stuck right now in Kharkiv:

Applications / Re: patched PmMerge
« on: June 15, 2021, 11:57:49 pm »
Works well on AOS 5.06 kernel-2.02 & OS/4
I didn't find any problems!
Thank OS4USER. bip-bip-bip

Setup & Installation / Re: Intel nuc
« on: March 02, 2021, 04:23:09 pm »
I had a bad experience trying to install ArcaOS on an intel NUC 8th generation.
The system refused to install due to the A20 Gate error. In the bios, there are no options for emulating the keyboard, so I could not solve the problem.

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