Re: [Alsa-user] AMD RX Vega 11 HDMI - audio limited to 16bit/48KHz

2018-12-23 Thread Ralf Mardorf
On Sun, 2018-12-23 at 11:57 -0600, Paul wrote:
> On 12/23/18 5:38 AM, Ralf Mardorf wrote:
> > On Sun, 23 Dec 2018 09:36:13 +0100, Ralf Mardorf wrote:
> > > HDMI
> > Oops, so the analog domain isn't on board :D. However, the culprit for
> > odd audio quality remains the analog domain.
> > 
> > 
> > ___
> > Alsa-user mailing list
> > Alsa-user@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/alsa-user
> 
> Actually I can hear pretty clearly the difference between 16/44 CD 
> quality and 24/96 recordings, not to mention SACD music - this one blows 
> anything else out of water.
> 
> Obviously one needs decent hardware and speakers, and not every music 
> can reveal the difference. I bet if one mostly listens to rap in his 
> car, then it's not possible to even distinguish between low rate MP3 and 
> CD.
> 
> BTW, I think HD audio already supported by AMD Vega 11 GPU, I was able 
> to play 24/192 source today through HDMI and it wasn't down-converted, 
> at least my receiver showed 192Khz sampling. So please disregard my 
> question.
> 
> Thanks.

I never mentioned CD quality, I mentioned 48 KHz, not 44,1KHz! Let alone
that my main point is the analog domain.

Regarding computer related audio equipment, for example, the headphone
amp's audio quality of card 0 is way beyond of card 4. Sample rate and
bit depth of the digital domain are secondary, if the analog domain
isn't professional.

[rocketmouse@archlinux ~]$ aplay -l | grep -e card\ 0 -e card\ 4
card 0: HDSPMx579bcc [RME AIO_579bcc], device 0: RME AIO [RME AIO]
card 4: USB [Scarlett 18i20 USB], device 0: USB Audio [USB Audio]

Even DAT longplay would sound better played via the RME analog outputs,
than any better digital quality recording played by the Scarlett's
analog outputs. _But_ AFAIK even a pro-sumer device such as the Scarlett
beats any on-board audio device, in regards of converters as well as the
analog domain.

Sample rate and bit depth mean nothing at all, if the converters and the
analog domain are the weak parts of the audio chain.



___
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user


Re: [Alsa-user] AMD RX Vega 11 HDMI - audio limited to 16bit/48KHz

2018-12-23 Thread Ralf Mardorf
On Sun, 23 Dec 2018 18:45:56 +0100, Ralf Mardorf wrote:
>On Sun, 23 Dec 2018 08:03:42 -0800, chris hermansen wrote:
>>Actually it appears that it is possible to distinguish high resolution
>>content  
>
>Some people that have done similar tests, claim that artificial
>strawberry flavour does taste more natural, than a strawberry.[snip] Do
>the strawberry yogurt test first, before you ask people to listen to
>music.

PS: I visited an elementary school's Christmas party, almost all
parents watched their acting children on the screen of a smartphone.
They moste likely did not watch their children directly, because it's
more natural to watch art on a smartphone screen nowadays, than taking a
look with the eyes directly to the stage. IOW a recording, is a
recording, is a recording, is a recording! If you reach the technical
and "spiritual" limit, you reach the limit. Most people nowadays are
just used to spiritual limits and their guess is that an overdose of
redundant technology somehow could rectify barbarism.


___
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user


Re: [Alsa-user] AMD RX Vega 11 HDMI - audio limited to 16bit/48KHz

2018-12-23 Thread Ralf Mardorf
On Sun, 23 Dec 2018 08:03:42 -0800, chris hermansen wrote:
>Actually it appears that it is possible to distinguish high resolution
>content

Some people that have done similar tests, claim that artificial
strawberry flavour does taste more natural, than a strawberry. It was
my job to build professional studio gear, among others jobs I was
engineer for a famous German microphone company. I seriously wonder
what microphone was used to do any analog or digital recording in the
first place, that provides a signal, that could benefit from something
higher for playback than 48 KHz/16 bit. I'm not interested in reading
any paper, I like to get the recordings that prove to make a difference!
I doubt that some wobbling virtual synth beats the audio quality of
professional recorded music. Do the strawberry yogurt test first,
before you ask people to listen to music.


___
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user


Re: [Alsa-user] AMD RX Vega 11 HDMI - audio limited to 16bit/48KHz

2018-12-23 Thread Ralf Mardorf
On Sun, 23 Dec 2018 09:36:13 +0100, Ralf Mardorf wrote:
>HDMI

Oops, so the analog domain isn't on board :D. However, the culprit for
odd audio quality remains the analog domain.


___
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user


Re: [Alsa-user] AMD RX Vega 11 HDMI - audio limited to 16bit/48KHz

2018-12-23 Thread Ralf Mardorf
On Sat, 22 Dec 2018 20:16:28 -0600, Paul via Alsa-user wrote:
>Hi,
>
>I have Ryzen 5 2400G CPU with built-in Vega 11 GPU - checking out 
>available codecs on Fedora 29 (kernel 4.19.10) I get the following:
>
>Codec: ATI R6xx HDMI
>Address: 0
>AFG Function Id: 0x1 (unsol 0)
>Vendor Id: 0x1002aa01
>Subsystem Id: 0x00aa0100
>Revision Id: 0x100700
>No Modem Function Group found
>Default PCM:
>     rates [0x70]: 32000 44100 48000
>     bits [0x2]: 16
>     formats [0x5]: PCM AC3
>
>
>When will support for 24/32 bit and 96/192KHz audio playback be 
>available for this GPU?

Off-topic: For playback (not for production) of audio signals aimed for
the human ear and human brain, 16 bit 48 KHz is all you need. If you
aren't satisfied by the audio quality you get for playback at 16 bit
48 KHz, it's usually the analog domain that needs improvement first,
but indeed the digital to analog converters are available in different
qualities, too, so you also might need to replace them. The most weak
point in the analog chain usually are integrated (onboard) audio
devices. However, even if you own pro-sumer or professional audio
devices (PCIe/USB etc.) with very good digital to analog converters, the
analog domain of those devices still could make a big difference. Don't
expect that you gain anything regarding audio quality audible for
humans, as soon as 24/32 bit and 96/192KHz for playback are supported.
Btw. for audio productions it's better to have a higher bit resolution,
at least 24 bit and better 32 bit floating-point, but even than you
don't need a sample rate higher than 48 KHz.


___
Alsa-user mailing list
Alsa-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/alsa-user