Additional programs and HDMI

Raspberry Pi related support

Additional programs and HDMI

Postby xander » 25 Jul 2014, 06:27

Hi board members,

I'm completely new to Linux and to this forum, so I hope my questions are not too trivial.

I would like to install RuneAudio on my Raspberry Pi. I'm currently running raspbmc and playing music via xbmc. It works good but Rune seems to be more promising for me. It would be great if someone can help me out:

- is it possible to install RuneAudio onto raspbmc or do I have to format sd card completely?

- if I just install runeOS on the sd card, is it possible to install additional programs (i.e. bittorrent sync for syncing music folders with my desktop).

- can I use putty and/ or filezilla? Especially the latter one to get my music onto the hdd in case btsync doesn't work?

- my external hdd is ext4. Is that ok with Rune?

- general questions: my pi is directly connected to a Denon X4000 AVR via HDMI. Is there a difference in sound quality between the HDMI output of the pi and a USB DAC? I would like to have the best sound quality possible with the pi but everyone seems to use a USB DAC instead of the HDMI connection. Why?


Many thanks in advance!
xander
 
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Re: Additional programs and HDMI

Postby ACX » 25 Jul 2014, 12:11

Hi xander,

xander wrote:- is it possible to install RuneAudio onto raspbmc or do I have to format sd card completely?

You need a standalone install

xander wrote:- if I just install runeOS on the sd card, is it possible to install additional programs (i.e. bittorrent sync for syncing music folders with my desktop).

Yes, through pacman, the default packet manager in Arch Linux

xander wrote:- can I use putty and/ or filezilla? Especially the latter one to get my music onto the hdd in case btsync doesn't work?

Yes, just point them to your device's ip address and use user:root/pass:rune credentials

xander wrote:- my external hdd is ext4. Is that ok with Rune?

Yes, it should be

xander wrote:- general questions: my pi is directly connected to a Denon X4000 AVR via HDMI. Is there a difference in sound quality between the HDMI output of the pi and a USB DAC? I would like to have the best sound quality possible with the pi but everyone seems to use a USB DAC instead of the HDMI connection. Why?

Rpi isn't the optimal platform to use in combination of a USB DAC because of its issues with the shared Ethernet/USB bus of the Broadcom chipset. It works fine with many DACs but it also has a lot of issues with others, so be aware. I actually don't remember if the HDMI on the Rpi has any limits (for example if it resamples everything to 48KHz, so goodbye bit perfect), I've never tested it with proper equipment. You could test it and tell us how it works :)
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Re: Additional programs and HDMI

Postby xander » 25 Jul 2014, 12:43

Hi ACX,

thanks for your prompt reply and answers! Hopefully I'll have some time on the weekend to install and test Rune on my pi. Haven't had any problems with my flacs and xbmc via HDMI so far. But I'll let you know. So without using a USB DAC (just HDMI), the pi shouldn't have any shortcomings in sound quality? Or would you suggest me to try another system (i.e. Beaglebone)?

Again, Thanks a lot!
xander
 
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Re: Additional programs and HDMI

Postby ACX » 25 Jul 2014, 13:15

Does your Denon X4000 AVR display the frequency of the input signal? If it matches the one of the source files, don't worry and stick with your Rpi :)
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Re: Additional programs and HDMI

Postby xander » 29 Jul 2014, 10:04

HI ACX,

just want to give you a short feedback on the HDMI subject. But first of all:

Thank you! You and your team have done a fantastic job!

HDMI: I installed the 0.3 alpha version on my pi and directly connected it via HDMI to my Denon X4000 AVR. After switching the Audio output interface from analog to HDMI, my flac files 16/ 44.1 played flawlessly. Frequency of the input signal matches, so I guess no resampling occurs. No hiccups or other problems so far. I once inadvertently switched off the power without shutting runeaudio down properly. That caused rune to lose the HDMI setting. After rebooting, although HDMI Output was still selected it didn't work. I had to select Analog Output, save and then choose HDMI output (and save) again. Next: I want to test higher bitrates and see when and if problems with the RPi arise. Any suggestions what material could bring the RPi down?

ext4 wasn't a problem either.

RuneAudio: Imho the sound experience is great and it is superior compared to xbmc. I prefer to use the webUI in chrome (dolphin browser had some adjusting problems, MPdroid is also nice). Bookmarked it to the homescreen and it works like a native app. Really great! The whole rune system is clean, fast, responsive has great fonts and design. I have embedded cover art, which generally works. Sometimes it takes up to 10+ seconds to load. Maybe that is due to the size? Some cover art don't work although they should. Couldn't figure out the reason yet. It is also great to create playlists and be able to rearrange them.

Some (early) suggestions: There is one thing which is bothering me a little bit: As it was mentioned in this thread before (ui-improvements-album-art-presentation-etc-t170.html) It would be great to change the current default mode when hitting the library button. As you can see in this screenshot
Library_screenshot_2.jpg
Library_screenshot_2.jpg (11.23 KiB) Viewed 5770 times
, Imho the second row could be replaced completely for some buttons like artist, album, genre, song, playlist, folder. Thereby, browsing through the complete folder structure wouldn't be necessary and a selection of entire albums/ artists to queue would be possible. Also, updating the search function for artist/ albums (instead of tracks) would be great. One last thing about creating playlists: On my Galaxy Note 2 it takes 11 sec for the "Added to playlist notification" to vanish, which could be easily reduced to 1-2 sec. ;-) The reason is, when consecutively selecting tracks for a playlist, the whole screen is full of notifications and during that time it is not possible to select additional tracks or go back to another artist/ album.

Thanks again for your great work! I'm really looking forward to see the project evolve! Rune really makes me enjoy listening to music again!
xander
 
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Re: Additional programs and HDMI

Postby ACX » 29 Jul 2014, 13:22

Hi xander,
xander wrote:Next: I want to test higher bitrates and see when and if problems with the RPi arise. Any suggestions what material could bring the RPi down?

Please test it with some hi-res files (24/88.2, 24/96, 24/176.4, 24/192, etc) and look if the DAC matches the source. You could find some test samples in our Free resources forum.

xander wrote:Imho the second row could be replaced completely for some buttons like artist, album, genre, song, playlist, folder. Thereby, browsing through the complete folder structure wouldn't be necessary and a selection of entire albums/ artists to queue would be possible. Also, updating the search function for artist/ albums (instead of tracks) would be great.

I'm already working in this direction :) This feature will see daylight in the next 0.4-beta.
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Re: Additional programs and HDMI

Postby xander » 03 Aug 2014, 01:32

Hi ACX,

I just tested some Hi-Res material from one of the mentioned free resources http://www.2l.no/hires/index.html , i.e.:

Mozart: Violin concerto in D major - Allegro Marianne Thorsen / TrondheimSolistene:

- Stereo DXD 24BIT/352.8kHz, 1.0 GB --> didn't actually work, dropouts, hiccups etc.
- Stereo FLAC 24BIT/192kHz, 338MB --> works, no hiccups etc. --> resampled at 48kHz
- Stereo FLAC 24BIT/96kHz , 139MB --> works, no hiccups etc. --> resampled at 48kHz
- Surround 5.1 FLAC 24BIT/96kHz, 397MB --> works, no hiccups etc. --> resampled at 48kHz

Mozart - Violin concerto in D major - Stereo - FLAC 24BIT_192kHz.jpg
Mozart - Violin concerto in D major - Stereo - FLAC 24BIT_192kHz.jpg (15.75 KiB) Viewed 5705 times

I then found some older threads, that the resampling limitation @48kHz is due to the RPi kernel...


...but that there is a solutions for which 24/192 shouldn't be a problem:

Recently tghewett described how to raise it to 192kHz http://www.raspberrypi.org/forums/viewtopic.php?t=25810?


Do you think, the kernel can be tweaked/ recompiled so that sampling rates > 48kHz are possible? Other than that, HDMI Output works great.
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Re: Additional programs and HDMI

Postby stosoorok » 28 Mar 2016, 23:44

Hello,

Just upgraded to 0.4 beta on rPi2, but still no 24/192 on HDMI output?

With latest openElec (Kodi) 24/192 works great. Is there any way to get it working on runeaudio?

Regards,
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Re: Additional programs and HDMI

Postby hondagx35 » 29 Mar 2016, 00:16

Hi,

is it true 24/192 or is it downsampled to 24/48 ?

The latest arch linux kernel for RP2 and RP3 is only capable to play up to 48kHz.
See here.

Is there any way to get it working on runeaudio?

Yes, patching and recompiling the kernel is the solution.

We also could try the openelec kernel.

Frank
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Re: Additional programs and HDMI

Postby stosoorok » 29 Mar 2016, 07:55

hondagx35 wrote:Hi,

is it true 24/192 or is it downsampled to 24/48 ?

The latest arch linux kernel for RP2 and RP3 is only capable to play up to 48kHz.
See here.

Is there any way to get it working on runeaudio?

Yes, patching and recompiling the kernel is the solution.

We also could try the openelec kernel.

Frank

It is true 24/192 and runeaudio downsamples it to 16/48. With openELEC my Onkyo receiver shows 24/192.
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