Upsampling

Discovery

I am getting good results with a Raspberry Pi 2 into an Audiolab M-DAC. It would be great to upsample the output so that the DAC has less work to do.

paranoidjack

You can add this to the MPD config (/etc/mpd.conf) for 192Khz/24bit/2channel

audio_output_format 	"192000:24:2"
samplerate_converter 	"soxr very high"

Using this with a Raspberry Pi2 and IQaudio DAC+

mika-nl

Are you hear that ?

nbnb

mika-nl wroteAre you hear that ?

i have a similar problem. not for sound quality but in order to use an external DAC which needs a fixed sample rate. i was able to use soxr to enable upsampling for mpd. however upsampling for shairport does not work this way. it seems that would have to be set up within alsa.

so my feature wish: enable upsampling/resampling to a chosen rate in runeUI, which then works for all sources. preferably by using a patched alsa which uses soxr for resampling (such a patch seems to exists somewhere in the interwebs but seems not to be included in alsa)

Audiotone

[quote="paranoidjack"]You can add this to the MPD config (/etc/mpd.conf) for 192Khz/24bit/2channel

audio_output_format 	"192000:24:2"
samplerate_converter 	"soxr very high"

Would be nice if this was available in the settings menu...

rikardo1979

Audiotone wrote

paranoidjack wroteYou can add this to the MPD config (/etc/mpd.conf) for 192Khz/24bit/2channel

audio_output_format 	"192000:24:2"
samplerate_converter 	"soxr very high"

Would be nice if this was available in the settings menu...

+1 for this

You have this option in MoodeAudio, so it is possible to achive. It all depends on developers if they going to add it into RuneAudio

Audiotone

rikardo1979 wrote
Audiotone wrote
paranoidjack wroteYou can add this to the MPD config (/etc/mpd.conf) for 192Khz/24bit/2channel
audio_output_format 	"192000:24:2"
samplerate_converter 	"soxr very high"
Would be nice if this was available in the settings menu...
+1 for this

You have this option in MoodeAudio, so it is possible to achive. It all depends on developers if they going to add it into RuneAudio

I tried to modify the mpd.conf file...saved it, opened it and mods were added...but after reboot mods are no longer in the conf file...what do I do wrong?

hondagx35

Hi,

if you want to set an option in mpd.conf you have to use:

redis-cli hset mpdconf audio_output_format "96000:24:2"

on the console and reboot to get it active.

Frank

rikardo1979

hondagx35 wroteHi,

if you want to set an option in mpd.conf you have to use:

redis-cli hset mpdconf audio_output_format "96000:24:2"

on the console and reboot to get it active.

Frank

I think you have a little typo there Frank. Should be

redis-cli hset mpdconf audio_output_format "192000:24:2"

to get 24/192

hondagx35

Hi rikardo1979,

this was only an example.

Frank

Audiotone

Would be much better if this option could be set in mpd setting menu...
Any chance this would be implemented soon? This is the only issue that would keep me (and a lot of audio freaks like me) away from rune audio...
For the rest...just perfect!

hondagx35

Hi Audiotone,

the main goal of RuneAudio is to try to play your music bit perfect.
So up or down sampling is not what we like to do.

(and a lot of audio freaks like me)

For a real freak executing this commands on the console shouldn't be a problem at all.

Frank

Audiotone

hondagx35 wroteHi Audiotone,

the main goal of RuneAudio is to try to play your music bit perfect.
So up or down sampling is not what we like to do.

(and a lot of audio freaks like me)
For a real freak executing this commands on the console shouldn't be a problem at all.

Frank

Oops...not so very friendly...I was only making a suggestion.
Btw executing that command was a piece of cake...has nothing to do with being an audiofreak...most of them I know are computer allergic...
I do not have a fetish with upsampling or bitperfectness...if it sounds ok I am happy.
I hope your comment was not ment to be unfriendly...

rikardo1979

Audiotone wrote
hondagx35 wroteHi Audiotone,

the main goal of RuneAudio is to try to play your music bit perfect.
So up or down sampling is not what we like to do.

(and a lot of audio freaks like me)
For a real freak executing this commands on the console shouldn't be a problem at all.

Frank
Oops...not so very friendly...I was only making a suggestion.
Btw executing that command was a piece of cake...has nothing to do with being an audiofreak...most of them I know are computer allergic...
I do not have a fetish with upsampling or bitperfectness...if it sounds ok I am happy.
I hope your comment was not ment to be unfriendly...

I am with you on this

good point here
These guys here are great help, and they did help me a lot. But me liking good sound I tested all the systems out there to make my decision and go for the best sounding and the one which best fits me. I use to have RuneAudio for a while. Now I testing MoodeAudio for few weeks
Check this thread if you are interested

hondagx35

Hi Audiotone,

I hope your comment was not ment to be unfriendly...

No it wasn't. I think you haven't heard me being unfriendly, because this sounds different

.

You have to see my answer from the developer perspective.
We tried to keep the UI as simple as possible.
Most DACs work without modifying mpd.conf.
We implemented an option to modify mpd.conf (see my post).
If you like to play with different settings (or your DAC needs it) you have to ask or read the forum about this option.

Any chance this would be implemented soon? This is the only issue that would keep me (and a lot of audio freaks like me) away from rune audio...

This is the where i'm not with you.
Why should playing bit perfect keep an audio freak away from Rune?

For the rest...just perfect!

Thanks.

The config page will change with next version.
We have to see what can be done.
Thank you for the suggestion.

Frank

nbnb

i'll answer for my case: i have a (high quality) audio interface which has an s/pdif input that accepts a fixed sampling rate only. i use hifiberry digi+ to feed that. so i have no option for 'bit-perfect' playback, i need to resample.

i admit that this is maybe not the most common situation. so editing config files is totally ok for me -- if the info can be found. (i did it for mpd, which works fine. i still have not been able to make it work for shairplay playback though, could not find the info)