Raspi3 HifiBerry DAC+ - left right channel swaping/switching

[Paul]

Hi Frank

Have done what you suggested - can see the following -

### Audio settings ###
audio_output = ao
high_bitrate = true
offline_high_bitrate = true

### Cache settings ###
#cache_size = 0
cache_path = /tmp/spop
settings_path = /tmp/spop

Is there anything I need to do to this (if so, how?) Apologies for not knowing much about Linux etc.

Regards

Paul

[hondagx35]

Hi Paul,

Is there anything I need to do to this (if so, how?)

For what? To get audio from spotify?

Have you tried to switch the audio output (MENU->Mpd->Audio output interface) while connected to spotify?
Try to select HDMI and back to your DAC.

Frank

[Paul]

Hello Frank

The only audio output interface available is the hifi berry interface. There is no HDMI or Analogue output listed. These 2 options "disappeared" when the issue of channel swapping was resolved.

Regards

Paul

[hondagx35]

Hi Paul,

These 2 options "disappeared" when the issue of channel swapping was resolved.

I think you didn't follow my instructions or forgot to set:

Code: Select all

dtparam=audio=on

in /boot/config.txt as described here.

Frank

[Paul]

Hello Frank

An update for you - I was unable to get Spotify to stream following the various instructions you kindly provided - thank you for these.

I had given up - I was able to stream Spotify via another device so decided to go with this.

I then decided to attach the RPI to my DAC via USB to see what it sounded like playing files stored on a USB drive - it is also attached via coaxial cable via a hifiberry digi + - anyway for some reason I can now stream Spotify via the hifiberry attached via coaxial (though not via the USB).

Just thought I would let you know in case it is useful information.

Thanks again for your help.

Regards

Paul

[ttarpd]

Hi Frank

I hit the left / right channel swapping issue yesterday.
I hadn't noticed it until I was listening to an acoustic guitar trio where the lead is playing very obviously on the right and the rest of the band fill in on the left.
It was very obvious that the channels were swapping over.

After a bit of googling / background reading I followed the instructions in this thread and the issue appears to have gone.

Many thanks,
David

[hondagx35]

Hi David,

thank you for your report.

Frank

[mattra]

Hi Frank,

I had the same issue on my Raspberry Pi3 with pi-dac+. First I thought my glorious Sennheiser was the problem. I started pulling out cables and switching them, etc... Till I found this thread.

I applied your fix. And everything sounds splendid!

So, many thanks!

Mattra

[satisfied]

Many thanks to Frank for the guidance.

I too had the channel swapping issue and this resolved it.

[Spiralgalaxy5]

Another vote of thanks to Frank for taking the trouble to post a walk-through to mitigate the Kernel problem when using RP3 with Rune - fantastic

I'm using RP3, latest Rune 0.4 beta, with 7" Touch (thanks for your work on this too Frank - screen works and looks great with Rune) and an IQAudIO DAC+. I didn't encounter the channel swap problem until I experimented with a ripped-to-flac CD which of course was presented as 16-bit data and after repeating with a raw wav file I hit the forums for info...

Related - but strictly speaking off-topic - (sorry): with the updated Kernel fixes what does this mean for the optimisation settings? I started out with OrionV3 for the IQAudIO DAC but ended up with RuneAudio as my listening preference (a tad softer/smoother, I fancied) - do I need to go through them all again? Do they do/mean anything now that the Kernel has been changed...? I had a look at the debug output when I was experimenting with each setting but couldn't see any changes (apart from the optimisation setting itself). I know it's a different thread but would like to know a bit more about optimisation choices and what they actually do...

Is there likely to be an updated Rune compatible with RP3 and all fixes included...? Definitely going to make a copy of my SD card anyhow! I'm persevering with Rune because it's OS and interface is dedicated to audio reproduction, which has got to be the way to go for a HiFi enthusiast.

Tim