It's not about 64bit audio data playback.
It's about 64bit processing. That's a different subject.
Things can and many get more efficient. From what I read 20-30% performance gain in certain areas can be expected.
Considering the extremely poor RPI performance on e.g. HQ resampling. I'd very well appreciate such a boost.
I'll run the benchmarks if I'm done with it.
And it's not that there are no full (kernel and userspace) 64bit RPI OSes around. Actually they are around for quite a while.
The issue was the mainlinekernel and Uboot on these 64bit systems.
The PI without the PI kernel IMO looses it's key selling point. Since Pi4 the RPI folks concentrate much more on the 64-bit PI kernel.
That changes the game.
I want to say thanks to the PcP team for their support in getting my USBBridge Signatures up on PcP the last several days. I'm big into small op systems and player footprints and PcP fits that perfectly. AND they have made getting this running on their new Beta a pleasure!
Greg in Mississippi
P.S. See my posts #588 & #594 in Allo's Shanti / USBBridge Sig thread:
Shanti Dual LPS 5V/3A , 5V/1.5A
Basically, the USBBridge Signature used as an RPi-substitute I2S source is STUNNING. Definitely as large of a step above my linear-regulated-modified RPi 2B as they were above a stock RPi. HIGHLY RECOMMENDED!
If you'd like to promote/introduce that product I'd really appreciate if you'd open a new thread.
I'd love to comment. I'd give my 2cts why people better think twice to go for such a product!
Perhaps you could share your experiences on that SW side in another thread! Looking forward to it.
Great to have you around.
Just FYI - since we've been discussing it recently.
I finally manged to build a complete 64bit ArchLinux installation - kernel & userland.
The RPI kernel is prerequisite to get our beloved audio HATs going.
Since most 64bit systems come with the mainline kernel most audio devices
and a lot of other things wouldn't be working anymore. The RPI kernel
is a must and it's gonna be that way for quite a while.
Let see if Paul (and TinyCore) can catch up with a 64bit userland sooner or later. ;)
Have you had the chance to do any 32/64 bit benchmarking? Then of course does it make any real audible changes? Curious if the effort is really worth it.
For sure it's more then just a simple swap. And there's not much info around. Lot's off digging.
* rewriting/updating all my scripts
* gcc CFLAGS are different
* I tried to compile flac/libflac and I'm not sure yet if and how NASM works on 64bit ARM.
* and then ArchLinux doesn't offer a 64-bit userland for PI-4.
I think you'd do good to not waste too much time on it for know.
You'd obviously would have to provide a separate 64bit image, just for PI3/4. Not sure if you really want to go down that road.
Your 64bit kernel und 32bit userland is a stable and extremely well working solution. IMO no need to step up in the near future.
Hello all, hope you're good in these bad days!
I have a question/remark: I used Picore with Hifiberry DAC+Pro for a long time with LMS installed on the same Rpi, I changed my speakers recently and the sound quality was not good at all.
Then I tried Max2Play and Dietpi with only Squeezelite and LMS running (should be equivalent to Picore then): the sound quality is much better than Picore (I had no voices, like no medium frequencies).
Does someone have an idea of why I find so bid sound quality difference between Picore and the two other (quite equivalent in sond quality)?
Did you change your amplifier too? Nothing in the OS should have done that, unless you were running AlsaEQ and somehow the mixer settings got changed.
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