|
|
Post by speedysteve on Jan 4, 2019 22:24:18 GMT
Excellent stuff, Steve. These config.txt settings improve sound quality for me. They underclock and undervolt the Pi for lower noise. You should be able to hear the difference with I 2S connection, I can certainly hear it with S/PDIF. gpu_mem=16
arm_freq=666
sdram_freq=333
core_freq=400
gpu_freq=333
over_voltage=-10
over_voltage_sdram=-4
hdmi_blanking=1
force_turbo=1
boot_delay=1
max_usb_current=1Brill! I take it, I just edit the config file and add them or do I have to PuTTY them in? Where's my PuTTY knife?  |
|
|
|
Post by MartinT on Jan 4, 2019 22:27:25 GMT
You can edit them into config.txt in Windows if you put the SD card into your computer.
I think I chose unique settings but make sure there are no duplicates. If you edit them with PuTTY, they will take effect the next time you boot the Pi.
If you get any instability, back off the under-voltage settings a little and try again. They're quite stable for me. Opens up the soundstage width and depth and gives you more insight.
EDIT: by backing off, I mean...
over_voltage=-8
over_voltage_sdram=-2
|
|
|
|
Post by speedysteve on Jan 4, 2019 23:18:42 GMT
Here's my RPi / Kali ->I2S lash up. Much improvement / refinement potential, both in settings and HW to come.. connections and copper Kali reclocker is a bit of a light show. When not playing  When playing sample rates are displayed.   So it's displaying 44.1 / Lock / 44.1 if my eyes aren't playing tricks on the tiny very bright LEDs. Just as it should be. |
|
|
|
Post by Slinger on Jan 5, 2019 0:12:02 GMT
Just to muddy the water, my config.txt contains a few more changes on top of the ones Martin has used...
|
|
|
|
Post by John on Jan 5, 2019 5:40:17 GMT
Great news
I was reading on another forum that Allo were also not responding to him so presume they are on Holiday till Monday
|
|
|
|
Post by MartinT on Jan 5, 2019 11:29:36 GMT
Slinger are those individual SDRAM settings required in addition to the over_voltage_sdram settings? I shall try those HDMI settings. Surely that dtoverlay setting is not your current one?
|
|
|
|
Post by Slinger on Jan 5, 2019 13:33:38 GMT
Slinger are those individual SDRAM settings required in addition to the over_voltage_sdram settings? I shall try those HDMI settings. Surely that dtoverlay setting is not your current one? From what I could gather the over_voltage_sdram_p=-5, over_voltage_sdram_i=-14, and over_voltage_sdram_c=-6 settings do serve to "fine-tune" the whole shebang. I could be wrong, I'm certainly no expert, but they definitely have no adverse effect that I can detect, so they stay. Good spot on the dtoverlay  I'd just copied and pasted my old backup. I'd forgotten to update it since putting the "pro" in. It now reads " dtoverlay=hifiberry-digi-pro" DOH! It's a good job there wasn't a Volumio update or I'd have been scratching my head trying to work out why "it" had broken my Volumio. |
|
|
|
Post by speedysteve on Jan 5, 2019 14:46:13 GMT
Interesting about the tweaks. Thanks for those. I've got WinSCP working and PuTTY too. I'm trying Martin's settings first  Going with the conservative settings at the moment. I've had enough no sound / weird sound so far on the RPi journey to last me a while.. Still can't get that SD card back caused by the Allo Piano 2.1 DAC setting in Volumio Tried in Windows Disk Management (worked fine for the other one..) also Android phone as well - wouldn't touch it. |
|
|
|
Post by MartinT on Jan 5, 2019 17:10:20 GMT
I've had a couple of SD cards go dead for no apparent reason and they remained unrecoverable. No choice but to bin them.
I used all of Paul's settings except the special sdram p/i/c ones today and they worked fine. The Pi sounds better than ever!
|
|
|
|
Post by speedysteve on Jan 5, 2019 17:35:52 GMT
Is it possible to verify in some way that the updated config file is being used?
|
|
|
|
Post by MartinT on Jan 5, 2019 17:56:21 GMT
If you change the selected DAC Volumio writes an entry to it as dtoverlay=(your DAC) which is confirmation that the config.txt file is being read at boot and being written to by Volumio.
|
|
|
|
Post by speedysteve on Jan 5, 2019 18:29:03 GMT
If you change the selected DAC Volumio writes an entry to it as dtoverlay=(your DAC) which is confirmation that the config.txt file is being read at boot and being written to by Volumio. Ooh don't wanna do that to Allo Piano 2.1 SD card death! |
|
|
|
Post by MartinT on Jan 5, 2019 19:04:56 GMT
Maybe not that one |
|
|
|
Post by MikeMusic on Jan 6, 2019 10:42:16 GMT
I've had a couple of SD cards go dead for no apparent reason and they remained unrecoverable. No choice but to bin them. I used all of Paul's settings except the special sdram p/i/c ones today and they worked fine. The Pi sounds better than ever! That would really tee me right off. |
|
|
|
Post by MartinT on Jan 6, 2019 12:15:42 GMT
Not much quality control with ever cheaper SD cards these days, Mike. All you can do is buy a quality brand like Sandisk or Kingston and hope.
I switch two around (for whenever a new version of Volumio is released so that I always have a good one): a Sandisk and a Maplin - perhaps I should keep the latter as a collectible?
|
|
|
|
Post by MikeMusic on Jan 6, 2019 12:20:55 GMT
I could do with a spare so went looking
Thought they would be a couple of quid now. Not so
What is a good, safe, minimum spec you would go for ?
Might I need less ?
|
|
|
|
Post by MartinT on Jan 6, 2019 12:28:57 GMT
I would always buy a Class 10 from one of the two vendors mentioned above. Being a higher spec, they have better QC.
|
|
|
|
Post by MikeMusic on Jan 6, 2019 12:34:20 GMT
|
|
|
|
Post by MartinT on Jan 6, 2019 12:36:56 GMT
Make sure it's the right size - that looks like a full size card. The 10 in a circle denotes the class/speed.
|
|
|
|
Post by MikeMusic on Jan 6, 2019 14:50:55 GMT
Thanks
Need one for the camera first. Will check the size I have
|
|
I'd just copied and pasted my old backup. I'd forgotten to update it since putting the "pro" in. It now reads "dtoverlay=hifiberry-digi-pro" DOH! 
