Tweaking the audio performance Rpi3

Raspberry Pi related support

Re: Tweaking the audio performance Rpi3

Postby andrea » 15 Jun 2017, 11:52

Hi all,
I'm new to this forum.
I installed Rune 0.4 and applied all the changes in this list

chattr -i /etc/mpd.conf
Nano /etc/mpd.conf
Add this to the active source:
format "192000:24:2"
samplerate_converter "soxr very high"
then :
Chattr +i /etc/mpd.conf

Example Content
audio_output {
name "bcm2835 ALSA_1"
type "alsa"
device "hw:1,0"
dsd_usb "yes"
auto_resample "no"
auto_format "no"
}

audio_output {
name "USB Audio DAC"
type "alsa"
device "hw:0,0"
dsd_usb "yes"
auto_resample "no"
auto_format "no"
format "192000:16:2"
samplerate_converter "soxr very high"
enabled "yes"
}


Changes to /boot/config.txt
Rune Frost tells me that the changes in this file to the Dram and frequency settings add an 'analogue' sound to the output. Always a good thing... :-)
Note: some of these values may be already present.

nano /boot/config.txt

max_usb_current=1

# memory options
#gpu_mem=64
gpu_mem=16

# Overclocking options
force_turbo=1

avoid_pwm_pll=1
arm_freq=666
over_voltage=-10
gpu_freq=333

# sdram overclock
sdram_freq=333

sdram_schmoo=0x02000020
over_voltage_sdram_p=-5
over_voltage_sdram_i=-14
over_voltage_sdram_c=-6

disable_pvt=1

# HDMI disable
hdmi_blanking=2

Please note: Rune Frost advises that when the ARM voltage is lower than -7, the integrated wi-fi will stop working. If wi-fi is required, you can still use an edimax (or similar) dongle for wi-fi. But going below -7 is quite noticeable.. perhaps it is because of the internal wifi/bluetooth is also then disabled :-)

It should be noted that the best internet link is always an ethernet cable. If your router is not near your hi-fi, a good quality powerplug extender works well for the author, e.g. TP-Link AV500, or similar.


Changes to /boot/cmdline.txt
N.B. Some of these parameters are already present.

Nano /boot/cmdline.txt
dwc_otg.microframe_schedule=0
dwc_otg.nak_holdoff_enable=1
dwc_otg.fiq_fix_enable=0
dwc_otg.microframe_schedule=1
smsc95xx.turbo_mode=N
dwc_otg.lpm_enable=0

Orion Optimize Mods (/var/www/command/orion_optimize.sh)
nano /var/www/command/orion_optimize.sh
##################
# common startup #
##################
#if [ "$PID" != null ]; then
#echo "Set priority for: cifsd"
#renice -20 $PID
#fi
cifsprio pid=$(pidof cifsd)
echo "Set normal priority for: rune_SY_wrk"
renice 20 $(pgrep rune_SY_wrk)
echo "Set normal priority for: rune_PL_wrk"
renice 20 $(pgrep rune_PL_wrk)
echo "Set normal priority for: smbd"
renice 19 $(pidof smbd)
echo "Set normal priority for: nmbd"
renice 19 $(pidof nmbd)
#runeFrost
renice -10 -p 3
renice -10 -p 12
renice -10 -p 16
renice -10 -p 20

Also in /var/www/command/orion_optimize.sh
Find the Sound Profiles section (see below), then modify the ‘# mod 3’ section to look like following lines. This content replaces the original parameters so the original lines must be deleted. Alternatively, they can be commented out by putting a ‘#’ at the start of each line.

##################
# Sound Profiles
##################
# mod 3
if [ "$1" == "OrionV2" ]; then
# runefrost version
ifconfig eth0 mtu 9000
ifconfig wlan0 mtu 9000
ifconfig eth0 txqueuelen 4000
ifconfig wlan0 txqueuelen 4000
echo 0 > /proc/sys/vm/swappiness
modKschedLatency hw=$2 s01=120000 s02=2000000 s03=2000000 s04=2000000 s05=2000000 s06=2000000 s07=2000000 s08=2000000 s09=2000000 s10=2000000 u01=2 u02=2 u03=2 u04=2 u05=2 u06=2 u07=2 u08=2 u09=2 u10=2
#runeFrost
echo -n performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo -n performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo -n performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo 1000000 > /proc/sys/kernel/sched_latency_ns
echo 100000 > /proc/sys/kernel/sched_min_granularity_ns
echo 25000 > /proc/sys/kernel/sched_wakeup_granularity_ns
echo 1 > /proc/sys/kernel/hung_task_check_count
echo 20 > /proc/sys/vm/stat_interval
echo -1 > /proc/sys/kernel/sched_rt_runtime_us
echo 5 > /proc/sys/vm/dirty_background_ratio

sleep 2
mpdprio_nice
echo "(OrionV2) sound signature profile"
fi


The sound is great, the best ever made with my Rpi3.

I only have a doubt: if I did not understand, these settings should allow MPD / SOXR to use only one "core" (and always the same!) While looking at using the "top" command, I notice that the Core used is not always the same, but always changes every few seconds.
When I used Moode, I remember to have "isolated" a core to use it from MPD and, to do this, I put in a configure.txt (or cmdline.txt) an "isolate_cpu = 3" (or something similar) statement In the MPD executed script "-c 3" (or something similar).
In the various changes I did on Rune I did not encounter anything like this: I forgot something I did? What are the points that point to the CPU3 system use system?

Thank you all for the great work done
User avatar
andrea
 
Posts: 2
Joined: 15 Jun 2017, 10:00

Re: Tweaking the audio performance Rpi3

Postby pietpara » 04 Sep 2017, 22:22

Hi,

It has been a while since I installed the latest image for the RaspTouch and was wondering if there is a new one and where to find it. I tried finding it on the audiophonics forum but since most is in French I couldn't find anything referring to images for the rasptouch.
Is there a standard support site for it?
Or is there a known documented procedure to install the latest from rune?

Thank you
Pietpara
pietpara
 
Posts: 48
Joined: 12 Jan 2017, 21:17

Re: Tweaking the audio performance Rpi3

Postby Vhond » 04 Jun 2019, 11:04

Discovery wrote:I've compiled a list of all of Rune Frost's changes for the RPi3. Please see below.



To Use SOXR Upscaler (optional – may not work well with all DACs)
Use SOXR to upscale to 192Khz/16bit ( this really depends on the DAC, some will get better performance as the SOXR is a better resampler than some of the integrated ones).

The chattr –i command must precede the edit and the chattr +I must follow the edit. The mpd.conf file is locked for editing - the first chattr command unlocks it; the second locks it after changes.

Please note – the ‘active source’ is usually the section that has ‘enabled “yes”’ in it. In the example below, this is my USB Audio DAC – the second section, where the lines have been added.

Note: Other upsampling values also work, e.g. 96000:16:2

chattr -i /etc/mpd.conf
Nano /etc/mpd.conf

Add this to the active source:
format "192000:24:2"
samplerate_converter "soxr very high"

then :
Chattr +i /etc/mpd.conf

Example Content
audio_output {
name "bcm2835 ALSA_1"
type "alsa"
device "hw:1,0"
dsd_usb "yes"
auto_resample "no"
auto_format "no"
}

audio_output {
name "USB Audio DAC"
type "alsa"
device "hw:0,0"
dsd_usb "yes"
auto_resample "no"
auto_format "no"
format "192000:16:2"
samplerate_converter "soxr very high"

enabled "yes"
}


Changes to /boot/config.txt
Rune Frost tells me that the changes in this file to the Dram and frequency settings add an 'analogue' sound to the output. Always a good thing... :-)
Note: some of these values may be already present.

nano /boot/config.txt

max_usb_current=1

# memory options
#gpu_mem=64
gpu_mem=16

# Overclocking options
force_turbo=1

avoid_pwm_pll=1
arm_freq=666
over_voltage=-10
gpu_freq=333

# sdram overclock
sdram_freq=333

sdram_schmoo=0x02000020
over_voltage_sdram_p=-5
over_voltage_sdram_i=-14
over_voltage_sdram_c=-6

disable_pvt=1

# HDMI disable
hdmi_blanking=2


Please note: Rune Frost advises that when the ARM voltage is lower than -7, the integrated wi-fi will stop working. If wi-fi is required, you can still use an edimax (or similar) dongle for wi-fi. But going below -7 is quite noticeable.. perhaps it is because of the internal wifi/bluetooth is also then disabled :-)

It should be noted that the best internet link is always an ethernet cable. If your router is not near your hi-fi, a good quality powerplug extender works well for the author, e.g. TP-Link AV500, or similar.


Changes to /boot/cmdline.txt
N.B. Some of these parameters are already present.

Nano /boot/cmdline.txt
dwc_otg.microframe_schedule=0
dwc_otg.nak_holdoff_enable=1
dwc_otg.fiq_fix_enable=0
dwc_otg.microframe_schedule=1
smsc95xx.turbo_mode=N
dwc_otg.lpm_enable=0


Orion Optimize Mods (/var/www/command/orion_optimize.sh)
nano /var/www/command/orion_optimize.sh
##################
# common startup #
##################
#if [ "$PID" != null ]; then
#echo "Set priority for: cifsd"
#renice -20 $PID
#fi
cifsprio pid=$(pidof cifsd)
echo "Set normal priority for: rune_SY_wrk"
renice 20 $(pgrep rune_SY_wrk)
echo "Set normal priority for: rune_PL_wrk"
renice 20 $(pgrep rune_PL_wrk)
echo "Set normal priority for: smbd"
renice 19 $(pidof smbd)
echo "Set normal priority for: nmbd"
renice 19 $(pidof nmbd)
#runeFrost
renice -10 -p 3
renice -10 -p 12
renice -10 -p 16
renice -10 -p 20


Also in /var/www/command/orion_optimize.sh
Find the Sound Profiles section (see below), then modify the ‘# mod 3’ section to look like following lines. This content replaces the original parameters so the original lines must be deleted. Alternatively, they can be commented out by putting a ‘#’ at the start of each line.

##################
# Sound Profiles
##################
# mod 3
if [ "$1" == "OrionV2" ]; then
# runefrost version
ifconfig eth0 mtu 9000
ifconfig wlan0 mtu 9000
ifconfig eth0 txqueuelen 4000
ifconfig wlan0 txqueuelen 4000
echo 0 > /proc/sys/vm/swappiness
modKschedLatency hw=$2 s01=120000 s02=2000000 s03=2000000 s04=2000000 s05=2000000 s06=2000000 s07=2000000 s08=2000000 s09=2000000 s10=2000000 u01=2 u02=2 u03=2 u04=2 u05=2 u06=2 u07=2 u08=2 u09=2 u10=2
#runeFrost
echo -n performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo -n performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo -n performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor
echo 1000000 > /proc/sys/kernel/sched_latency_ns
echo 100000 > /proc/sys/kernel/sched_min_granularity_ns
echo 25000 > /proc/sys/kernel/sched_wakeup_granularity_ns
echo 1 > /proc/sys/kernel/hung_task_check_count
echo 20 > /proc/sys/vm/stat_interval
echo -1 > /proc/sys/kernel/sched_rt_runtime_us
echo 5 > /proc/sys/vm/dirty_background_ratio

sleep 2
mpdprio_nice
echo "(OrionV2) sound signature profile"
fi



Somebody tried these adjustments for Rune 0.5b? Maybe other recommendations ('cause this topic hasn't been updated for more than 1 year ;) )
Vhond
 
Posts: 48
Joined: 11 Apr 2017, 18:06

Re: Tweaking the audio performance Rpi3

Postby Vhond » 09 Aug 2019, 14:40

I can confirm these alterations still work for beta 0.5, but it seems after every gitpull the orion_optimize.sh file is overwritten (to default)?
Vhond
 
Posts: 48
Joined: 11 Apr 2017, 18:06

Re: Tweaking the audio performance Rpi3

Postby joe63 » 21 Dec 2020, 10:15

hello guys
I am a new user of RuneAudio and I must confess that I find it very interesting and well made, specially as for the graphic layout and effective use of functions. After these tweaks the sound perception is surely different, maybe better, I don't know exactly :P . Thanks a lot for everyone's efforts ;)
So far I have used RuneAudio 0.5b and modified the files config.txt and cmdline.txt, after that I edited the file orion_optimize.sh to change the parameters related to the sound profiles.
Now I am trying to follow the same way in Rune Audio+R e6 but unfortunately I cannot find and edit the file at issue :P
I wonder if those changes are already set in this new version. If not, how is it possible to tweak the sound profiles here? Has anyone tried them out?
thanks in advance :)
joe63
 
Posts: 4
Joined: 18 Dec 2020, 10:07

Re: Tweaking the audio performance Rpi3

Postby cmh714 » 21 Dec 2020, 18:21

I think if you go to System and scroll down to Environment section, you can find the Sound profiles and edit them there...

GL!
cmh714
 
Posts: 453
Joined: 04 May 2014, 03:06

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