i n d e x
<--back
notes




categories:

arctic | art | biology | book | compile | crypto | cryptoart | debian | email | entropy | 
ffmpeg | funk | game | ghostradio | hades | informationtheorie | internet | laser | linux | linuxaudio | 
logic | machinelearning | math | mikrotik | movie | neuralnetworks | noise | nonhuman | notes | particlephysics | 
physics | radio | radioactive | raspi | raspi5 | renameseq | rng | softwaredefinedradio | sound | stockexchange | 
tools | underinfluence | videolooper | vlc | vlf | xterm | 


search:













init.d4vlc:


https://github.com/bertrandmartel/vlc-boot

Start a init.d VLC script at boot on your Raspberry PI for example in this case to loop videos in a specific folder.

In this example, VLC is executed as the pi user since the root user is denied using VLC, see vlc_boot.sh



start_vlc.sh:

#!/bin/bash
/usr/bin/cvlc -L /media/usb1/




vlc_boot:

#!/bin/bash

case "$1" in
    start)
        echo "Starting vlc_boot service..."

        COMMAND_TO_RUN=`start-stop-daemon -S -b -m -p $PID_FILE -x $VLC_START_SCRIPT& :`
        setsid sh -c $COMMAND_TO_RUN> /dev/null 2>&1 < /dev/null

        echo -e "\E[31;33m[ OK ]\E[0m"
        ;;
    stop)
        echo "Stopping vlc_boot service..."

        start-stop-daemon -K -q -p $PID_FILE

        echo -e "\E[31;33m[ OK ]\E[0m"
        ;;
    restart|reload)
        "$0" stop
        "$0" start
        ;;
    *)
        echo $"Usage: $0 {start|stop|restart}"
        exit 1
esac

exit $?



vlc_boot.sh:   ++this is where the user is defined (pi, change when otherwise)

#!/bin/bash
export DISPLAY=:0
su pi -c start_vlc.sh&
echo $! > /tmp/vlc_boot.pid


 











install

cp vlc_boot.sh /bin/
cp start_vlc.sh /bin/
cp vlc_boot /etc/init.d/
update-rc.d vlc_boot defaults
systemctl enable vlc_boot




##videolooper
##raspi
##linux



last edited:September 19, 2024



automountusbandplayvideo:


config
doku for raspi5

https://raspberrypi.stackexchange.com/questions/66169/auto-mount-usb-stick-on-plug-in-without-uuid

Requirements

    Install pmount if not installed sudo apt-get install pmount
    This script mounts drives to /media/usb*, so make sure those folders aren't occupied. If you want a cleaner look, don't create any folders.

Udev rule

    Create file /etc/udev/rules.d/usbstick.rules

    Insert:

    ACTION=="add", KERNEL=="sd[a-z][0-9]", TAG+="systemd", ENV{SYSTEMD_WANTS}="usbstick-handler@%k"

    Save and close

Systemd service

    Create file /lib/systemd/system/usbstick-handler@.service

    Insert:

    [Unit]
    Description=Mount USB sticks
    BindsTo=dev-%i.device
    After=dev-%i.device

    [Service]
    Type=oneshot
    RemainAfterExit=yes
    ExecStart=/usr/local/bin/cpmount /dev/%I
    ExecStop=/usr/bin/pumount /dev/%I


    Save and close

Mount script

    Create file /usr/local/bin/cpmount

    Insert:

    #!/bin/bash
    if mountpoint -q /media/usb1
    then
       if mountpoint -q /media/usb2
       then
          if mountpoint -q /media/usb3
          then
             if mountpoint -q /media/usb4
             then
                 echo "No mountpoints available!"
                 #You can add more if you need
             else
                 /usr/bin/pmount --umask 000 --noatime -w --sync $1 usb4
             fi
          else
             /usr/bin/pmount --umask 000 --noatime -w --sync $1 usb3
          fi
       else
          /usr/bin/pmount --umask 000 --noatime -w --sync $1 usb2
       fi
    else
       /usr/bin/pmount --umask 000 --noatime -w --sync $1 usb1
    fi

    Give execute permission to the (root) user: chmod u+x /usr/local/bin/cpmount

    Save and close


Play Video

 mkdir ~/.config/autostart
 
 create a file > vlcstart.desktop
 
 [Desktop Entry]
 Type=Application
 Name=VLCAutostart
 Comment=VLC Autostart
 Exec=/usr/bin/vlc -f -L --no-video-title-show /media/usb1/
 Terminal=false



Reboot your RPi and test.



##videolooper
##raspi5
##linux



last edited:September 19, 2024



play-2-videos-insync-2hdmiout-raspi5:


useing x11 (wayland complained about qt, you can change the layout in raspi-config)
with vlcsync, helps a little, no framesync.

vlcsync ip-address needs to be enabled in vlc:
main interfaces, enable LUA
main interfaces -> RC, TCP 127.0.0.42

i made it with 3 autostart entries, like this >



~/.config/autostart $ cat avlcsync.desktop 
[Desktop Entry]
Type=Application
Name=VLCsyncAutostart
Comment=VLCsync
Exec=/usr/local/bin/vlcsync
Terminal=true

~/.config/autostart $ cat hdmi0.desktop 
[Desktop Entry]
Type=Application
Name=VLCAutostart
Comment=VLC Autostart
Exec=/usr/bin/vlc --fullscreen --qt-fullscreen-screennumber=0 -A alsa --alsa-audio-device sysdefault:CARD=vc4hdmi0 --no-video-title-show --loop --rc-host 127.0.0.42 /media/usb1/hdmi0.mp4
Terminal=false

~/.config/autostart $ cat hdmi1.desktop 
[Desktop Entry]
Type=Application
Name=VLCAutostart
Comment=VLC Autostart
Exec=/usr/bin/vlc --fullscreen --qt-fullscreen-screennumber=1 -A alsa --alsa-audio-device sysdefault:CARD=vc4hdmi1 --no-video-title-show --loop --rc-host 127.0.0.42 /media/usb1/hdmi1.mp4
Terminal=false

##linux
##vlc
##raspi5




last edited:July 19, 2024



playvideo-on-a-certain-hdmi-output:


automated multiscreen setup-
screennumber is 0 and 1 ,..



[Desktop Entry]
Type=Application
Name=VLCAutostart
Comment=VLC Autostart
Exec=/usr/bin/vlc --fullscreen --qt-fullscreen-screennumber=1 --loop video.mp4
Terminal=false



##linux
##raspi5
##vlc


last edited:July 18, 2024



mergepdf:


pdftk file1.pdf file2.pdf cat output output.pdf

##linux


last edited:July 18, 2024



yourRootdirIsFullbutDUtellsYouOtherwise:



https://serverfault.com/questions/275206/disk-full-du-tells-different-how-to-further-investigate

mount -o bind / /mnt

cd /mnt

du -sh *


worked very well. you are able (prop), to see some miraculous mountpoints, explained in the serverfault link.

##linux
##debian


last edited:January 18, 2024



xinput:


if your input from the trackpoint is too slow on linux, you could try to modifiy your mouse.pointer.matrix.

with xinput set-prop dev-id option-id x 0 0 0 x 0 0 0 1 where x is your variable.


xinput list-props 14
Device 'PS/2 Generic Mouse':

Coordinate Transformation Matrix (191):	
xinput set-prop 14 191 2 0 1 0 2 0 0 0 1


while missing the button 3 is solved by emulating the 3d button with the 2 one, youre still missing the 3rd:

libinput Middle Emulation Enabled (362):
xinput set-prop 14 362 1



startup .xsessionrc


this setup has flaws, in unpredicible behavior,...

##linux
##debian


last edited:January 14, 2024



ffmpegseqtoimageindex:



ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg

##ffmpeg
##linux


last edited:November 17, 2023



lvmresizepart:



resize of 2 partitions with lvm on debian 12, on a running system-

the job was to free more space for the root partition.
so, i was shrinking the home and extended the root.

home was 897G
root was 28G

20G Volume got resized.

first, B a CK UP!


umount /home

e2fsck -f /dev/mapper/zmw--server02--vg-home 

resize2fs /dev/mapper/zmw--server02--vg-home 877G (that is -20G)

lvresize -L 877G /dev/mapper/zmw--server02--vg-home

lvdisplay

lvextend -l +100%FREE /dev/mapper/zmw--server02--vg-root

resize2fs -p /dev/mapper/zmw--server02--vg-root

df -h

+
it run very smooth. the lvm seems to be very reliable. 

##linux 
##debian











last edited:November 04, 2023



imagemagickgifanim:



animate:
convert -delay 15 -loop 0 myimage*.jpg my.gif

optimize:
mogrify -layers 'optimize' -fuzz 7% mygif.gif

##linux 
##tools


last edited:November 03, 2023



ffmpegimageseqtov:


ffmpeg -framerate 60 -pattern_type glob -i '*.png' -c:v libx264 anim.mp4

##ffmpeg
##linux


last edited:May 23, 2023



sdr3:


https://github.com/SignalK/signalk-server


schau mal hier, manche muss man erst kalibrieren für dier richtige
frequenzabweichung ppd und empfindlichkeit. ich habe einen neueren im alugehäuse der ist vorgeeicht.
aber die plastikdinger vorher haben für die 15x MHz auch gereicht.
https://pysselilivet.blogspot.com/2020/05/ais-reciever-for-raspberry-pi-2-channel.html
AIS reciever for Raspberry Pi, 2 channel
pysselilivet.blogspot.com


MMSI ist verschlüsselt, also die strings sind nicht so lesbar aussser das sie mit „!AIxxx anfangen und am ende ne prüfsumme
+ausgeben. opencpn oder avnav können dann die positionen auf der karte anzeigen.



danke holger



https://support.nooelec.com/hc/en-us/articles/360005889913-NESDR-Nano-Series



##linux
##softwaredefinedradio


last edited:February 04, 2023



sdr2:





soft:

opencpn

https://github.com/jvde-github/AIS-catcher

sdrangel

Gqrx SDR




antenne:


Berechnung:

Lambda = c / F

( c = Lichtgeschwindigkeit in KM, F = Frequenz in MHz, Lambda in mm

Eine Antenne Lambda/4 von 8,7cm = 87mm entspricht also einer Wellenlänge 
von 348mm.
Dann ist die Frequenz

F = c / Lambda   =   300000 / 348  = 862,0689MHz

L = c/F; 300000/162(MHZ) = 1851/L4(antenne) = 46cm

cbra mit si einheit: 3*10^8 m/s / (162 * 10^6) 1/s =~ 1.8 m

https://www.entwicklertools.de/tools/technik-tools/antennen-rechner/

Bei dieser Frequenz ist die Antenne in elektrischer Resonanz (der 
Resonanzwiderstand ist am Kleinsten --> Serienresonanz) und kann ein 
Maximum an hochfrequenter Energie abstrahlen.
Das Stehwellenverhältniss (Verhältniss von hinlaufender zu reflektierter 
Welle) ist theoretisch 1. Dies ist beim Betrieb einer Antenne an einem 
Sender extrem wichtig.






hw safes:

https://v3.airspy.us/product/upu-fp162s/
for ais

https://www.wimo.com/de/airspy-discovery
Airspy HF+ Discovery SDR Rx

thx 2 cbra


##softwaredefinedradio
##linux


last edited:January 29, 2023



ntp-local-client:



apt install systemd-timesyncd

/etc/systemd/timesyncd.conf

NTP=xxx.xxx.xxx.xxx

systemctl restart systemd-timesyncd

systemctl status systemd-timesyncd

timedatectl status

timedatectl status
               Local time: Fri 2023-01-13 10:03:44 CET
           Universal time: Fri 2023-01-13 09:03:44 UTC
                 RTC time: Fri 2023-01-13 09:03:44
                Time zone: Europe/Vienna (CET, +0100)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no


##linux
##debian


last edited:January 13, 2023



compile:

ffmpeg -i %d.jpg -vcodec rawvideo preview.avi
ffmpeg -i %d.jpg video.mp4


##compile
##linux


last edited:January 04, 2023



theme-designer:


https://github.com/themix-project/themix-guieditor 

Graphical application for generating different color variations of Oomox (Numix-based) 
and Materia (ex-Flat-Plat) themes (GTK2, GTK3, Cinnamon, GNOME, Openbox, Xfwm), Archdroid, 
Gnome-Color, Numix, Papirus and Suru++ icon themes. Have a hack for HiDPI in gtk2. 
Its Base16 plugin also allowing a lot of app themes support like Alacritty, Emacs, GTK… 


##linux


last edited:December 29, 2022



roomeqwizard:




http://www.roomeqwizard.com/
https://th0ma5w.github.io/DIY-Room-Correction/


##linuxaudio


last edited:December 29, 2022



xtermcolors:


.Xresources


!xterm colors
xterm*foreground:       #dcdccc
xterm*background:       #1f1f1f
xterm*cursorColor:      orange
xterm*color0:           #151515
xterm*color8:           #505450
xterm*color1:           #bf7979
xterm*color9:           #f4a45f
xterm*color2:           #97b26b
xterm*color10:          #c5f779
xterm*color3:           #cdcda1
xterm*color11:          #ffffaf
xterm*color4:           #4a5463
xterm*color12:          #7d8794
xterm*color5:           #9c3885
xterm*color13:          #e628ba
xterm*color6:           #88aadd
xterm*color14:          #99ccff
xterm*color7:           #ffffff
xterm*color15:          #dedede

!xterm settings
xterm*dynamicColors:    true
xterm*utf8:             2
xterm*eightBitInput:    true
xterm*scrollTtyKeypress:true
xterm*scrollTtyOutput:  false
xterm*scrollBar:        false
xterm*loginShell:       true
xterm*jumpScroll:       true
xterm*multiScroll:      true
xterm*toolBar:          false
xterm*charClass:        33:48,35-38:48,39:43,42-47:48,58-59:48,61:48,63-64:48,126:48
xterm*geometry:         125x43+0+0
xterm*faceName:         Monospace
xterm*faceSize:         12
xterm*saveLines:        1000




##linux 
##xterm


last edited:December 29, 2022



xtermcolors2:



/bin/sh -c "exec xterm -fa 'Monospace' -bg '#1f1f1f' -fg '#dcdccc' -fs 12 -sl 512 -u8 -geometry 125x43+0+0"


##linux 
##xterm


last edited:December 29, 2022



noiselevel:


#linux #noise

https://www.berrybase.at/raspberry-pi/raspberry-pi-computer/usb-geraete/usb-mini-mikrofon
##linux 
##noise


last edited:December 29, 2022



rename.sh:

#/bin/bash
index=0;
for name in *.jpg
do
    mv "${name}" "${index}.jpg"
    index=$((index+1))
done




##linux 
##renameseq


last edited:December 29, 2022



serial_com_arduino_puredata:

nice pd patch, works very well

http://kiilo.org/tiki/tiki-index.php?page=Arduino-PureData-MessageSystem">http://kiilo.org/tiki/tiki-index.php?page=Arduino-PureData-MessageSystem

ArduinoPuredataMessageSystem (->localcopy)




##linuxaudio 
##tools


last edited:December 29, 2022



exifdata:

exiftool -all= image.jpg



##linux 
##tools


last edited:December 29, 2022



xterm:

mem:

xterm -fn 9x15 -fg yellow -bg black -sl 512 -maximized -u8

 

fullscreen geht auch

xterm -fullscreen

und fullscr und execute
xterm -fullscreen -e ./xyz.sh         // opt. -hold



##linux 
##xterm


last edited:December 29, 2022



test_the_key:

http://www.phy.duke.edu/~rgb/General/dieharder.php">http://www.phy.duke.edu/~rgb/General/dieharder.php


##rng 
##linux 
##entropy


last edited:December 29, 2022



systems_entropy:

watch -n .1 cat /proc/sys/kernel/random/entropy_avail


##rng 
##entropy 
##linux


last edited:December 29, 2022



sdr:

http://gnuradio.org/redmine/projects/gnuradio/wiki/InstallingGR">http://gnuradio.org/redmine/projects/gnuradio/wiki/InstallingGR

http://sdr.osmocom.org/trac/wiki/rtl-sdr">http://sdr.osmocom.org/trac/wiki/rtl-sdr

http://www.rtlsdr.org/">http://www.rtlsdr.org/

http://www.oz9aec.net/index.php/gnu-radio/gqrx-sdr">http://www.oz9aec.net/index.php/gnu-radio/gqrx-sdr

http://www.superkuh.com/rtlsdr.html">http://www.superkuh.com/rtlsdr.html

----bugs/hacks
http://mono-for-android.1047100.n5.nabble.com/Some-sln-files-opening-as-hex-td5688360.html">http://mono-for-android.1047100.n5.nabble.com/Some-sln-files-opening-as-hex-td5688360.html

 

--satelite images

http://www.oz9aec.net/index.php/gnu-radio/gnu-radio-blog/451-howto-receive-and-decode-noaa-apt-images-with-funcube-dongle-and-gqrx">http://www.oz9aec.net/index.php/gnu-radio/gnu-radio-blog/451-howto-receive-and-decode-noaa-apt-images-with-funcube-dongle-and-gqrx

 

--radar
http://www.virtualradarserver.co.uk/Download.aspx">http://www.virtualradarserver.co.uk/Download.aspx

http://www.rtl-sdr.com/adsb-aircraft-radar-with-rtl-sdr/">http://www.rtl-sdr.com/adsb-aircraft-radar-with-rtl-sdr/




##linux 
##softwaredefinedradio 
##funk


last edited:December 29, 2022



python_dsp:

schaut ganz brauchbar aus die pydsp.
http://lac.linuxaudio.org/2011/papers/40.pdf">lac.linuxaudio.org/2011/papers/40.pdf



##linux 
##linuxaudio 
##tools


last edited:December 29, 2022



pyo_python_dsp:

first code:
#!/usr/bin/python
from pyo import *

n = 0
s = Server(duplex=1)

s.setInputDevice(2)
s.boot()

inp = Input(chnl=[0], mul=0.5) # chnl=[0,1] for stereo input
b = Thresh(inp, threshold=0.4, dir=0)
ti = Timer(b, b)

def printer():
        global n
        n = n + 1

        print 'trigger', n , 'time', str(ti.get(all)).strip('[]')

tf = TrigFunc(b, printer)

t = LinTable([(0,0), (50,1), (250,.3), (8191,0)])
env = TrigEnv(b, table=t, dur=.5, mul=.3)
sine = Sine(freq=400, mul=env).out()

s.gui(locals())


first printouts with delta t between threshold triggers ( linear from an LFO )

trigger 1 time 0.0017687075305730104
trigger 2 time 0.0017687075305730104
trigger 3 time 0.01598639413714409
trigger 4 time 0.019999999552965164
trigger 5 time 0.0001360544265480712
trigger 6 time 0.0001360544265480712
trigger 7 time 0.014693877659738064
trigger 8 time 0.0056009069085121155
trigger 9 time 0.00018140589236281812
trigger 10 time 0.00018140589236281812
trigger 11 time 0.01984127052128315
trigger 12 time 0.005328798200935125
trigger 13 time 0.00018140589236281812
trigger 14 time 0.00018140589236281812
trigger 15 time 0.01807256229221821
trigger 16 time 0.019977323710918427
trigger 17 time 0.020022675395011902
trigger 18 time 0.019977323710918427
trigger 19 time 0.02013605460524559
trigger 20 time 4.535147309070453e-05
trigger 21 time 4.535147309070453e-05
trigger 22 time 0.014580498449504375
trigger 23 time 0.019977323710918427
trigger 24 time 6.80272132740356e-05
trigger 25 time 6.80272132740356e-05
trigger 26 time 0.019909296184778214
trigger 27 time 0.005351474042981863
trigger 28 time 0.014648525975644588
trigger 29 time 0.005056689493358135
trigger 30 time 0.014920635148882866
trigger 31 time 1.2613831758499146
trigger 32 time 0.004036281257867813
trigger 33 time 0.014943310990929604
trigger 34 time 0.020068027079105377
trigger 35 time 0.005215419456362724
trigger 36 time 0.014716553501784801
trigger 37 time 0.005374149885028601
trigger 38 time 0.01462585013359785
trigger 39 time 0.005374149885028601
trigger 40 time 0.01478458009660244
trigger 41 time 4.535147309070453e-05
trigger 42 time 4.535147309070453e-05
trigger 43 time 0.0052607711404562
trigger 44 time 0.014761905185878277
trigger 45 time 0.019909296184778214
trigger 46 time 0.019977323710918427
trigger 47 time 0.005238095298409462
trigger 48 time 0.014761905185878277
trigger 49 time 0.00528344651684165
trigger 50 time 0.01473922934383154
trigger 51 time 0.005328798200935125
trigger 52 time 0.014671201817691326
trigger 53 time 6.80272132740356e-05
trigger 54 time 6.80272132740356e-05





##linux 
##linuxaudio 
##tools


last edited:December 29, 2022



graphics_magic:

 

als lib fuer quantenkino/ghostradio -> laut oliver laeuft die lib effizienter als imagemagick

http://www.graphicsmagick.org/perl.html">http://www.graphicsmagick.org/perl.html

 


##linux 
##tools


last edited:December 29, 2022



gnu_20_random_number_distributions:

http://www.gnu.org/software/gsl/manual/html_node/Random-Number-Distributions.html#Random-Number-Distributions


##linux 
##crypto 
##rng


last edited:December 29, 2022



gpg_revoke:

$ gpg --output revocation-certificate.asc --gen-revoke 86C30530



§ gpg --import revocation-certificate.asc


$ gpg --list-keys 86C30530


optional:
gpg --send-keys 86C30530





##crypto 
##linux 
##tools


last edited:December 29, 2022



ghostradio_python_script:

maex@:~/ghostradio/code$ more ghostradio.py 
import numpy as np
import cv2
import os, sys, struct, shutil, time



print "configuring video dev"
# 1 = composite 0 = tuner usw
os.system("v4l2-ctl -i 1")


cap = cv2.VideoCapture(0)

#resolution
ret = cap.set(3,720) 
ret = cap.set(4,576)



timestr = time.strftime("%Y%m%d-%H%M%S")

grname = "gr-random-bin"+timestr


fd = os.open(grname,os.O_RDWR|os.O_CREAT)


while(True):
    # Capture frame-by-frame
    ret, frame = cap.read()

    # Our operations on the frame come here
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

   
    for x in xrange(1, 12):  # zeilen anzahl und position 1 = start 2 =laenge (bei 640x480 ist das theoretisch 1, 479)
        for y in xrange(1, 18):  # scanrange 1 start 2 ende (zb fuer 640x480 ist das dann 1, 640)


                output = gray[x, y]
#               output = bin(gray[x ,y])[2:].zfill(8)
#               print bin(gray[x ,y])[2:].zfill(8)
                output = chr(output)
                os.write(fd, output)  

#               change to this to write down numbers:
#               output = str(output)
#               os.write(fd, output+';')


    # Display the resulting frame
    cv2.imshow('frame',gray)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

    #checking filesize > 2gb close file open new filename+timestamp    
    statinfo = os.stat(grname)
    b = statinfo.st_size
    b = ((b /1024)/1024)

    if b > 2000:
        os.close(fd)
        shutil.move('gr-random-bin'+timestr,'random')
        timestr = time.strftime("%Y%m%d-%H%M%S")
        grname = "gr-random-bin"+timestr
        fd = os.open("gr-random-bin"+timestr,os.O_RDWR|os.O_CREAT)

# When everything done, release the capture
os.close(fd)
cap.release()
cv2.destroyAllWindows()
maex@:~/ghostradio/code$




##ghostradio 
##linux 
##entropy 
##cryptoart


last edited:December 29, 2022



download:

wget https://yt-dl.org/downloads/latest/youtube-dl


##linux 
##tools


last edited:December 29, 2022



deep_sweep:

https://criticalengineering.org/projects/deep-sweep/


##art 
##linux 
##crypto


last edited:December 29, 2022



debian10:


apt remove timidity



loest das soundproblem mit pulsaudio / no cards found







trackpoint beschleunigung



xinput --list --short
xinput --list-props "Elan TrackPoint"
xinput --set-prop 10 301 0.8000

schoen schnell fuer 2.5k displays, 1.0 ist max



##debian 
##linux 
##tools


last edited:December 29, 2022



code_von_franzi:

code von franzi



imagemagick



#!/usr/bin/perl

use Image::Magick;



$zaehler = 2;
$spalte = 0;
$zeile = 0;
$e = 1;

for ($i = 0; $i <= 255; $i++)
  {

my $image = Image::Magick->new;

$image->Set(size=>'256x256');
$image->ReadImage('xc:white');
for ($sp = 0; $sp <= 256*256; $sp++)
  {
            if ($spalte == 256)
                 {
                  $spalte = 0;          # AN DEN ANFANG ZURUECK
                  $zeile = $zeile + 1;  # EINE ZEILE RUNTER
#                 print " Zeile $zeile / 256 \t Nr. $i / 255 \t $farbe \n";
                 }
#        $e1=1/$e;
#        $e=1/(1+$e1);
        $e=1/$zaehler;
#        print "$e\t1/$zaehler\n";
        $rot=substr($e,8,2);
        $gruen=substr($e,10,2);
        $blau=substr($e,12,2);
        $farbe = "#".$rot.$gruen.$blau;
        $image->Draw(primitive=>'point', fill=>"$farbe", points=>"$zeile,$spalte");
        $spalte = $spalte + 1;
        $zaehler = $zaehler + 1;
        # print ">>>$e>$rot--$gruen--$blau>$farbe>>$spalte,$zeile\n";
  }
 $zeile = 0;
 #$image->display();
 $image->Write("image_1n65k$i.jpg");

 print "image_65k$i.jpg\n";
 }






##ghostradio 
##linux


last edited:December 29, 2022



baudline_umm6:


parec --format=s16le --channels=1 --latency-msec=5 | ./baudline -stdin





##linuxaudio 
##tools


last edited:December 29, 2022



aircraft_radar_application:

https://github.com/antirez/dump1090


##linux 
##funk 
##radio


last edited:December 29, 2022



commands:


inxi -b

inxi -pluFxxrm


for file in *.png; do convert $file -rotate 90 rotated-$file; done


for file in *; do convert $file -resize x1440 resized-$file; done



bc:
scale=4



linux
##linux


last edited:December 29, 2022



app1_threshold_recorder_puredata:

app1

linux | linux audio
##linuxaudio


last edited:December 29, 2022



lac_2013_links:

 

linux audio:

http://kokkinizita.linuxaudio.org/linuxaudio/index.html">http://kokkinizita.linuxaudio.org/linuxaudio/index.html

ambisonics

http://kokkinizita.linuxaudio.org/ambisonics/index.html">http://kokkinizita.linuxaudio.org/ambisonics/index.html

netpd

http://www.netpd.org">http://www.netpd.org

zita scope

> 2 be developed


linuxaudio
##linuxaudio


last edited:December 29, 2022