Meanwhile, it will clock the file using the correct crystal (there are 2), fixing the problems outlined in the beginning. Using the NDKs it will reclock the buffered data OUTSIDE the fpga (since fpgas introduce about 200ps of jitter) and provide a MCLK/BCLK that is direct from crystal, providing a jitter-free (almost) to your DAC. Second, the FPGA will read the incoming stream, will buffer the DATA 0.7s while discarding the incoming clocks.
#Minimserver sparky sbc series#
Some SBCs (like RPIs) can output only 48Khz, so imagine the degradation of the sound that was recorded at a different frequency.įirst, it has a very low jitter NDK crystal feed by LDOs in series for ultra quiet power supply. Simply put: a better crystal means a better sound! Most SBCs use a very cheap crystal with lots of jitter in order to save costs.įurthermore, there are 2 kinds of frequencies for digital files: 44.1Khz (wave files) and 48khz (streamed music). The accuracy of this crystal is very important in how well the DAC will transform the digital signal into analog sounds. rvice (33ms)Īfter=network-online.target dietpi-boot.Every SBC has a crystal that it used to send digital signals to your DACs. Graphical.target reached after 36.390s in userspaceRaspbian GNU/Linux 10 (buster) DietPi (Linux 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:) arm 19 23:16:42 DietPi gmediarender: INFO Access /upnp/rendertransportSCPD.xml (text/xml) you help me please ? This issue is very frustrating. 19 23:16:42 DietPi gmediarender: INFO Access /upnp/rendercontrolSCPD.xml (text/xml) len=13317 (attempt to access non-existent '/upnp/grender-128x128.png 19 23:16:42 DietPi gmediarender: INFO 404 Not found. (attempt to access non-existent '/upnp/grender-64圆4.png') 19 23:16:40 DietPi gmediarender: INFO Access /upnp/rendertransportSCPD.xml (text/xml) len=15697 19 23:16:40 DietPi gmediarender: INFO Access /upnp/rendercontrolSCPD.xml (text/xml) len=13317 19 23:16:40 DietPi gmediarender: INFO 404 Not found. 19 23:16:39 DietPi gmediarender: INFO Access /upnp/rendertransportSCPD.xml (text/xml) len=15697
19 23:16:39 DietPi gmediarender: Ready for rendering. └─1370 /usr/local/bin/gmediarender -u b56c9bf7-dc42-42f1-811f-d1def6a26e5a -f DietPi -gstout-audiosink=alsasink -gstout-audiodevice=sysdefault -gstout. Process: 1367 ExecStartPre=/bin/dash -c systemctl set-environment ACTIVE_IP=$(mawk NR=4 /DietPi/dietpi/.network) (code=exited, status=0/SUCCESS) Loaded: loaded (/etc/systemd/system/rvice disabled vendor preset: enabled)Īctive: active (running) since Sun 23:16:33 CET 28s ago DietPi-Services | restart : systemctl status gmrender Here is the service log after starting the service manually : 19 23:05:42 DietPi systemd: Failed to start GMe Ontrol process exited, code=exited, status=1/FAILURE 19 23:05:42 DietPi dash: Failed to set environment: Invalid environme 19 23:05:42 DietPi systemd: Starting GMediaRender (DietPi). Process: 885 ExecStartPre=/bin/dash -c systemctl set-environment ACTIVE_IP=$(mĪwk NR=4 /DietPi/dietpi/.network) (code=exited, status=1/FAILURE) Loaded: loaded (/etc/systemd/system/rvice disabled vendor presetĭrop-In: /etc/systemd/system/Īctive: failed (Result: exit-code) since Sun 23:05:42 C
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