8. 11. 2024, 20:06
Prosím o pomoc s pyramidálnou záhadou:
https://i.postimg.cc/mrYdCQ69/IMG-20241108-185017.jpg
pyramída má jednu základňu (ak nepočítam kuchynskú dosku...)
PurePi II 5V+3.3V ultracapacitor/LifePO4 battery power supply combo
a tri poschodia
Raspberry 4B + FifoPi Q7II Flagship I2S/DSD/DoP + HdmiPi Pro II
SW je Volumio
teoreticky by teda malo ísť pripojiť DAC (Topping D90SE) cez HDMI kábel do I2S vstupu DACu. Ide to i prakticky, hrá to veľmi pekne, ale má to háčik: DSD súbory to prehráva len ako PCM 384kHz.
podpora Volumio mi odpísala:
After discussing with our tech team, we found that the reason the audio signal is delivered as PCM instead of native DSD is due to a limitation of the Raspberry Pi’s I2S bus, it does not support DSD-native over I2S.
This is not a limitation of Volumio specifically, but rather a hardware constraint of the RPI.
To work around this, I recommend setting Volumio to play DSD in DoP (DSD over PCM) mode, which you can find in the Playback Options menu. I guess this could work.
Alternatively, you might want to reach out to Ian Canada for more details on how their I2S/DSD transport is designed to work. They may have more insights on whether there are additional configurations or hardware options to achieve native DSD playback.
Finally, just as an FYI, the I2S drivers you see in Volumio's audio output menu are related to I2S DACs that can connect directly to the RPI via GPIO.
Že by som bol prvý/jediný, kto sa pokúša prehrať DSD via I2S z RPI do Toppingu???
Alebo sa naozaj mám zmieriť s tým, že mi neostáva nič iné než USB? Cez USB výstup priamo na RPI totiž DSD súbory hrajú správne. Budem vďačný za každú radu...
https://i.postimg.cc/mrYdCQ69/IMG-20241108-185017.jpg
pyramída má jednu základňu (ak nepočítam kuchynskú dosku...)
PurePi II 5V+3.3V ultracapacitor/LifePO4 battery power supply combo
a tri poschodia
Raspberry 4B + FifoPi Q7II Flagship I2S/DSD/DoP + HdmiPi Pro II
SW je Volumio
teoreticky by teda malo ísť pripojiť DAC (Topping D90SE) cez HDMI kábel do I2S vstupu DACu. Ide to i prakticky, hrá to veľmi pekne, ale má to háčik: DSD súbory to prehráva len ako PCM 384kHz.
podpora Volumio mi odpísala:
After discussing with our tech team, we found that the reason the audio signal is delivered as PCM instead of native DSD is due to a limitation of the Raspberry Pi’s I2S bus, it does not support DSD-native over I2S.
This is not a limitation of Volumio specifically, but rather a hardware constraint of the RPI.
To work around this, I recommend setting Volumio to play DSD in DoP (DSD over PCM) mode, which you can find in the Playback Options menu. I guess this could work.
Alternatively, you might want to reach out to Ian Canada for more details on how their I2S/DSD transport is designed to work. They may have more insights on whether there are additional configurations or hardware options to achieve native DSD playback.
Finally, just as an FYI, the I2S drivers you see in Volumio's audio output menu are related to I2S DACs that can connect directly to the RPI via GPIO.
Že by som bol prvý/jediný, kto sa pokúša prehrať DSD via I2S z RPI do Toppingu???
Alebo sa naozaj mám zmieriť s tým, že mi neostáva nič iné než USB? Cez USB výstup priamo na RPI totiž DSD súbory hrajú správne. Budem vďačný za každú radu...
podpoř provoz fóra