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Can you get "audiophile" sound using a native RP4 USB port into a DAC?
#36
You can repeat the same game with PCM (pulse coding mechanism) instead of Pulse density (used in the DSD format) and come to the same results.

But lets assume the absurde idea of an intelligent USB cable is real, and this cable (or a power supply) can change the data stream of the encoded sound in a way so it "gets better bass", without the need of first translating the data into the wave format, then doing a fourier transformation to be able to modify a specific frequency (range), run reverse fourier transformation to get the wave format and then do the encoding again (this is what a DSP does)....

the whole thing will fail as soon as you change the encoding mechanisms. If you switch from PCM to DSD or just change PCM 44kHz 16bit (CD format) to PCM 768 kHz 32bit or any other quality, the whole data format is different. Your USB cable doesn't know this and will produce chaos in such a case, because it will change the wrong bits now.


So if you can't write a program. Exchange the cable, or PSU, or whatever. Play a song with one encoding, check the output. Change the data quality of the output (can be done in Windows in the driver settings), play the same song. If you still can hear it, it's the 100% prove your USB cable didn't reprogram the sound, or your PSU.

Sorry if you wasted money on snake oil.


Messages In This Thread
RE: Can you get "audiophile" sound using a native RP4 USB port into a DAC? - by lolli8 - 05-03-2021, 04:35 PM

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