Oh I already have a Github repo and several others including one with 5K stars, I just don't feel this one is presentable enough yet (but will be soon!)
Does TOSLINK count? Because that would likely be what's available#team aes/ebu in/out
#useable DAC on board
I'm not sure, so let's calculate it manually for the PCM5102. We have the 1st harmonic at -120dB but since the fundamental is -16dB, it's really at -104dB. Then, we have the second harmonic at -102dB. The coefficients of distortion for those are 10^(-104/20) = 0.00000631 and 10^(-102/20) = 0.00000794 respectively, and added together they're 0.00001425. That equals 20log(0.00001425) = -97dB THD. However, our distortion is not just the 1st and 2nd harmonics, so let's subtract 4dB as an approximation. That would give us about 93 SINAD, which happens to be exactly what the PCM5102 datasheet says is typical!
Only 88 SINAD, how is it that much worse?
I can't actually order them anywhere so that's not an option. However, you CAN get the PCM1794 which offers much better performance than even the TAD5242, but it requires some extra supporting characters (opamps) to use. I have a couple of them plus the opamps so I'll have to try those out sometime.
TI sells directly, not to where you are? to my country 13 euros shipping that is very reasonable if you factor in the huge price difference with digikey and mouser in many items.
If it was me, for low cost and features, ES9080Q: no opamps, 8 channels (what i think is important for a DSP project) and 4 channels spdif output for ca. 8 euros. Now, good luck getting support from ESS as a DIYer.
$200
FWIW, I would prefer AES/EBU in and out.
Every DSP effect program will convert to RISC-V assembly, and then the assembler will convert that to machine code. Making this conversion fast lets us hedge against situations where there aren't many resources available or if there is a huge amount of code to process. For example, one such situation could be if you imported a set of effects with a huge amount of code while there's already other effects running. Another would be if you changed an effect while the CPU load is almost at 100%. Yet another is if you wanted to use this assembler elsewhere because it's good not just for this project but also as a replacement for the typical ones from GCC/LLVM.
