The main digital filter for all DACs except for TDA154X is finished and has been throughly tested by several users. TDA154X version needs some polishing, but I didn't have much time to actually finish it, so it's not available at the moment. I hope to get back to it soon enough since I will have more time now.
If you wish to purchase it you can drop me a message.
If you wish to purchase it you can drop me a message.
Hey
I'm sorry for the delay, but I wasn't available on forum due to some other work. Anyway, I took the liberty of answering your private message 😉
I'm sorry for the delay, but I wasn't available on forum due to some other work. Anyway, I took the liberty of answering your private message 😉
I'm not sure I understand everything there, but such interpolator in "HAT" format (for raspberry and some others) would be very desirable !
(but then needs a driver)
(but then needs a driver)
3lite
Сan you make 32x mode with pipelined data loading ( 1\2 time load) into the DAC? So that you can use 4 chips PCM58 and get a sampling frequency of 1536 kHz.
Сan you make 32x mode with pipelined data loading ( 1\2 time load) into the DAC? So that you can use 4 chips PCM58 and get a sampling frequency of 1536 kHz.
Some of us listen to sine waves. Some like drums with impulses, etc. I am curious what impulse-less music you listen too? Who knew?!
Would there be any way to compare this board with an AK4137EQ configured for the same type of operation?
Unlikely. The 16 x filter raises the incoming sample rate by 16. The AK4137 converts the incoming sample rate to a specific outgoing sample rate.
I apologize, I meant more just for general 384/768 (352.8/705.6) operation and was looking for a possible comparison of the quality of the digital filter.
The signal coming out of a drum doesn't look like a Dirac impulse at all and any digital recording of it has already been low-pass filtered to prevent aliasing.
I’m lazy and don’t want to read all 10+ pages, so simple question, is this interpolation filter available for purchase? I’m cleaning up the lab and found some TDA1541A and AD1862 just begging to be used and I just can’t help myself but give in to the desire to tinker with some old tech!
Hey, yes, it is - the information along with price is available within the first post. Drop me a message if you want one, but currently I'm a bit busy, so it might take some time to assemble. That being said, keep in mind that I have created two different digital filters (a special version for TDA1540/TDA1541 only and the other one more generic for other DACs).
Fantastic work! I am in for a filter board with AD1862 PCB (already dropped a PM).
May I suggest to add a possibility to read out status information, for example to be able to show bit/fs of the input on a display and/or wire the on board LEDs to the front panel...?
May I suggest to add a possibility to read out status information, for example to be able to show bit/fs of the input on a display and/or wire the on board LEDs to the front panel...?