(02-Nov-2020, 11:23 AM)davem Wrote: I will update this thread if there are any advancements.Look for an IR Blaster with serial port input (You can probably use a USB to serial port dongle if your PC don't have serial port)... This works real well IME (but this is well over 10 years ago so YMMV).
Using the audio card is only going to be as good as the audio card itself, so you might consider getting a better quality one (or up the sample rate).. But these are just band aids to a problem, serial IR works best.
Edit: Serial will also require a new kernel as I'm pretty sure I disable COM ports. Let me know if you are going to use this and I'll hit you with a new kernel with serio support.