LinuxMusicians

Hi,
I woulk like to play on speakers the sound from my Mic...
My sound card is home made,it's an USB sound card...

Now, I use something like:
arecord|aplay

but there is a delay between the recorded sound and the playing sound...(500 ms)

I've tried using jackd, but I can't figure out to make it working with my USB card

Does anybody has a idea to do this?

Thank you!

If your card has an Alsa driver (which it must since you can use aplay) then you should be able to connect it to Jack. I would think it would be a matter of selecting the alsa driver and the correct hardware interface to use. aplay -l will list your soundcards, though I'm not sure how this output maps into the list of interfaces generated by QJackCtl, but you could just try them all, though mostly like it is one with a name like "hw..." Another issue with Jack is that you need to make sure no other software is using the soundcard or else Jack won't be able to connect.