On 07/31/2010 11:23 PM, Arvind Venkatasubramanian wrote: > Hello: > > I am very much new to Linux and Linux audio. I am trying to measure > audio IO latency for my system. > Jdelay seems to be the right tool but when I run it on the terminal, I > am getting message "Signal below threshold..." which probably might be > because Jack is trying to capture audio and ends up getting the low > noise floor because I do not have meaningful signal source connected. > But then I tried to patch the this App to the qJACKctl app but the > settings console is not straight forward to interpret. as it involved > many parameters. > > I guess there are # of frames per period that may eventually be used > to calculate the target latency but *is there a step-by step document > description for Jdelay and any other JACK tools and also using JACK > audio server in an effective manner*? Also, qJACKctl console does not > offer options for very low sampling rates like 8 KHz. With ALSA, this > should be possible but may be this particular tool does not support it. > Can anyone help here? >
re. qjackctl settings you can actually write whatever sample-rate you want. you're not limited to the options given in the drop-down list. however, that doesn't mean that the soundcard will stick to it, ever :) cheers -- rncbc aka Rui Nuno Capela [email protected] _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
