<div>Hello:</div><div><br></div>I am very much new to Linux and Linux audio. I am trying to measure audio IO latency for my system.<div>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.</div>
<div><br></div><div>I guess there are # of frames per period that may eventually be used to calculate the target latency but <b>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</b>? 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?</div>
<div><br></div><div>Thanks,</div><div>-F</div>