linuxaudio.org

On Sun, May 13, 2012 at 8:21 AM, Joel Roth  wrote:
> system:capture_1

quoted text
>        port playback latency = [ 0 0 ] frames

>        port capture latency = [ 1024 1024 ] frames

this means, quite simply:
    audio read from system:capture_1 arrived at the edge of the JACK

graph somewhere between 1024 and 1024 frames before it is available
the playback latency is irrelevant here since this is a capture port.

if you had also seen
system:playback_1

	port playback latency = [ 2048 2048 ] frames
then you would know that:
   audio delivered to system:playback_1 will arrive at the edge of the

JACK graph somewhere between 2048 and 2048 frames after writing it
these numbers do not tell you "how does this port contribute to the

latency". the latency numbers in JACK are designed to provide answers

to the two questions shown at the top of:
     http://jackaudio.org/files/jack-latency.png

_______________________________________________

Linux-audio-user mailing list

Linux-audio-user@lists.linuxaudio.org

http://lists.linuxaudio.org/listinfo/linux-audio-user