3 Aug
2010
3 Aug
'10
4:23 p.m.
Yes of course ! physical input/output should be patched. Thanks. How could
I've missed that !
Just to make sure : when you say that the following sentence is wrong :
"#3 : patch connections in jack : input -> jdelay, jdelay -> output, you should
get a tone in your speakers"
you were refering to the tone part, right ? you mean that physical
connections should ALSO be made, i guess. Because if there are no
connections in jack such as I discribed signal won't get in or out, and thus
Jdelay won't be able to calculate latency.
2010/8/3 Paul Davis <paul(a)linuxaudiosystems.com>
On Tue, Aug 3, 2010 at 7:02 AM, Jean-Yves Poilleux
<jypllx(a)gmail.com>
wrote:
Hi
Actually, there is some info that can be found here and there on some
forums
(see below)
JDelay is, from what I've understood, a command-line tool that allows you
to
determine your sound card latency.
#1 : start jack
#2 : type jdelay in a terminal
#3 : patch connections in jack : input -> jdelay, jdelay -> output, you
should get a tone in your speakers
this is totally and utterly wrong. you have to patch the PHYSICAL
output connector of your soundcard to the PHYSICAL input of your
soundcard.
#4 : latency is calculated, using phase
difference between input and
output
#5 : in the terminal, the latency is printed in
msec.
It never worked on my soundcard, "signal below threshold"
yes, because jdelay is sending a signal out of the soundcard expecting
it to come back, but you have not connected it so that it can.