[LAU] Zoom H5 jack_iodelay

[Lorenzo Sutton]

Hi David, all,

Creating a new thread as the old one was pretty long...

On 19/03/2021 15:22, David Kastrup wrote:
[...]

 >> - Zoom H5 shows 4 inputs in jack: the L/R mics and the inputs 1 and 2
 >
 > Oh, can you just put the headphones right next to the mics (makes
 > astonishingly little difference in comparison to direct connections) and
 > use jack_iodelay for measuring out the latency of the H5 with your
 > settings?
 >
 > Numbers are surprisingly hard to come by for any audio interface.
 >

This is what I got by connecting jack_delay to one output and putting 
the headphone right in front of the microphones (connected only one to 
the jack_delay input). These are common jack settings I use or have used 
with this device, although the 32 Frames is very unstable and the 64 
Frames one gets a few xruns depending on what it's used with (but still 
more usable). The 128 Frames settings is very stable.

    SR    Fr/p   Avg. delay reported (ms)
------+-------+-------------------------
48000
	128,2	22.7
	64,3	18.7
	32,3	14.2

44100
	128,2	25.2
	64,3	20.6

96000
	128,2	22.6
	64,3	18.6

88200
	64,3	18.6

Hope this is useful /interesting

Lorenzo.