[LAU] Zoom H5 jack_iodelay

[David Kastrup]

Lorenzo Sutton <lorenzofsutton at gmail.com> writes:

> 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

Ok, that's not really brilliant.  When latency is already a problem,
this would end up contributing to it more than most soundcards.

-- 
David Kastrup