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latency with touchscreens - do you feel it when using fader/knobs etc.?

For iOS (iPhone, iPad & iPod), Android, Windows Phone, etc. App and Hardware talk

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KVRist
 
97 posts since 4 Apr, 2006

Postby J.C.R.; Tue Feb 19, 2013 8:14 am latency with touchscreens - do you feel it when using fader/knobs etc.?

Hey,

Afaik all present touch devices have a relatively high latency from the touch screen self. It need a certain amount of ms that the action is registered. I've read about 80-100ms. I wonder with all these controller apps (lemur, touchOSC)..


1.) Do you perceive a lag when riding faders or turning knobs compared to physical, traditional midi controllers?

2.) And how about playing rhythmically on the touch screen (on fake MPC like iMaschine)?

3.) Is this a reason for people to use normal midi controllers on an iPad (like th mpk mini) with a connection kit to get a better playable latency?

I'm really interested how you fell about that or what your experience is.
KVRian
 
1086 posts since 12 Mar, 2005

Postby polaris20; Tue Feb 19, 2013 9:15 am

J.C.R. wrote:Hey,

Afaik all present touch devices have a relatively high latency from the touch screen self. It need a certain amount of ms that the action is registered. I've read about 80-100ms. I wonder with all these controller apps (lemur, touchOSC)..


1.) Do you perceive a lag when riding faders or turning knobs compared to physical, traditional midi controllers?

2.) And how about playing rhythmically on the touch screen (on fake MPC like iMaschine)?

3.) Is this a reason for people to use normal midi controllers on an iPad (like th mpk mini) with a connection kit to get a better playable latency?

I'm really interested how you fell about that or what your experience is.


I don't notice any lag at all on the iPad 2 and 3. Feels fine to me.
KVRian
 
1281 posts since 17 Jul, 2003

Postby mbncp; Tue Feb 19, 2013 9:29 am

Don't know the touchscreen lag but I don't think it's that high.
If I set sunriser to 128 samples (3msec) I can play really fast lines, but at 2048(48 msec) it'salmost impossible to play, at least never that fast. If the initial lag was over 80 msec I don't think the difference would be that big.
IMO the latency is under 20 msec.
With finger sliding it may be different as it's probably different detecting a click and tracking some movement.
KVRist
 
429 posts since 27 Oct, 2011, from Pacific Northwest

Postby iPlogger; Tue Feb 19, 2013 10:28 am

I've not noticed latency issues. I fiddle around with pianos/e-pianos (sounds with a quick attack) while playing a pattern and I'm able to play just fine. Also able to input drum patterns to a metronome and don't really notice lag.

I do use a MIDI controller, but also enjoy thinking of ideas and playing around on just the iPad itself when I don't want to hook it up or don't have my controller with me.
KVRian
 
714 posts since 16 Feb, 2005, from tittyland

Postby stash98; Tue Feb 19, 2013 1:55 pm

80-100ms?

UHHHH...NO.

Sorry, if that was the case. I would not use my ipad.
KVRAF
 
3701 posts since 27 Nov, 2003, from beach side australia
 

Postby shanecgriffo; Tue Feb 19, 2013 4:38 pm

I have used a couple badly designed apps that had pretty bad latency but deleted them and can't remember them.. Cheap gimmicky ones that had maybe 100ms latency
Otherwise it's all pretty usable

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