I am sorry to disappoint, but i have not performed any measurements as of yet.
and now that i think about it, 5 ms accuracy isn't anything to write home about... back to the drawing board, i guess :( On Monday, April 6, 2015 at 6:49:01 PM UTC+3, Glenn Kasten wrote: > > Very creative suggestion! It sounds like you have already done this test; > would you be willing to share some graphical data showing the relationship > between the two pulses? > (e.g. a graph with time on X axis, and both accelerometer data and audio > data on Y axis in different colors) > > On Friday, April 3, 2015 at 4:47:40 PM UTC-7, George Tsiros wrote: >> >> use the accelerometer. as far as i can tell, the accelerometer sensor >> data is not buffered thus latency is minimal >> >> rest device on something soft (i used cigarette rolling filters) >> >> set accelerometer to maximum refresh rate, on my xperia z ultra it is 200 >> Hz >> >> output pulses (say 1% duty cycle at 1 Hz) at maximum possible amplitude >> >> measure difference in time between request for sound playback and >> movement detected via the accelerometer >> >> some tweaking will be necessary to filter out the noise from the signal >> > -- -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
