# Smartphone Gyroscope Range (radians / second)

I'm using gyroscope recordings of Android Smartphones. The measurements are in radians / second. I recognized that sometimes there are some outliers and also the range is different between smartphones. Thus, currently I'm clipping at -20 and 20 radians / second for each dimension (x,y,z).

I don't know if 20 radians / second for rotation of a smartphone is much or not. Is this a reasonable value or what clipping values should be used?

• reasonable value for what end use? – jsotola Feb 18 at 20:28
• @jsotola These are gyroscope measurements during usual daily smartphone usage. I'm using these measurements to analyse smartphone usage and predict activity and other variables (e.g. emotions). – machinery Feb 18 at 22:46
• @StainlessSteelRat I don't have a feeling how fast 20 radians/s are, that's why it is difficult to judge if it make sense during daily smartphone usage. What values do you think make sense during daily smartphone usage? My first goal is to remove outliers (e.g. sensor failures). – machinery Feb 18 at 22:48
• @StainlessSteelRat According to the Android documentation Sensor.TYPE_GYROSCOPE is "All values are in radians/second and measure the rate of rotation around the device's local X, Y and Z axis." Please see developer.android.com/reference/android/hardware/…: – machinery Feb 18 at 23:16
• So 20 radians/s means 3.18 rotations of your phone in 1 second. So 20 radians/s makes absolutely no sense relative to a phone! So your question cannot be answered as formed because 2π radians = 6.283185 radians = 360°. That is basic math. My last comment on this. How many radians in 360°? – StainlessSteelRat Feb 18 at 23:42