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2014/10/16 ¤W¤È 08:12:44
android Programming Glossary: driftFix 3GP file after streaming from Android Media Recorder http://stackoverflow.com/questions/11994470/fix-3gp-file-after-streaming-from-android-media-recorder 20ms packets. In other audio cases you will start seeing drift in long runs especially where you start having scenes of high..
Gyroscope Issues with Device Orientation http://stackoverflow.com/questions/14310347/gyroscope-issues-with-device-orientation applied to the code in the tutorial to eliminate gyro drift . Unfortunately the code only works when my device is placed.. and orientation with fused orientation to comensate gyro drift gyroMatrix getRotationMatrixFromOrientation fusedOrientation..
How to use my own sqlite database? http://stackoverflow.com/questions/2387421/how-to-use-my-own-sqlite-database I've created it's not quite complete but you'll get the drift. public class DbUtils private static final String DB_PATH data..
Detect application heap size in Android http://stackoverflow.com/questions/2630158/detect-application-heap-size-in-android without erroring even when my memory usage is allowed to drift up toward 20MB presumably it could go as high as 24MB although..
How to calculate distance based on phone acceleration http://stackoverflow.com/questions/4329164/how-to-calculate-distance-based-on-phone-acceleration things any amount of tilt no matter how slight will add drift. Meaning that there will always be a small amount of constant.. to periodically surface and sync with GPS to correct this drift. Second the accelerometer measures force not movement. Any kind..
What is the real world accuracy of phone accelerometers when used for positioning? http://stackoverflow.com/questions/6027724/what-is-the-real-world-accuracy-of-phone-accelerometers-when-used-for-positionin of techniques like Kalman filters to correct for drift though if such techniques are relevant to my application and..
MediaPlayer error -2147483648 when playing file on internal storage http://stackoverflow.com/questions/6380765/mediaplayer-error-2147483648-when-playing-file-on-internal-storage audio 06 17 10 07 34.450 INFO MPEG4Writer 85 Audio track drift time 20309 us 06 17 10 07 34.450 DEBUG MPEG4Writer 85 Stopping.. audio 06 17 10 08 34.090 INFO MPEG4Writer 85 Audio track drift time 385311 us 06 17 10 08 34.090 DEBUG MPEG4Writer 85 Stopping..
Fix 3GP file after streaming from Android Media Recorder http://stackoverflow.com/questions/11994470/fix-3gp-file-after-streaming-from-android-media-recorder of video frames and your audio will have to be amr to assume 20ms packets. In other audio cases you will start seeing drift in long runs especially where you start having scenes of high motion . This is because each audio packet generated does..
Gyroscope Issues with Device Orientation http://stackoverflow.com/questions/14310347/gyroscope-issues-with-device-orientation All the readings are extremely accurate there's a filter applied to the code in the tutorial to eliminate gyro drift . Unfortunately the code only works when my device is placed flat on a surface that is parallel to the ground. The most.. 2 oneMinusCoeff accMagOrientation 2 overwrite gyro matrix and orientation with fused orientation to comensate gyro drift gyroMatrix getRotationMatrixFromOrientation fusedOrientation System.arraycopy fusedOrientation 0 gyroOrientation 0 3 update..
How to use my own sqlite database? http://stackoverflow.com/questions/2387421/how-to-use-my-own-sqlite-database Edit Here is a version of this utility class I've created it's not quite complete but you'll get the drift. public class DbUtils private static final String DB_PATH data data com.mypackage.myapp databases private static final String..
Detect application heap size in Android http://stackoverflow.com/questions/2630158/detect-application-heap-size-in-android of 16 if I manually select 24MB as the heap size I can run without erroring even when my memory usage is allowed to drift up toward 20MB presumably it could go as high as 24MB although I haven't tried this . But other similarly large ish apps..
How to calculate distance based on phone acceleration http://stackoverflow.com/questions/4329164/how-to-calculate-distance-based-on-phone-acceleration the starting point just read the distance variable. Several things any amount of tilt no matter how slight will add drift. Meaning that there will always be a small amount of constant acceleration in one direction or the other unless the angle.. and gyros because GPS doesn't work under water need to periodically surface and sync with GPS to correct this drift. Second the accelerometer measures force not movement. Any kind of force is measured. I mentioned gravity but it also measures..
What is the real world accuracy of phone accelerometers when used for positioning? http://stackoverflow.com/questions/6027724/what-is-the-real-world-accuracy-of-phone-accelerometers-when-used-for-positionin smart phones or whatever. I have only a superficial understanding of techniques like Kalman filters to correct for drift though if such techniques are relevant to my application and someone wants to describe the quality of the corrections I..
MediaPlayer error -2147483648 when playing file on internal storage http://stackoverflow.com/questions/6380765/mediaplayer-error-2147483648-when-playing-file-on-internal-storage Received total 0 length 167 0 buffers and encoded 167 frames. audio 06 17 10 07 34.450 INFO MPEG4Writer 85 Audio track drift time 20309 us 06 17 10 07 34.450 DEBUG MPEG4Writer 85 Stopping Audio track source 06 17 10 07 34.470 DEBUG MPEG4Writer 85.. Received total 0 length 257 0 buffers and encoded 257 frames. audio 06 17 10 08 34.090 INFO MPEG4Writer 85 Audio track drift time 385311 us 06 17 10 08 34.090 DEBUG MPEG4Writer 85 Stopping Audio track source 06 17 10 08 34.090 DEBUG MPEG4Writer..
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