ArmaRssiFilter 2.19 API

All Implemented Interfaces:

org.altbeacon.beacon.service.RssiFilter
```
public class ArmaRssiFilter
 implements RssiFilter
                    
```
This filter calculates its rssi on base of an auto regressive moving average (ARMA) It needs only the current value to do this; the general formula is n(t) = n(t-1) - c * (n(t-1) - n(t)) where c is a coefficient, that denotes the smoothness - the lower the value, the smoother the average Note: a smoother average needs longer to "settle down" Note: For signals, that change rather frequently (say, 1Hz or faster) and tend to vary more a recommended value would be 0,1 (that means the actual value is changed by 10% of the difference between the actual measurement and the actual average) For signals at lower rates (10Hz) a value of 0.25 to 0.5 would be appropriate

Constructor Summary

Constructors
Constructor	Description
`ArmaRssiFilter()`

Method Summary

Modifier and Type	Method	Description
`void`	`addMeasurement(Integer rssi)`
`int`	`getMeasurementCount()`
`boolean`	`noMeasurementsAvailable()`
`double`	`calculateRssi()`
`static void`	`setDEFAULT_ARMA_SPEED(double default_arma_speed)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- ArmaRssiFilter
```
ArmaRssiFilter()
```

Method Detail

addMeasurement
```
 void addMeasurement(Integer rssi)
```

getMeasurementCount
```
 int getMeasurementCount()
```

noMeasurementsAvailable
```
 boolean noMeasurementsAvailable()
```

calculateRssi
```
 double calculateRssi()
```

setDEFAULT_ARMA_SPEED

 static void setDEFAULT_ARMA_SPEED(double default_arma_speed)