ArmaRssiFilter (lib 1.0.20210507.1216 API)

java.lang.Object
- org.altbeacon.beacon.service.ArmaRssiFilter

All Implemented Interfaces:

RssiFilter
```
public class ArmaRssiFilter
extends Object
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

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addMeasurement(Integer rssi)`
`double`	`calculateRssi()`
`int`	`getMeasurementCount()`
`boolean`	`noMeasurementsAvailable()`
`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
```
public ArmaRssiFilter()
```
- Method Detail
  - addMeasurement
```
public void addMeasurement(Integer rssi)
```
    Specified by:
    
    addMeasurement in interface RssiFilter
  - getMeasurementCount
```
public int getMeasurementCount()
```
    Specified by:
    
    getMeasurementCount in interface RssiFilter
  - noMeasurementsAvailable
```
public boolean noMeasurementsAvailable()
```
    Specified by:
    
    noMeasurementsAvailable in interface RssiFilter
  - calculateRssi
```
public double calculateRssi()
```
    Specified by:
    
    calculateRssi in interface RssiFilter
  - setDEFAULT_ARMA_SPEED
```
public static void setDEFAULT_ARMA_SPEED(double default_arma_speed)
```