## Momentary power

Purpose

Description

Tips

Macro Synopsis

Modules

Related Functions

References

### Purpose

Momentary power

### Description

"Momentary power" belongs to the group of adaptive estimators and
computes the momentary power of the input signal x.
Parameters are:

- Adaptation time
`tm` for the mean estimator and
- Adaptation time
`tv` for the variance estimator.

Both parameters are in x-axis units.

### Tips

The parameters for the adaptation times of the estimators determine the adaptation speed and the robustness of the estimation procedure. Lower values result in higher adaptation speeds but then the estimated quantity varies around the true value with high variance. Higher values result in lower adaptation speeds, but then the quantity to be estimated converges more smoothly to the true value in the case of stationary signals.

### Macro Synopsis

`y = MomPower(x,tm,tv);`

signal x,y;

float tm,tv;

### Modules

Filter

### Related Functions

Momentary ARMA bandpower, Momentary ARMA coherence,
ARMA dependence, Momentary ARMA spectrum,
Momentary bandpower, Momentary frequency,
Momentary mean.

### References

Haykin [41], Grieszbach et al. [43]