# mbipsd

Compute Inverse Power Spectral Density (PSD) that is used to define an excitation time domain signal from a PSD profile.

Attention: Valid only with Altair Product Integration Extension

## Syntax

[sig,tim] = mbipsd(fre,psd,noisefloor)

## Inputs

`fre`- Frequency data.
`psd`- PSD data.
`noisefloor`- Noise floor value.

## Outputs

`sig`- Signal data.
`tim`- Time data.

## Examples

Example with an output argument and a random PSD.

```
fre = [0:0.1:10];
psd = randn(size(fre));
noise_floor = 1;
[out1,out2] = mbipsd(fre,psd,noise_floor);
```

`Output code`

## Comments

This function realizes a time series based on a PSD input.