# instfreq

Estimate instantaneous frequency

## Syntax

## Description

specifies additional options for any of the previous syntaxes using name-value
pair arguments. You can specify the algorithm used to estimate the instantaneous
frequency or the frequency limits used in the computation.`ifq`

= instfreq(___,`Name,Value`

)

`instfreq(___)`

with no output arguments plots
the estimated instantaneous frequency.

## Examples

## Input Arguments

## Output Arguments

## More About

## References

[1] Boashash, Boualem. “Estimating
and Interpreting the Instantaneous Frequency of a Signal. I. Fundamentals.”
*Proceedings of the IEEE ^{®}* 80, no. 4 (April 1992): 520–538.
https://doi.org/10.1109/5.135376.

[2] Boashash, Boualem. "Estimating
and Interpreting The Instantaneous Frequency of a Signal. II. Algorithms and
Applications." *Proceedings of the IEEE* 80, no. 4 (May 1992): 540–568.
https://doi.org/10.1109/5.135378.

## Extended Capabilities

## See Also

`hilbert`

| `instbw`

| `pspectrum`

| `tfmoment`

(Predictive Maintenance Toolbox) | `tfsmoment`

(Predictive Maintenance Toolbox) | `tftmoment`

(Predictive Maintenance Toolbox)

**Introduced in R2018a**