# powspec

From tuneR v1.3.3
by Uwe Ligges

##### Powerspectrum

Compute the powerspectrum of the input signal. Basically output a power spectrogram using a Hamming window.

##### Usage

`powspec(x, sr = 8000, wintime = 0.025, steptime = 0.01, dither = FALSE)`

##### Arguments

- x
Vector of samples.

- sr
Sampling rate of the signal.

- wintime
Window length in sec.

- steptime
Step between successive windows in sec.

- dither
Add offset to spectrum as if dither noise.

##### Value

Matrix, where each column represents a power spectrum for a given frame and each row represents a frequency.

##### References

Daniel P. W. Ellis: http://www.ee.columbia.edu/~dpwe/resources/matlab/rastamat/

##### See Also

##### Examples

```
# NOT RUN {
testsound <- normalize(sine(400) + sine(1000) + square(250), "16")
pspectrum <- powspec(testsound@left, testsound@samp.rate)
# }
```

*Documentation reproduced from package tuneR, version 1.3.3, License: GPL-2 | GPL-3*

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