# `cogpy.spectral`

Spectral analysis: multitaper PSD, spectrograms, band power, spectral
features, coherence, and whitening. All functions follow the PSD-first
convention — compute the PSD once, then derive features from it.

**Tutorial:** {doc}`/tutorials/spectral-analysis` |
**Design:** {doc}`/explanation/spectral-conventions`

## Submodules

```{eval-rst}
.. autosummary::
   :recursive:

   cogpy.spectral.bivariate
   cogpy.spectral.features
   cogpy.spectral.multitaper
   cogpy.spectral.process_spectrogram
   cogpy.spectral.psd
   cogpy.spectral.psd_utils
   cogpy.spectral.specx
   cogpy.spectral.whitening
```

```{eval-rst}
.. automodule:: cogpy.spectral
   :members:
   :undoc-members:
   :show-inheritance:
   :noindex:
```