.. Perun PowerDesk Documentation
   file: dst.rst
   Copyright (c) 2016
   Perun Technologies

.. _dst:

Signal Processing and Analysis
==============================

**Dynamic Systems Toolkit** (**DST**) is a part of ``Perun PowerDesk`` responsible for *live* signal processing and signal analysis in general. Most of the toolkit's functionality can be accessed easily by means of the :ref:`ribbonMenu`. However, it is also possible (and sometimes even easier) to invoke the functionality using the :ref:`projectExplorer`.

.. figure:: _static/images/ribbon_dst.png
  :figwidth: 70%
  :align: center

  ``PowerDesk`` Main Window Ribbon Menu with highlighted group of controls used for accessing **DST**-related functionality.

**Dynamic Systems Toolkit** operates with two types of items: *signals* and *spectra*. *Signals* are quantities that depend on time. They can be measured or generated according to some pre-specified functional specification. *Spectra* are quantities that depend on frequency. A spectrum is always related to some signal, from which it is obtained by means of the *Discrete Fourier Transform* (more precisely by means of the **FFT** algorithm).

Each **DST** item is characterized by a unique *name*. Once an item is created, **PowerDesk** proposes some descriptive, default name to it. For example, if a signal is named ``Signal``, then the corresponding spectrum is named ``Spectrum of 'Signal'``. A similar naming convention is applied for other types of signal transformations.

The following processing and analysis tools are supported within **PowerDesk**:

.. toctree::
   :maxdepth: 1

   dst_customsig
   dst_statsigmap
   dst_binstatsigmap
   dst_filteredsig
   dst_spectra
   ncalc_syntax