{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "
" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "\n", "\n", "\n", "Following Section 1.3.1 of [Müller, FMP, Springer 2015], we introdue in this notebook the concept of waveforms and their visualization.\n", "
" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Pressure–Time Plot\n", "\n", "A **sound** is generated by a vibrating object such as the vocal cords of a singer, the string and soundboard of a violin, the diaphragm of a kettledrum, or the prongs of a tuning fork. These vibrations cause displacements and oscillations of air molecules, resulting in local regions of compression and rarefaction. The alternating pressure travels through the air as a **wave**, from its source to a listener or a microphone. At its destination, it\n", "can then be perceived as sound by the human or converted into an electrical signal by a microphone. Graphically, the change in air pressure at a certain location can be represented by a **pressure–time plot**, also referred to as the **waveform** of the sound. The waveform shows the deviation of the air pressure from the average air pressure. \n", "\n", "![]() | \n",
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