Showing raised cosine and FFT.

Raised cosine is displayed in an interactive JavaFX GUI. The beta
value can be dyanmically adjusted from 0 to 1 and an FFT displays
the spectral impact to the most recent adjustment.
A low-pass filter can replace the raised cosine FIR filter to show
the difference between the two.

build_and_run.md

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+# Build and Run Instructions for Speed Graph Application
+
+This guide explains how to build and run the Speed Graph with Adjustable Raised Cosine Filter application on different platforms: **Arch Linux**, **Ubuntu**, and **Windows**.
+
+## Prerequisites
+
+Before proceeding, ensure you have the following installed:
+- **Java Development Kit (JDK)** 17 or higher
+- **Maven** (for handling dependencies and building the project)
+- **Git** (for cloning the repository)
+
+---
+
+## Arch Linux
+
+### 1. Install Dependencies
+You can install the necessary dependencies using `pacman`:
+```bash
+sudo pacman -S jdk17-openjdk maven git
+```
+
+## 2. Clone the Repository and Build
+```bash
+git clone https://github.com/eric-waveletsolutions/speedgraph.git
+cd speedgraph
+mvn clean install
+```
+
+## 3. Run the Application
+```bash
+mvn javafx:run
+
+```
+
+## Ubuntu
+### 1. Install Dependencies
+
+You can install the required packages using apt:
+
+```bash
+sudo apt update
+sudo apt install openjdk-17-jdk maven git
+```
+
+### 2. Clone the Repository and Build
+```bash
+git clone https://github.com/eric-waveletsolutions/speedgraph.git
+cd speedgraph
+mvn clean install
+```
+
+### 3. Run the Application
+```bash
+mvn javafx:run
+```
+
+## Windows
+### 1. Install Dependencies
+
+1. Install Java 17: Download and install the JDK from the Oracle website or using AdoptOpenJDK.
+
+2. Install Maven: Download Maven from the Apache Maven website, extract it, and set it up in your system's PATH.
+
+3. Install Git: Download and install Git from the Git website.
+
+### 2. Clone the Repository and Build
+
+Open the terminal (or Git Bash) and run:
+```bash
+git clone https://github.com/eric-waveletsolutions/speedgraph.git
+cd speedgraph
+mvn clean install
+```
+
+### 3. Run the Application
+```bash
+mvn javafx:run
+```