64 lines
2.8 KiB
Markdown
64 lines
2.8 KiB
Markdown
# FilterView with Adjustable Raised Cosine Filter
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This JavaFX application demonstrates the concept of a raised cosine filter applied to signal data, visualized in a dynamic graph. The user can control two key parameters:
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## Key Features
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### 1. Speed (Vertical Slider)
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- Controlled via a vertical slider.
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- This parameter determines the value of the signal (represented as speed) at each time step.
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- The slider's range is from -100 to 100.
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### 2. Beta (Roll-off Factor - Horizontal Slider)
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- Controlled via a horizontal slider.
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- Adjusts the roll-off factor (β) of the raised cosine filter.
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- A higher beta value produces smoother transitions in the signal.
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- The range is from 0 (sharp transitions) to 1 (smooth transitions).
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## Graph Display
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The graph displays two series:
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- **Original Speed**: Represents the unfiltered signal, directly derived from the speed slider.
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- **Filtered Speed (Raised Cosine)**: Represents the signal after it has been processed by a raised cosine filter, smoothing transitions based on the roll-off factor (beta).
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### Dynamic Graph
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- The graph updates in real-time, continuously adding new points.
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- It provides a sliding window effect, always showing the latest data over a fixed time window.
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### Pre-populated Graph
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- The graph is filled with zeros at startup, ensuring smoother transitions immediately.
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### Adjustable Raised Cosine Filter
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- The filtered speed is processed using a raised cosine filter.
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- The filter is adjustable via the beta slider to simulate smooth signal transitions.
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### Signal Smoothing with FIR Filtering
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- The raised cosine filter is implemented as a finite impulse response (FIR) filter.
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- The coefficients (taps) of the filter are dynamically generated and applied to the input signal for smoothing.
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### Live Beta Value Display
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- The current beta value is displayed dynamically as the slider is adjusted.
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- This helps the user visualize the filter’s effect in real-time.
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## Technologies Used
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- **JavaFX**: For the graphical user interface, including sliders and real-time graph.
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- **JFreeChart**: For rendering the dynamic line chart visualizing signal data.
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## Purpose
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This application simulates how a raised cosine filter can smooth transitions in a signal, with user-controllable parameters. It's particularly relevant for digital communication systems, where pulse shaping is critical for minimizing bandwidth and reducing inter-symbol interference (ISI).
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---
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## Build and Run Instructions
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For detailed instructions on how to build and run this project on **Arch Linux**, **Ubuntu**, and **Windows**, refer to the [build_and_run.md](./build_and_run.md) file.
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---
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### What's Changed
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- Added a reference to the `build_and_run.md` file for easy access.
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- Cleaned up descriptions to improve readability and consistency.
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