DSP tasks 2023 ASU

Welcome to the Signal Processing Toolbox repository!
This toolbox provides a comprehensive set of functionalities for signal processing, covering both time domain and frequency domain tools. The toolbox is designed to be user-friendly and customizable for various signal processing tasks.
This is implementation of digital signal processing tasks for 4th year CS students in the Faculty of Computer Science at Ain Shams University. The course aims to provide students with a comprehensive understanding of digital signal processing and its applications in various fields.

Getting Started

To get started with the Signal Processing Toolbox, follow these steps:

Prerequisites

Make sure you have the following prerequisites installed on your system:

Python (version 3.x)
Dependencies: numpy, matplotlib (install using pip install numpy matplotlib)

Installation

Clone the repository to your local machine:

git clone https://github.com/Andrew-A-A/DSP_tasks

Usage

Navigate to the project directory and run the main script:

python main.py

This will launch the Signal Processing Toolbox application, and you will be presented with a menu to choose from different signal processing tasks.

Features

1. Signal Generation

1.1 Continuous and Discrete Signal Display

Read samples of a signal from a txt file and display it in both continuous and discrete representations.

1.2 Sinusoidal or Cosinusoidal Signal Generation

Generate sinusoidal or cosinusoidal signals with user-specified parameters:
- Type (sine or cosine)
- Amplitude (A)
- Phase shift (theta)
- Analog frequency
- Sampling frequency

2. Arithmetic Operations

2.1 Signal Addition, Subtraction, and Multiplication

Add, subtract, and multiply input signals and display the resulting signal.

2.2 Signal Squaring, Shifting, and Normalization

Square a signal and display the resulting signal.
Shift a signal by a positive or negative constant.
Normalize the signal within a user-specified range (-1 to 1 or 0 to 1).

2.3 Accumulation

Accumulate input signals.

3. Quantization

Quantize an input signal based on user-specified levels or number of bits.
Display the quantized signal, quantization error, and encoded signal.

4. Frequency Domain Tools

4.1 Fourier Transform and Frequency Analysis

Apply Fourier transform to any input signal.
Display frequency versus amplitude and frequency versus phase relations.
Prompt the user to enter the sampling frequency in HZ.

4.2 Amplitude and Phase Modification

Allow modification of the amplitude and phase of the signal components.

4.3 Signal Reconstruction using IDFT

Allow signal reconstruction using Inverse Discrete Fourier Transform (IDFT).

4.4 Save and Read Frequency Components

Save frequency components in a txt file in polar form (amplitude and phase).
Read a txt file containing frequency components in polar form and reconstruct the signal using IDFT.

4.5 Discrete Cosine Transform (DCT)

Compute DCT for a given input signal and display the result.
Allow the user to choose the first m coefficients to be saved in a txt file.

4.6 Remove DC Component

Remove the DC component in the time domain.

5. Time Domain Tools

5.1 Smoothing

Compute moving average (y(n)) for signal (x(n)), letting the user enter the number of points included in averaging.

5.2 Sharpening

Compute and display (y(n)) representing:
- First Derivative of the input signal: (Y(n) = x(n) - x(n-1))
- Second Derivative of the input signal: (Y(n) = x(n+1) - 2x(n) + x(n-1))

5.3 Delaying or Advancing

Delay or advance a signal by (k) steps.

5.4 Folding

Fold a signal.

5.5 Delaying or Advancing a Folded Signal

Delay or advance a folded signal.

5.6 Remove the DC Component in Frequency Domain

Remove the DC component in the frequency domain.

6. Convolution and Correlation

6.1 Fast Convolution

Perform fast convolution on two signals.

6.2 Fast Correlation

Perform fast correlation on two signals.

6.3 Cross-Correlation

Compute and display cross-correlation between two signals.

6.4 Direct Convolution

Convolve two signals using the direct method.

Andrew-A-A/DSP_tasks