Add README and screenshots

README.md

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+# Tape Recorder Pro
+
+**Tape Recorder Pro** is an advanced PyQt6-based audio application designed to simulate and calibrate analog tape machine recording and playback. Built with a powerful DSP backend using `numpy` and `scipy`, it provides auto-calibrating EQ capabilities, tape saturation emulation, and real-time audio playback and recording.
+
+## Features
+
+- **Auto-Calibrating EQ**: Automatically analyze and calibrate your audio signals to match specific frequency responses.
+- **Tape Simulation**: Accurate emulation of tape saturation and safety filters (High-pass/Low-pass) for various tape types, including Type I (Ferric).
+- **Comprehensive UI**: A multi-tab interface for device selection, calibration, EQ visualization, and media playback.
+- **Real-time Processing**: Built on `sounddevice` for low-latency, real-time audio routing and processing.
+
+## Screenshots
+
+Here's a look at the application's interface:
+
+| Devices Setup | Calibration |
+|:---:|:---:|
+| ![Devices Setup](assets/screenshot1.png) | ![Calibration](assets/screenshot2.png) |
+| **EQ Controls** | **Player Panel** |
+| ![EQ Controls](assets/screenshot3.png) | ![Player Panel](assets/screenshot4.png) |
+
+## Installation
+
+1. Ensure you have Python 3.8+ installed.
+2. Install the required dependencies:
+   ```bash
+   pip install -r requirements.txt
+   ```
+
+## Usage
+
+To launch the application, run the `main.py` script from the project root:
+
+```bash
+python main.py
+```
+
+### Application Tabs:
+- **🔊 Devices**: Select your input and output audio devices.
+- **📐 Calibrate**: Run the auto-calibration sequence to generate accurate EQ bands.
+- **🎚️ EQ**: View and manually adjust the active EQ bands and saturation levels.
+- **▶️ Player**: Play back audio files and apply the tape processor in real-time.
+
+## Dependencies
+- `sounddevice`
+- `numpy` & `scipy`
+- `soundfile` & `pydub`
+- `PyQt6` & `pyqtgraph`