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websocket_server/README.md

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+# WebSocket Audio Server
+
+This is a FastAPI server that receives audio from an ESP32 via WebSocket, saves it, processes it (converts 32-bit to 16-bit), and sends it back for playback.
+
+## Installation
+
+1. Install dependencies:
+   ```bash
+   pip install -r requirements.txt
+   ```
+
+## Usage
+
+1. Start the server:
+   ```bash
+   python server.py
+   ```
+   Or:
+   ```bash
+   uvicorn server:app --host 0.0.0.0 --port 8000
+   ```
+
+2. Update the IP address in `main.py` on your ESP32 to match your computer's IP address.
+   Look for `SERVER_IP` variable.
+
+## Features
+
+- Receives raw audio stream from ESP32.
+- Saves raw audio to `received_audio.raw`.
+- Converts 32-bit audio (from ICS-43434) to 16-bit audio (for MAX98357A).
+- Streams processed audio back to ESP32 for playback.