Codec Internship Projects

Repository containing the project submissions for the Codec Internship.

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📁 Repository Structure

codec-internship-projects/
│
├── NLP Chatbot/
│   ├── chatbot.py           # Core chatbot implementation (TF-IDF + Cosine Similarity)
│   ├── intents.json         # Customer service intents dataset (12 intents, 119 patterns)
│   ├── test_audit.py        # Automated validation test script
│   └── README.md            # Detailed documentation for Project 1
│
└── STT Transcription/
    ├── transcriber.py       # Speech-to-text converter with interactive menu and CLI
    ├── test_transcriber.py  # 7-step automated test suite
    ├── requirements.txt     # Python requirements (SpeechRecognition)
    ├── samples/             # Sample audio files (.wav) for testing
    ├── outputs/             # Generated TXT and JSON transcripts
    └── README.md            # Detailed documentation for Project 2

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📌 Projects Included

1. NLP Chatbot (Customer Service)

• Objective: Develop a rule-based or simple NLP-based chatbot for answering basic customer service queries.
• Key Techniques: Text preprocessing, contraction expansion, stopword removal, suffix stemming, custom TF-IDF vectorization, cosine similarity, rule-based order extraction, and session context tracking.
• Dependencies: None (Uses pure Python standard library).
• Run:

  cd "NLP Chatbot"
  python chatbot.py

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2. Speech-to-Text Transcription

• Objective: Create a simple tool that converts audio recordings into text using basic speech recognition libraries.
• Key Techniques: Audio stream handling (.wav, .flac, .aiff), batch folder scanning, formatted TXT & structured JSON export, noise calibration, multi-language support, and optional live microphone transcription.
• Dependencies: SpeechRecognition
• Run:

  cd "STT Transcription"
  python transcriber.py