Voice-Controlled Music Player Using HMM in C++

This project is a C++ console application that simulates a voice-controlled music player. The user can navigate and play music tracks organized in playlists using a Hidden Markov Model (HMM)-based voice recognition system. The application uses the Windows Multimedia API for audio input, performs basic HMM-based speech processing, and allows users to select playlists and songs based on spoken commands.

Features

• Voice-controlled selection of playlists and songs
• Directory-based organization of playlists and tracks
• Basic Hidden Markov Model (HMM) implementation for speech digit recognition
• Integration with Windows Media Player for playback

Project Structure

• src\: Directory for Main source file.
• src\src.cpp: Main source file containing the console application code and for handling HMM model generation and loading.
• music\: Directory structure for playlists and songs. Ensure music is in the same directory as src folder.
• data\: Directory structure for saved recordings. Ensure data is in the same directory as src folder.

Requirements - Refer requirement.txt file.

Setup Instructions

1. Extract the Zip Folder

2. Open terminal in SPEECH folder

3. Compile the Program

   • Using Visual Studio:
     • Open the project in Visual Studio and build the solution.
   • Using GCC with MinGW:

     g++ src.cpp -o music_player.exe -lwinmm
     

4. Run the Program

   ./music_player.exe
   

Usage Instructions

1. Start the program. You will be prompted to either train the model or test it.

   • Training will initialize the HMM model with existing .txt data files.
   • Testing will prompt you to navigate playlists and songs using voice commands directly.

2. Playlist and Song Selection

   • The application will display available playlists. Press Enter to start recording.
   • The system records a short audio sample to interpret your voice command using the HMM model.
   • After a playlist is selected, the program will list songs within that playlist. Use voice commands again to select a song.

3. Playback Control

   • Songs will be played through Windows Media Player.
   • After playback, you can choose to continue or exit the program.

Troubleshooting

• Audio Recording Issues: Ensure that your microphone is set up correctly in Windows settings.
• File Not Found Errors: Verify the directory structure and that all paths are correctly set relative to src.cpp.
• Compilation Errors: Make sure all required libraries are installed, and that winmm.lib is linked correctly.

Additional Information

This project is designed as a single-file C++ program, but due to its complexity, separating HMM model handling into another file (hmm_model.cpp) may improve readability and modularity.

Contributors

• Project Author: Rohan Dayal
• Roll No - 244101039