Voice Assistant Using Speech Recognition and Text-to-Speech

This project implements a simple voice-controlled personal assistant in Python. The assistant listens to spoken user commands, converts them to text, processes them, and responds using text-to-speech output.

The assistant can greet the user, speak the current time, search Wikipedia for people, and exit on command.

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1. Features

The assistant currently supports the following capabilities:

• Speech recognition using microphone input
• Text-to-speech responses
• Time announcements
• “Who is …” queries using Wikipedia summaries
• Greeting based on time of day
• Exit on voice commands: stop / exit / bye

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2. Technologies Used

Component	Library
Speech recognition	speech_recognition
Text to speech	pyttsx3
Knowledge lookup	wikipedia
Date and time	datetime

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3. Requirements

Install dependencies before running the assistant:

pip install SpeechRecognition
pip install pyttsx3
pip install wikipedia
pip install pyaudio

Note: On some systems, pyaudio must be installed separately (for example via system package manager or wheel file).

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4. How It Works

1. Initializes text-to-speech engine

2. Greets user based on current time

3. Continuously listens to microphone input

4. Recognizes speech using Google Speech API

5. Processes commands such as:

   • “what is the time”
   • “who is Albert Einstein”
   • “what is your name”

6. Speaks responses back to the user

7. Stops when user says:

   • stop
   • exit
   • bye

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5. Running the Program

Run the script:

python main.py

Make sure:

• a working microphone is connected
• internet connection is available (for speech recognition and Wikipedia lookup)

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6. Microphone Configuration

The program uses microphone index:

mic_id = 1

If your microphone index is different, list available microphones:

import speech_recognition as sr
sr.Microphone.list_microphone_names()

Then update mic_id accordingly.