Abstract:
Receiving or making phone calls in offices- motor vehicles and home sitting rooms around audio devices like FM radio, TV gets. laptops and desktop computers requires muting these devices to ensure good mobile phone. speech communication. In this effort therefore it requires the person making a phone call to switch off any of these audio devices manually.
This project involved the development of an Audio mute system for a mobile phone speech communication that can be integrated with in audio devices to automatically mute audio devices to eliminate audio background noise. The system detects an incoming call signal to control the functioning of an audio system. The designed circuit automatically disconnects power supply to the audio system whenever a call is received or made by the cell phone and notifies the user with the LCD and LED.
Although my project worked as expected. there are some improvements that can be made to make the detector circuit more sensitive. Instead of using a cluster of inductors, we can use less number of inductors to make the circuit more compact and small. The major advantages of my project is that it is less costly than the detector circuits available in the marker today, such as the Motorola Bluetooth detector.
