1Electronics & Telecommunication Department, Late GN Sapkal College of Engineering, Nasik, India
2Guide, Electronics & Telecommunication Department, Late GN Sapkal College of Engineering, Nasik, India
Online published on 8 November, 2017.
Now a days, in the call center there is automatic playback of the voice data. For the playback of this DTMF decoding principle is used. In this project we are using same DTMF decoding principle. DTMF (Dual Tone Multi Frequency) is used in telephone key matrix. Each key has particular frequency which is the combination of the lower band frequency and upper band frequency. So that, we can detect any key press. In call center they are playing voice data or switching call. In this project, we are going to give command to the machinery through cell phone. But the principle is same. We have undergone a detailed study about the DTMF application and implementation. As a part of our third year curricular activity we are making the project whose title is “Industrial Automation Using Cellphone”. We have used 8051 Microcontroller as a main component of the project. Now a Microcontroller has become a main component of many of the electronic circuits.
DTMF, IVR, Decoder
