The DTMF signalling helped to automate the industrial control in an efficient way [ The automation plays the vital role in industrial application. The night vision camera has been controlled by DTMF signal and Global Positioning System (GPS) system. Even during the night time also spy robots are deployed in military applications to monitor [ Mobile and remote controlled automatic agricultural devices utilized the principle of DTMF signal for controlling [ Also, the dual-tone multi-frequency (DTMF) signal is utilized in many applications in recent past [ It is therefore financially prudent to replace analog receivers with their digital equivalents which are found to be far less susceptible to noise as well as more reliable and cost-effective. ], however, thanks to rapid technological advancements in the recent past, wireless networks have been moving towards digitization where all signals are considered equal. Previously, single tone frequency line pulsing was used in telephone equipment [ This is due to various factors such as the circulation of outdated transmitters alongside noise and frequency variations that are extant in analog signals. While telecommunication receivers have gotten exceedingly better with time, there is still a degree of unreliability associated with analog detectors. The full terms of this licence may be seen at Anyone may reproduce, distribute, translate and create derivative works of this article (for both commercial and non-commercial purposes), subject to full attribution to the original publication and authors. This article is published under the Creative Commons Attribution (CC BY 4.0) licence.
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