These use various wavelengths,frequency of band width in which the cable lines and transmission wires, wave medias are propaganded.
The telecommunication is encouraged in an enormous fashion when the 1st launch of the telephone from the telegraph industry came into existence.This helped in feeling people close when voices are heard during exchange of information.
Slowly after telephone cardless phone with hand carrying facility came and then cell phones,head phones and many more with pioneers like nokia,samsung,lg operating as the
large manufacturers of these in international markets by releasing every single added advantage facility to have an edge with their thick and everlasting big competitors to make business interesting and yet attractive every day.
Earlier in medical field for cardiology,angiograms and ecg used frequency in physics. Now we can use telecommunication for ENT research like this. When people speak or converse with one another or many in telephones,first the clarity must be noted by doctors excluding external disturbances always,to identify the condition of patients if they are very sick or have any disease,then with the voice communication and speech analysis notations ranging from digital signals the diagrams can be plotted using wave guides or some thing in physics ,hence the patients condition and voice status can be found.
This is useful for musicians to maintain their throat ,then for teachers and professors in the education field.
Thus i dedicate this message to serve the society which comprises of doctors, teachers and professors who can work in coordination with each other.
Am sure the UNICEF,WHO, UNESCO, UNIDO will understand this for the welfare of the society to take care of every individuals voice that is precious .
The author can be contacted at sowmya_ramani@yahoo.com