Browsing through a technical blog,I came across an interesting piece of info:a pair of earphones can be used as a crude microphone.Naturally,I was tempted to criticise the author;earphones are supposed to be output devices-they're not meant for input! Nevertheless,I went on to give it a try.The author was indeed correct,they can be used as a mic,though far from the true sense of the word.Don't expect the makeshift mic to have the efficiency of that of one in a recording studio.There is not much difference between the circuits of a Microphone and a Headphone , just the headphone is designed to spread voice and an microphone to capture the voice !It works on Magnetic Reversal Property which converts vibrations into electronic signals . I have tried this on yahoo chat and it works .
So if you connect the headphone in the microphone slot of your computer, you could use it as a microphone.
Just speak in the ear buds of the microphone, but please speak a bit loudly to be audible at the other end !
Notice, that it will be likely that only one of the two earphones will be a capable carrier of the your voice, for a number of technical reasons.
To find out if your headset works as a mike and to check which ones of the two earphones is the one to talk into perform a simple test while connected online with a friend through Skype or other voice-enabled application.
Talk into one of the earphones saying "ear one, ear one ...." and do the same in the other one saying something like "ear two, ear teo, ...". Ask now your friend when she could hear you better and in most cases you will find out that the right ear is the on that does the job right.
Far from being a professional microphone replacement, this solution is good enough for any emergency situation in which you suddenly do not have access to a needed microphone, while you have available a spare traditional headset / earphones set.
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