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[SOLVED] How Microphones work?

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psurya1994

psurya1994

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After reading about microphones on the net, this doubt struck me.
The diaphragm of the microphone converts the sound energy into a electrical signal. The signal is amplified and that is fed to the loud speaker. Here's my doubt, 'In this process, only the intensity of sound must be recorded, not the tone of the person. But using the microphone, i feel even the tone is recorded. I think different people can have different tones and same intensity. Where am I going wrong?'
 

The sound wave is not simple, but complex, with a lot of harmonics and overtones that shape the sound and add tone and timbre.
The mic amplifies the complex waveform.
 
Hi;
I think that, when you say "instensity of sound" it is ampliyude, when say "tone of sound" it is frequency.
In this case isn't it obvious? Diaphragm vibrates according to sound strength and frequency.
Consider capacitive mics. As diaphragm vibrates capacity of the mic changes, then you can sense and amplify voltage changes on an RC network, this signal is directly proportional to sound.

Hope helps
 
Thanks! Now i understood it!
 

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