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If we feed two different SPL to a microphone,what will be its output


Aaami

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You will get the sum of the two signals (this is what microphones do all the time: picking up signals from multiple sources and producing an output that represents all of them).

There are some practical issues that will affect this "ideal" result. For example, how directional is the microphone (and how do the directions of the two sources relate to that). Also, the linearity of the microphone will affect the result, especially if the input levels are approaching the limit of the mic.

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You can selectively ignore sounds using ai too. For example you can filter out background noise from traffic or other people in a restaurant. You can also separate the lyrics sung by a singer in real-time translated to another language and the background music. You can even focus on specific instruments.

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3 hours ago, Aaami said:

If we feed two signals at 75dB Sound pressure level(SPL) and 120dB SPL into a microphone, what will be its output?Will the microphone takes both the signals or only the high powered signal(120dB SPL)

A lot of variables here. If these are pure tones, there are locations where the amplitude and phase difference will result in having them destructively interfere, so a microphone at that point will record (basically) nothing. (microphones having a spatial extent means that the amplitude will be small but not zero)

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