Depends on what's being plotted. If it's the electrical signal out of a microphone or into speakers, I guess you could say it's volts. Some sound meters measure in decibels. You have to know what's being plotted.
what is the unit of amplitude when 'cry signal' is represented in time domain?
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when cry signal(audio signal)is represented in time domain, what is the unit of amplitude(y-axis)? At many places i found diagrams showing amplitude on y-axis but unit is not mentioned. is it in dB? if yes what is the conversion of it?
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