Which of the following statement is not correct? a) Noise is an analog signal b) Variation of resistance in Light Dependent Resistor is an analog signal c) Human voice is a digital signal d) Room temperature measured during a particular period is an analog signal
Question
Which of the following statement is not correct? a) Noise is an analog signal b) Variation of resistance in Light Dependent Resistor is an analog signal c) Human voice is a digital signal d) Room temperature measured during a particular period is an analog signal
Solution
The statement that is not correct is c) Human voice is a digital signal.
Human voice is an analog signal because it is a continuous signal that changes over time. Digital signals, on the other hand, are discrete and non-continuous. They are represented by binary numbers. So, human voice, before it is converted or processed by any digital device, is naturally an analog signal.
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