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In signal processing, amplitudes represent the strength or magnitude of signal components at specific frequencies or time points. The interpretation depends on whether you're working in time domain (instantaneous signal strength) or frequency domain (spectral magnitude), but there's more nuance to consider...
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How to approach this question
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Step 1: Identify whether the context is time domain or frequency domain analysis
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Step 2: Determine if amplitudes are peak, RMS, or complex magnitude values
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Step 3: Relate amplitude values to physical signal characteristics and units