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What is a spectrogram? What variables are on the x- and y-axes?

User Mikesigs
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Definition
"Spectrogram is a visual representation of the strength or loudness of a signal over time a various frequencies in a particuar waveform".

Step-by-step explanation
spectrograms are used to display frequencies of sound waves produced by humans, machinery, animals, whales, jets, etc., as recorded by microphones. Time variable is plotted on x-axis and frequency is plotted on -axis.

User Taylor Vance
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