Spectrogram

What does this spectrogram mean?This is spectrogram of a multitone FM signal

What does this spectrogram mean?This is spectrogram of a multitone FM signal
  1. What does the spectrogram tell you?
  2. What is spectrogram and how do we estimate it?
  3. What is spectrogram of audio?

What does the spectrogram tell you?

A spectrogram is a visual way of representing the signal strength, or “loudness”, of a signal over time at various frequencies present in a particular waveform. Not only can one see whether there is more or less energy at, for example, 2 Hz vs 10 Hz, but one can also see how energy levels vary over time.

What is spectrogram and how do we estimate it?

The spectrogram of a nonstationary signal is an estimate of the time evolution of its frequency content. To construct the spectrogram of a nonstationary signal, Signal Analyzer follows these steps: Divide the signal into equal-length segments.

What is spectrogram of audio?

A spectrogram is a detailed view of audio, able to represent time, frequency, and amplitude all on one graph. A spectrogram can visually reveal broadband, electrical, or intermittent noise in audio, and can allow you to easily isolate those audio problems by sight.

Is there an analogue to the 2D DFT that is rotation equivariant?
Is Fourier transform a rotation?What is 2D DFT in digital image processing?Why is DFT mirrored?Is DFT shift invariant? Is Fourier transform a rotati...
Other end of Nyquist limit
What happens to the signal if it is sampled below Nyquist limit?What value is the Nyquist limit?What happens above Nyquist frequency?Why the Nyquist ...
How power spectral density for a block of modulated symbols is related to that of one symbol?
What does power spectral density tell us?What is PSD and what is its relationship with autocorrelation?How is power spectral density calculated?What ...