Have you ever heard of spectrograms?

Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

A spectrogram is a time history of the spectral content of an audio signal.
The intensity of spectral components is color coded.
It can be displayed by your smartphone by downloading a suitable app.
I usually listen to music by two alternative speaker systems in different rooms.
One traditional and one 'near field'.
This is the spectrogram of the near field speakers with jazz (and saxophones).
What is amazing is that you could say the type of music by visual inspection!
Jazz looks different from classical music or from rock/pop.
You can also get a lot of information of your set up by playing pure tones or multitone test signals (such as harmonic distortion and intermodulation).
As a final remark, spectrograms of a 'near field' speaker system looks 'sharper' than with traditional speakers.

Omnes feriunt, ultima necat.

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Topic - Have you ever heard of spectrograms? - cellailuca 11:34:13 05/29/25 (1)

RE: Have you ever heard of spectrograms? - dogscanskate 05:32:18 05/30/25 (0)

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