In effect, a spectrogram is built up from a multitude of power spectra of short, overlapping time segments of the signal.
The modulation-filtered spectrogram is a robust speech representation for automatic speech recognition.
Before we can get to work on what the speech means we must work out from the frequency spectrogram what words are being spoken.
Suppose now the solar spectrogram to be viewed in the focus of Or, and the converging rays to be reflected by the prisms Pr and P, i till an image is formed in the focus of the eyepiece at the point where the axis of the eyepiece intersects From Zeitschr.
Hartmann overcame these and many other difficulties by directly superposing the image of the spectrogram of a star, having iron comparison lines, upon the image of a spectrogram of the sun taken also with iron comparison lines.