Sound spectrograms of vibrations caused by friction closely resemble the spectrogram of the Slow Down. Creating a spectrogram using the FFT is a digital process. More precise measurements can be obtained through acoustic analysis of a spectrogram or spectral slice. One common technique is creating a time-frequency graph called spectrogram. A spectrogram is a graphic representation of frequencies against time. Display and information types include frequency spectrum, stereo field, surround field, spectrogram, and more. The new features include a reworked GUI, HD spectrogram, Heal Action and Frequency Repair tool. Quadratic algorithms include the Gabor spectrogram, Cohen's class and the adaptive spectrogram. This visual display is referred to as an acoustic spectrogram. The spectrogram translated sounds into readable patterns via a photographic process. This program allows the user to insert a digital image as the spectrogram. MetaSynth will then convert the spectrogram to digital sound and "play" the picture. Any piece of audio can be translated to a spectrogram. Voiceprint can refer to the spectrogram of a voice. This is often called a "hockey stick" call from its appearance on a spectrogram.