Graphic equalizer is a multi-range corrector of the amplitude-frequency characteristics of electric sound signals. The boundaries of the full range of frequencies in which the amplitude-frequency characteristic is corrected are determined by the range of frequencies perceived by the human ear. The lower limit of this range is sound vibrations with a frequency of 20 Hz. (oscillations per second), and the upper – 20 KHz. (thousand oscillations per second).
The graphic equalizer, depending on its accuracy, determined by the width of one band, may contain a different number of ranges in which the values of the amplitude-frequency characteristics are set. For example, with a bandwidth of one octave, the equalizer will contain 10 bands, with a bandwidth of 1/2 octaves – 15 bands, and Continue reading
In music, an ensemble consisting of four musicians or singers is called a quartet. The most widespread among them was the string quartet, consisting of two violins, viola and cello.
It appeared back in the 18th century, when amateur musicians, gathering in the evenings, spent their leisure time playing the stringed instruments. Over time, prominent musicians began to unite in quartets. Such ensembles performed at the courts of princes, in the noble rooms, and since the 19th century. – in concert philharmonic halls. Now the string quartet is one of the most common types of chamber ensemble.
However, there are still a number of varieties of quartets. By the composition of the instruments, quartets Continue reading
March 3, 1993 Thursday.
On this day, Kurt Cobain stayed at the Exelsior Rome 5-star hotel, after the canceled Nirvana tour in Munich and Offenbach. The reason for the failure of the voice.
He stayed at the hotel with his wife Curtney Love and daughter Francis, who specially went to Rome to meet with Kurt. Unexpectedly, in the middle of the night, Cobain takes 50 tablets of raipnol, and in combination with champagne. Curtney Love found the note, but it was never published.
March 4, Friday.
At 6:30 in the morning, Cobain is already in a coma, and an ambulance takes him to Umberto I hospital, where his stomach is washed; after 5 hours, ero is already being transported to a comfortable private American clinic. CNN Continue reading