high-frequency characteristic
1High-intensity focused ultrasound — Contents 1 Theory 2 Aiming 3 How HIFU works 4 Method of use …
2Frequency response — is the measure of any system s spectrum response at the output to a signal of varying frequency (but constant amplitude) at its input. In the audible range it is usually referred to in connection with electronic amplifiers, microphones and… …
3High altitude nuclear explosion — High altitude nuclear explosions have historically been nuclear explosions which take place above altitudes of 50 km, still inside the Earth s atmosphere. Such explosions have been tests of nuclear weapons, used to determine the effects of the… …
4Frequency compensation — In electrical engineering, frequency compensation is a technique used in amplifiers, and especially in amplifiers employing negative feedback. It usually has two primary goals: To avoid the unintentional creation of positive feedback, which will… …
5High rising terminal — The High Rising Terminal (HRT), also known as uptalk, upspeak or High Rising Intonation (HRI), is a feature of some accents of English where statements have a rising intonation pattern in the final syllable or syllables of the utterance.… …
6Utility frequency — The waveform of 230 volt, 50 Hz compared with 110 V, 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency at which alternating current (ac, also AC) is transmitted from a… …
7Cutoff frequency — This article is about signal processing. For other uses, see Cutoff (disambiguation). Magnitude transfer function of a bandpass filter with lower 3 dB cutoff frequency f1 and upper 3dB cutoff frequency f2 …
8Light characteristic — Symbols and abbreviations for light characteristics A light characteristic is a graphic and text description of a navigational light sequence or colour displayed on a nautical chart or in a Light List with the chart symbol for a lighthouse,… …
9Time-frequency analysis — is a body of techniques for characterizing and manipulating signals whose component frequencies vary in time, such as transient signals.Whereas the technique of the Fourier transform can be used to obtain the frequency spectrum of a signal whose… …
10Low-frequency oscillation — The term low frequency oscillation (LFO) is an audio signal usually below 20 Hz which creates a pulsating rhythm rather than an audible tone. LFO predominantly refers to an audio technique specifically used in the production of electronic music.… …
