highquefrency
Highquefrency is a term used in a fictional framework of time-series analysis to describe the degree to which a signal's energy is concentrated in high-frequency components. It is quantified by HQF = ∑_{f>f_c} S(f) / ∑_{f} S(f), where S(f) denotes the spectral density and f_c is a chosen cutoff between low and high frequencies. HQF ranges from 0 to 1; values near 1 indicate a high concentration of energy in frequencies above f_c, while values near 0 indicate dominance of low-frequency content.
Interpretation of HQF centers on the temporal resolution and processing implications of a signal. Signals with
Applications of the concept span signal processing, sensor design, and simulation. HQF can guide decisions about
Origin and usage notes: The term “quefrency” is a neologism blending frequency with quasi and efficiency, used
See also: Frequency, Spectral density, Nyquist rate, Time-series analysis, Signal processing.