group delay characteristic

A plot of the slope of the phase/frequency characteristic over the range of frequencies of interest, i.e., a graph of dφ/dω, where φ is the phase shift in radians at a particular frequency and ω is the angular frequency in radians per second.; 在所關心的頻率范圍之內的相頻特性曲線的斜率曲線,即dφdω曲線。這里φ是在一個特 殊頻率上的相移,以弧度表示,ω是角頻率,以弧度/秒表示。