Premium
An index of phase distortion
Author(s) -
Clarke B. R.
Publication year - 1986
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.4490140305
Subject(s) - phase distortion , distortion (music) , mathematics , amplitude distortion , impulse response , cascade , phase (matter) , measure (data warehouse) , equivalence (formal languages) , mathematical analysis , nonlinear distortion , physics , computer science , engineering , telecommunications , discrete mathematics , bandwidth (computing) , chemical engineering , database , amplifier , quantum mechanics
Measures exclusively reflecting phase distortion are examined and a new phase distortion ‘index’ is proposed. This index, based on the mean‐squared degradation in the impulse response of a filter, is shown to be equivalent to a phase distortion ‘spot‐measure’ using the variation in the peak value of the impulse response, due to phase distortion, of the cascade combination of two identical filters. This equivalence allows the spot‐measure to be employed for rapid phase distortion evaluation without loss of accuracy in reflecting phase distortion.