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Modulation Transfer Functions: Definition and Measurement

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It is shown that the properly defined complex modulation transfer function (CMTF) is the Fourier Transform of the squared impulse response of a linear passive system. Methods are described for measuring the CMTF simultaneously at different frequencies.


Es wird gezeigt, daß die geeignet definierte komplexe Modulations-Übertragungsfunktion (CMTF) die Fourier-Transformierte der quadrierten Impulsantwort eines linearen passiven Systems ist. Es werden Methoden beschrieben, die CMTF gleichzeitig bei verschiedenen Frequenzen zu messen.


On montre qu'en définissant la fonction complexe de transfert de la modulation (CMTF) de façon correcte, on obtient la transformée de Fourier du carre de la réponse impulsionelle d'un système linéaire passif. On decrit des méthodes de mesure de la CMTF simultanément à des fréquences différentes.
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Document Type: Research Article

Publication date: November 1, 1981

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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