cadran gradué Extension Filters / Weighting Network ; filter input / output ; fonction Selector 1/3 Octave 0 db - Octave -10 db
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Brüel & Kjaer
Copenhague
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Instruments B & K
Paris, 2 place du Maroc
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Ouvert :
Longueur : 38 cm
Largeur : 20.5 cm
Hauteur : 29 cm
Fermé :
Longueur : 38 cm
Largeur : 20.5 cm
Hauteur : 29 cm
Diamètre :
Informations non disponibles
Informations non disponibles
Marque "Brüel & Kjoer Copenhagen".
"The Band-Pass Filter Set Type 1612 is intended for analysis, selective measurements and selection of noise signals in 1/3 or 1/1 octave bands covering the frequency range 22-45 000 Hz (c/s). The Filter Set contains additionally four frequency weighting networks. The three of them are the 'A', 'B' and 'C' networks the characteristics of which are in accordance with those proposed by I.E.C. for Prceision Sound Level Meters. The fourth network gives a linear frequency response 20-45000 Hz (c/s)" (notice technique Instructions and applications, Band-Pass Filter Set type 1612, Copenhague, Brüel & Kjoer, 1965, p. 9).
Notice technique Instructions and applications, Band-Pass Filter Set type 1612, Copenhague, Brüel & Kjoer, 1965.