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Subject reliability of impulse response Date
Thu Nov 21 2002 14:25
Author Werner Thurnheer
(towerlilt@swissonline.ch)
Dear Lars My triggered impulse resonse mesaurements are not reliable. Although the repeated frequency response curves of a small bar are somewhat caracteristic, the peaks shifts in frequency from measurement to measurement. Is it wrong to hang up the bars for measurement? Is the impulse (given by a 0.5 g wood ball as pendulum) to strong or not enough precise placed? – (Bevor learning to know WinMLS I could not finish an earlier experiment with small stripes of wood because I could not mesure the amplitude enough accuracily.) The mesured bars are 280x30x3mm, 270x30x9mm, 227x30x19mm, 185x19x15mm of spruce, maple and rosewood. Is there a proved measurement arrangement? Best regards, Werner
