Please post your messages related to electro-acoustical measurements
Subject Be aware of time variance Date
Sun Sep 22 2002 06:00
Author Bob Hagenbach
(rchagenbach@hotmail.com)
Lars,
I want a measurement system that will give me the following "raw" data at each frequency (not smoothed data. i.e. octave, 1/3 octave et-cetera) and angle 1) In-phase part 2) Quadrature part
I want to be able to put a “time window” around the direct sound so I can remove any reflections. Does the width of the time window affect the speed of the measurement like the present implimentation of TDF (TEF20) does?
Being able to post process the data, after I gather it, so I could produce the following information would be nice.
1) Amplitude vs. Frequency response 2) Phase vs. Frequency response 3) Impulse response 4) Doublet response (Hilbert transform of Impulse response)
