User`s manual

Table Of Contents
Audiomatica Srl MLS - Frequency Response 10/07/2001 18.48.53
CH A dBSPL Unsmoothed 51.2kHz 16K Rectangular File: tweeteralone.mls
100 1k 10k 20k20 Hz
110.0
dBSPL
180.0
Deg
100.0 108.0
90.0 36.0
80.0 -36.0
70.0 -108.0
60.0 -180.0
CLIO
Figure 10.27
To finish this difficult paragraph we will summarize what we did with some
comments. Measuring acoustic phase response is often far from a "press a button
and get it" procedure. We went through several phase plots, all looking different
but, this is an important point, all correct. It is common to identify the processed
phase as the true one only because it looks better. It is important to stress that the
true phase is that of Figures 10.18 and 10.19. CLIO, which is intended as a
computer based instrument, can, as we will see later, easily calculate the summed
response of woofer and tweeter after they are taken separately but with the same
microphone position. What we did with our complicated procedure was to obtain a
response as if the microphone would have been exactly in the acoustic center of the
driver. The most obvious application is to furnish data to cross-over CAD programs.
10 MLS & LOG CHIRP 129