User`s manual
Table Of Contents
- CONTENTS
- 1 INTRODUCTION
- 2 THE CLIO SYSTEM
- 3 CLIO INSTALLATION
- 3.1 MINIMUM PC CONFIGURATION
- 3.2 FW-01 DRIVERS INSTALLATION UNDER WINDOWS XP
- 3.3 FW-01 DRIVERS INSTALLATION UNDER WINDOWS VISTA AND 7
- 3.4 SOFTWARE INSTALLATION
- 3.5 THE 'CLIO BOX'
- 3.6 RUNNING CLIO FOR THE FIRST TIME
- 3.7 SYSTEM CALIBRATION
- 3.8 CLIO SERIAL NUMBER AND DEMO MODE
- 3.9 TROUBLESHOOTING CLIO INSTALLATION
- 4 CLIO BASICS
- 5 SYSTEM OPERATIONS AND SETTINGS
- 6 COMMON MEASUREMENT INTERFACE
- 7 SIGNAL GENERATOR
- 8 MULTI-METER
- 9 FFT, RTA AND “LIVE” TRANSFER FUNCTION
- 10 MLS & LOG CHIRP
- 11 SINUSOIDAL
- 12 WATERFALL , DIRECTIVITY & 3D
- 12.1 INTRODUCTION
- 12.2 WATERFALL, DIRECTIVITY & 3D CONTROL PANEL
- 12.3 WATERFALL SPECIFIC CONTROLS
- 12.4 MAKING A CUMULATIVE SPECTRAL DECAY
- 12.5 DIRECTIVITY SPECIFIC CONTROLS
- 12.6 MEASURING LOUDSPEAKER SINGLE POLAR DATA (1D MODE)
- 12.7 REPRESENTING SINGLE POLAR DATA
- 12.8 3D SPECIFIC CONTROLS
- 12.9 MEASURING LOUDSPEAKER SINGLE POLAR DATA (3D MODE)
- 12.10 MEASURING FULL SPHERE LOUDSPEAKER POLAR DATA (3D MODE)
- 12.11 REPRESENTING 3D BALLOON DATA
- 12.12 EXPORT 3D BALLOON DATA
- 13 MEASURING IMPEDANCE AND T&S PARAMETERS
- 14 LINEARITY & DISTORTION
- 15 ACOUSTICAL PARAMETERS
- 16 Leq LEVEL ANALYSIS
- 17 WOW AND FLUTTER
- 18 WAVELET ANALYSIS
- BIBLIOGRAPHY
- NORMS
be exactly the same.We will take this opportunity to introduce the use of the
Wrapped Phase Button. Figures 10.22 and 10.23 shows the tweeter phase curve,
unwrapped and wrapped.
Audiomatica Srl MLS - Frequency Response 07/07/2001 10.15.18
CH A dBSPL Unsmoothed 51.2kHz 16K Rectangular File: grid.mls
100 1k 10k 20k20 Hz
110.0
dBSPL
180.0
Deg
100.0 -3132.0
90.0 -6444.0
80.0 -9756.0
70.0 -13068.0
60.0 -16380.0
CLI O
Audiomatica Srl MLS - Frequency Response 07/07/2001 10.15.18
CH A dBSPL Unsmoothed 51.2kHz 16K Rectangular File: grid.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
CL IO
Figure 10.22 and 10.23
The reader may wonder if these figures are correct at all and if they have the same
usefulness, at least visually. Well, the curves are absolutely correct; their visual
usefulness is zero for the wrapped curve and low for the unwrapped. Difficulties in
getting simple visual information from these curves arise because they are the sum
of two effects. The first one is the devices own phase response. The second is the
time of sound flight. The latter does affect the curves much more than the first one,
completely burying it. The good news is that it is often possible to separate these
two effects. However, the bad news is that this is not an easy task. Trying to explain
it, without going into heavy mathematics is very difficult. The bibliography in this
user manual should be considered as an integral part of it here. Within CLIO the
time of flight can be removed in several different ways, with different degrees of
accuracy. The most accurate is also the most complicated and is how we are going
to proceed. Fig. 10.24 introduces us to Minimum Phase, which is the heart of the
whole procedure.
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
CL I O
Figure 10.24
We obtained it by selecting minimum phase in the MLS phase Drop Down Menu
(right click on the phase speed button).
Certain well-behaved systems are defined as Minimum Phase. In these, the phase
10 MLS & LOG CHIRP 127