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

12.6 MEASURING LOUDSPEAKER SINGLE POLAR DATA (1D MODE)
We will use a PC controlled turntable under CLIO's control, and the automation
possible within the MLS control panel using the Autosave and naming rules.
Now suppose we want to measure and give a graphical representation of the polar
response of the same two ways loudspeaker analyzed in 12.4.
We need to measure its anechoic frequency response, at various angles and save
the files following the rules given in 12.5.1.
12.6.1 PREPARING AUTOSAVE AND THE MLS CONTROL PANEL
For this test we would like to measure the speaker from -180° to +180° (in
intervals of 5°) relative to its front baffle.
The MLS measurement should be set in a particular way in order to automatically
acquire the responses at various horizontal angles. To do this we will use the
autosave function, the loop mode and the link to the turntable control.
Let's start with setting the autosave function (see also 5.3). Pressing Alt-F2 we
recall the Autosave Setting dialog (fig.12.11); here we input the desired file name
('RogersHalfChirp'), start (-180) increment (5) and total (73) values.
Figure 12.11
The MLS menu is now ready to start taking measurements; we only need to
properly set the turntable and its control.
164 12 WATERFALL , DIRECTIVITY & 3D