User`s manual

Table Of Contents
12 WATERFALL , DIRECTIVITY & 3D
12.1 INTRODUCTION
The Waterfall, Directivity & 3D post processing routines (3D post-processing is
available only with QC version software) give CLIO the possibility of making 3-
D or Color plots by adding a third dimension (time or degrees) to classical
amplitude-frequency graphs and to visualize and export 3D polar response
balloons.
Waterfalls are used to characterize the anechoic sound decay of a loudspeaker or
the sound decay in a room.
The Waterfall post processing permits the following 3-D or Color types of analysis:
- Cumulative spectral decay (CSD)
- Energy Time Frequency (ETF)
Figure 12.1
Directivity analysis characterizes the radiation of a loudspeaker versus vertical or
horizontal angle.
The Directivity post processing permits the following analysis:
- 3-D directivity (waterfall like)
- Color map directivity
- Classical polar plots
Figure 12.2
12 WATERFALL , DIRECTIVITY & 3D 153