Table of Contents
Advertisement
C H A P T E R
4 :
4.4.6 Logging Results
After a measurement has been performed, the final results that were achieved,
can be logged to a text file. The text file contains tab separated values and can
be directly opened with Excel for further evaluation. To log the current results,
simply make a right mouse button click on one of the diagrams and select
Final Result
from the context menu. Alternatively choose
Result
from the menu bar. In the file select box that pops up, choose the file to
which the results shall be written and wether an eventually existing file shall be
deleted or wether the results shall be appended to it. The file select dialog also
allows adding an optional comment to the log entry.
4.4.7 Performing Online Measurements in Realtime
After connecting your cables and making the settings in the mixer of the audio
board, according to chapter
steps of the Measurement Setup Wizard, select the radio button Soundboard
(see Figure 4.44). When changing the current settings of the signal format,
click on the Format button and the dialog shown in Figure 4.45 will appear.
Here change the Sample Rate, the number of Channels or the bit resolution
(Bits per Sample) of your digital signal format. When having analog signals, the
format depends on the characteristics of the audio interface board.
At the bottom of the dialog you see two radio buttons, labelled "Analog",
respectively "Digital (AES-EBU)". These buttons are for defining an analog or a
digital input format. If the system has a Digigram audtio board installed, these
radio buttons are disabled, since the selection of analog or digital format has to
be made in the mixer dialog of the Digigram audio interface. Please refere to
chapter 4.2 for details.
Note:
Please note the input settings become valid with the start of the
next measurement. By default the inputs are switched to analog
after each start of OPERA™.
Note:
The available sample rates for online measurements are defined
mainly by the selected measurement algorithm. PEAQ e.g. limits
these to 44.1 and 48kHz.Digital input signals are limited to 32, 44.1
or 48kHz due to the AES/EBU format. In case of digital input
signals, the sample rate and format selected with the start wizard
must match the sample rate and format of the AES/EBU data.
The further proceeding of the Measurement Setup Wizard is as described in
chapter 4.4.3.
G E T T I N G
T O
K N O W
F R A M E W O R K
4.2
measurement may begin. During the first two
74
T H E
O P E R A ™
File | Log Final
Log
Advertisement
Table of Contents
