User`s manual

31
Figure 7-25: Normalized Spectral Graphic Equalizer
This completes the Spectral Graphic Equalizer mini-tutorial.
7.11 Imported Coeffecient File
Application:
The Imported Coefficient file is available for inputing filters created via other synthesis software.
Several math software packages (such as Matlab) are available from other vendors. These
packages provide high level math functions for computing complex filters. Once the filters have
been calculated the results can be stored in floating point format in a standard text file. The
MicroDAC IV Configuration Software is able to import these files and convert them into the format
necessary for transfer into the MicroDAC IV.
Figure 7-26: Open Imported Coefficient File Dialog Box
Description of controls are follows:
Open File Dialog: The only control available for this filter is the
Box Open File Dialog Box that appears when the Control button is pressed. This
window allows the user to select the filter file from any location on the local
computer or network. The default file extension is ".txt". If this is not the file
extension of the coeffiecient file, then click on the Files of Type selection box to
choose "All Files (*.*)". This option will allow you to see all files in the current
directory. Once the appropriate file is selected press OK. (The "Open as read-
only" is not applicable to the coefficient file and is to be ignored.)
7.11.1 Coefficient File Format
The coefficient file format is restricted to only accept floating point numbers in the range of +1.0 and -1.0.
If a coefficient exceeds this limitation the software will clip the coefficient to its closest maximum. Each
coefficient needs to be in standard decimal notation or scientific notation. The following are some
examples of floating point coefficients in decimal format:
0.3455