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Note that the last line must not have a comma at the end. If the file has less than ten biquads, then only
that number of biquads will be imported. For example, if importing a file with six biquads, the first six
filters will be set, and the last four will not be changed. (Note: if the last line ends with a comma, that
counts as an extra biquad.)
If the file contains more than ten biquads, then an error will be reported and no filters will be changed.
Crossover advanced mode
The Crossover blocks have eight biquads for each output channel. In Advanced mode, all eight biquads
need to be specified. After pasting in the coefficients, click on the Process button for them to take effect.
9.4.3
Biquad design software
Following are programs that can be used to design your biquad coefficients.
9.4.3.1
Biquad calculation spreadsheet
The community-developed biquad calculation spreadsheet allows many filter types to be calculated, including
notch filters, Linkwitz transforms, and filters with arbitrary Q-factor. Access this spreadsheet here (requires
Microsoft Excel):
http://www.minidsp.com/images/fbfiles/files/All_digital_coefs_v1-20101026.zip
9.4.3.2
Room EQ Wizard (REW)
Room EQ Wizard is a free acoustic measurement and analysis tool, available for Windows, Mac and Linux
platforms. It includes the ability to automatically generate a bank of parametric EQ biquads based on a
measurement. These coefficients can be saved to a file from REW and loaded directly into a PEQ bank in a
miniDSP plugin. Room EQ Wizard can be downloaded here:
http://www.roomeqwizard.com/#downloads
For guidance on using this feature, please refer to the app note
miniDSP Ltd, Hong Kong /
www.minidsp.com
/ Features and specifications subject to change without prior notice
Auto EQ with
REW.
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