Preliminary
miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice 59
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.
8.4.3 Biquad design software
Following are programs that can be used to design your biquad coefficients.
8.4.3.1 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
8.4.3.2 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 Auto EQ with REW.
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