miniDSP Ltd, Hong Kong /
/ Features and specifications subject to change without prior notice
40
7.2.3
Biquad design software
Following are programs that can be used to design your biquad coefficients.
7.2.3.1
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
Be sure to set the sample rate to
48 kHz
on any worksheet that you use.
7.2.3.2
Room EQ Wizard (REW)
Room EQ Wizard (REW) 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
. When
calculating t
he EQ in REW, choose “C
-
DSP 8x12 DL” in the Equaliser section of the EQ window. (Be sure not to
choose “C
-
DSP 8x12,” as that has a different internal sample rate.)
