All tutorials related to equalization of a system with miniDSP platforms.
 Page:1

# TOPIC:

## How do I accomplish this? 8 years 2 weeks ago #21115

 lito Topic Author Offline New Member Posts: 4 Thank you received: 0 Hi, How do accomplish this filter. -1 db/Oct, 10 db across 20 hz to 20kh. Thanks Lito Please Log in or Create an account to join the conversation.

## How do I accomplish this? 8 years 2 weeks ago #21116

 dreite Offline Platinum Member Posts: 1832 Thank you received: 793 The easiest way would be to program three shelving filters with center frequencies of 63Hz, 632Hz, 6324Hz, each with a 3.3db gain and Q=0.5. That will yield a "tilt"ed response across the full audio band just as you have specified. There are other solutions as well, but that's easiest. Dave. The following user(s) said Thank You: devteam, Wim Meekel, Wanderer Please Log in or Create an account to join the conversation.

## How do I accomplish this? 8 years 2 weeks ago #21140

 devteam Away Administrator Posts: 9177 Thank you received: 1486 Nice trick Dave! We didn't think of that one.. DevTeam miniDSP, building a DSP community one board at a time. For any official support, please contact our technical support team directly @ support.minidsp.com/support/home Please Log in or Create an account to join the conversation.

## How do I accomplish this? 3 years 7 months ago #46694

 rup40 Offline New Member Posts: 3 Thank you received: 1 Thanks, would it be possible to explain how you have calculated this? Please Log in or Create an account to join the conversation.

## How do I accomplish this? 3 years 7 months ago #46702

 dreite Offline Platinum Member Posts: 1832 Thank you received: 793 Thanks, would it be possible to explain how you have calculated this? Do you mean the frequencies? In miniDSP programming, the shelving filters are defined using the center of the two cutoff frequencies. (F1 & F2) Center frequency = SQRT (F1 * F2) The audio range is composed of three decades (20-200, 200-2000, 2000-20000) so this yields center frequencies of 632, 632, and 6324 Hz. (Shelving filters set to Q=0.5, which is equivalent to first-order.) In the OP's case, he was asking for a 10db level change across the audio range, so that's where the 3.3db (for each) gain setting comes from. Dave. Please Log in or Create an account to join the conversation. Last edit: by dreite. Reason: correction
 Page:1
Moderators: devteam