Hi,
I am working on a graphic equalizer on PC and want to show graphically the final frequency response. Can somebody please tell me the below:-
1) Given the center frequency, Q and gain, how do I plot the frequency response, please show me simple formula if possible
2) Its a 1/3rd octave graphic equalizer, how do I choose the Q factor of each band?
Thanks and Regards,
Wonderfulaudio
I am working on a graphic equalizer on PC and want to show graphically the final frequency response. Can somebody please tell me the below:-
1) Given the center frequency, Q and gain, how do I plot the frequency response, please show me simple formula if possible
2) Its a 1/3rd octave graphic equalizer, how do I choose the Q factor of each band?
Thanks and Regards,
Wonderfulaudio
Which programming language and 3rd party libraries (dsp, plotting, etc.) are you using? There are plenty of examples out there (for various languages) google search brings to you.
https://www.earlevel.com/main/2016/12/01/evaluating-filter-frequency-response/
To get the combined response of all 31 filters you need to sum the responses of each filter.
https://www.earlevel.com/main/2016/12/01/evaluating-filter-frequency-response/
To get the combined response of all 31 filters you need to sum the responses of each filter.
Thanks Jiiteepee for the linik but my maths is not that good. I need a simple formula or equation that: given instantaneous frequency, center frequency, gain/cut produces instantaneous resulting SPL.
Initially I plan to code it in java on windows desktop.
Initially I plan to code it in java on windows desktop.
In Vituixcad you can easily sim equalizer transfer functions, using blocs in which you can toggle Fc, Q, and Peaks 'n Valleys at will. The graphs will tell you right away what is happening.
Thanks for the Vituixcad tip Boden. However I need it on java/desktop. That way its easy to port to android which again is java based. With Android app I want to control a DSP equalizer with the said software and also ability to show the settings graphically
If you don't understand tech/math behind what you're planning to do there just use some DSP -library (as for an example Google search returned this Github page : https://github.com/psambit9791/jdsp (for sure, there are tens of these out there to be found)).