Getting list of external filter coefficients to work
Joggies
9月 01 2024 | 8:24 午後
Hello, I am trying to create a patch to show roughly how the UA Starlight pedal works and I am trying to include filtering to the signal patch using actual convolution impulse responses from the pedal. I have created the IR using 'EQ Curve Analyser' (plugin) which allows you to export the amplitude data as a list of 1025 values however when using this data with the cascade or biquad object, there is no output. Could someone please explain what is going on here?
Stevon
9月 02 2024 | 5:48 午後
Hey,
I think you got something wrong there. Cascade~ is an object that stacks multiple biquad~filters. So it needs a list of filter coefficients to work, but what you send to the filter were just coordinates in a graph, which have nothing to do with calculating biquad filter responses.
Roman Thilenius
9月 02 2024 | 7:56 午後
you did what? you created an impulse reponse using a spectrum analyzer and then you sent the amplitudes into a biquad connected to a scope?!? :)
Joggies
9月 02 2024 | 8:19 午後
Hey Stevon, thanks for the reply. I made the same post on reddit and have been pointed in the right direction. I managed to work out that the data wasnt filter coefficients and got told about the invfreqs function on matlab so will give that a go