How to create new Filters documentation ?

Wonder how to create new filters to optmize my workflow or even merge some filters ( the main purpose )

I would like to create a speed/pitch compesation filter, isntead of going ot properties and pitch to adjust both to the desired improved or reduced speed ( some apps do it natively )

Speed and Pitch filters already exist, not only in Properties.

Would like to merge it into just 1 filter

thank you fro the link will check

It is in 1 filter

In general, we will not accept PRs that merge filters. There are thousands of possible combinations! Make and use filter sets.

Oh !! Didnt know that!! I am checking filters in a not very smart ig then.