[PD] [PD]spatialization : filter problems

[e skogen]

julien.breval at tremplin-utc.net wrote:

>>*About (classic) low/high shelving
>>I need this for my patch
>>I have programmed low and high shelving abstractions, using hip~ and lop~,
>>but
>>these are quite complicated (difficult to add or remove some frequencies
>>with
>>the SAME parameter)
> 
> 
> this latter problem was solved using this technique : adding +~ 1 to the signal 
> before processing and -~ 1 after processing
> therefore all the sound processing is done with positive-value signals, so it's 
> easy to add or substract some frequencies to the signal    
> 
> 
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i guess i'm not following this, could you send an example perhaps?



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