hi,

how do i change the amplitude of low pass filter?? is there any 4 poles of low pass filter??

thanks.

You need to add a gain compensation. [lop~] does not correct for lost power, so if you go from [lop~ 8000] to [lop~ 4000] you lose about 3dB, and another -3dB going from [lop~ 4000] to [lop~ 2000].

hmm....i wanted to change the amplitude of the cutoff point of a Low Pass Filter to create the resonance effects???anyway to do that???

thanks in advance

Not with [lop~], it is not a resonant filter. Use [vcf~] for that instead.

aargghh..i'm not sure why is it not working as i expected..the adsr and vcf are not function properly, can someone just check for me pls..i m so sick of this problem........

http://www.pdpatchrepo.info/hurleur/PD_ADSR_VCF.pd

you have two signals running into the right outlet of a [*~ ]. what you need to do is add the osc~ signals first, and then multiply by the envelope

[osc~] [osc~]
| /
| /
| /
[+~ ]
|
| [adsr~]
| |
[*~ ]

and you problem with the 'vcf~' is that it's not connected to anything. you should connect it to the [outlet~]

also, vcf~ 's middle inlet takes a value in hertz for the cutoff, so a simple number box is not going to help much because you usually want values between 0-20000hz. so add an object like [mtof] to scale the values to hertz