From the original SynthMaker forum (2004–2014), with its members’ names and dates.
lalo ·
hi guys!
argh..i'm lost again..
in this schematic
http://www.nusic.org/temps/PitchFrq.rar
i applied a 2 octave negative transpose to the pitch then i converted that to a frq. value...
i forgot...is'nt the pitch value describing the 'midi note'?
i mean 60 should be C3...right?
what's goin' on in the schematic is that below a certain octave the pitch start to 'stretch' (a played major third is a perfect 4th and if you go lower it stretches even more)..it seems to be no more related to midi notes..
?
maybe i fogot something jorge told me about this 🙂
jorge ·
thanks lalo, I think you just found a bug.
You're correct that Pitch should be the Midi note.
The PitchToFreq component uses a taylor aproximation, maybe it needs one or two more terms to make it precise enough specially for very low and very high notes. It would be good if we could get a good version with the code component first and I'd hard code it inside the PitchToFreq component. I can also just include another term in the taylor aproximation and see if that helps, your help would be great on this.
lalo ·
jorge wrote: thanks lalo, I think you just found a bug.
You're correct that Pitch should be the Midi note.
The PitchToFreq component uses a taylor aproximation, maybe it needs one or two more terms to make it precise enough specially for very low and very high notes. It would be good if we could get a good version with the code component first and I'd hard code it inside the PitchToFreq component. I can also just include another term in the taylor aproximation and see if that helps, your help would be great on this.
cool 🙂
i'll help with...ears...my code skills..or better my math ones are as you know..at a insect level 😀
but i've take decison to take some serious math lesson from my girlfriend's father wich is a great math teacher 🙂
lalo
jorge ·
lalo wrote: i've take decison to take some serious math lesson from my girlfriend's father wich is a great math teacher 🙂
If you get those maths lessons I'd be very interested in knowing what you've learned. I think it would be great to have some threads here about maths maybe in the DSP forum or we could always create a new forum. I think there's quite a lot of smart people around that we could all learn from.
lalo ·
i'll do for sure 🙂
anyway i'll start on july 'cause before i have to teach/play/compose/reharse
a lot 🙂...
but i have picked up some book to prepare myself in the meantime 🙂
lowe
lalo
Sk ·
Well if you need math knowledge, I think I can provide it. I'm studying electronic engineering, so I think I can give you hints about maths and basic circuit working. But you have to tell what is useful for this purposes because I'm a newbie in synthesizing.
unkargherth ·
Nice idea jorge !! a lot of us would be happy if somebody explains the maths "for the masses"
Your comment about math took me to thisidea...
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