Help with clicks in first very simple synth

jorge · 1 Apr 2005

Hi mathman,

mathman wrote: Perhaps I need to add something to scale the output so it stays within a certain range?

Exactly, try this:

[old link] If you need more help let us know.

Shifrin · 1 Apr 2005

<edit>

Jorge beat me to it 🙂

</edit>

jorge · 1 Apr 2005

Hi Shifrin

Shifrin wrote: <edit>

Jorge beat me to it 🙂

</edit>

🙂, you could have left yours, it's always good to have a second opinion. Actually, what you said about clipping was useful. I'd like to know what kind of clipping SM should do internally.

Shifrin · 2 Apr 2005

jorge wrote: Hi Shifrin

Shifrin wrote: <edit>

Jorge beat me to it 🙂

</edit>

🙂, you could have left yours, it's always good to have a second opinion. Actually, what you said about clipping was useful. I'd like to know what kind of clipping SM should do internally.

Yeah I should have left it 😉 Will do next time! To be honest I'm not sure which type of clipping would be best. It seems at the moment that data sent to the sound card is wrapping around, is that right? I.e. 16bit data that if over 32767 or whatsever simply wraps back around to for example 12345 in the case of 45112? Maybe I've got that wrong but either way some sort of limiting would be grand 🙂

Shif.

mathman · 2 Apr 2005

Thanks guys 🙂

As it happens I do have a couple more questions:

(1) How did you decide upon a value of 0.2 for scaling down?

(2) I set hold to true using the output of a component which compares 2 values and outputs true if they are equal. I guess there must be an easier way? (Is an INT of 1 true?)

Thanks in advance

stefan · 2 Apr 2005

jorge wrote: Hi Shifrin

Shifrin wrote: <edit>

Jorge beat me to it 🙂

</edit>

🙂, you could have left yours, it's always good to have a second opinion. Actually, what you said about clipping was useful. I'd like to know what kind of clipping SM should do internally.

Imo, just basic clamping within the DS Out module. Wrapping sucks. 🙂

lalo · 2 Apr 2005

what would be nice is...

adapt the volume to the number of voices played toghether.... as a module or option... so if you play 6 notes together the output doesn't clip..

lalo

stefan · 2 Apr 2005

lalo wrote: what would be nice is...

adapt the volume to the number of voices played toghether.... as a module or option... so if you play 6 notes together the output doesn't clip..

lalo

That would sound dreadful most of the time 🙂

Shifrin · 2 Apr 2005

stefancrs wrote: Imo, just basic clamping within the DS Out module. Wrapping sucks. 🙂

Yeah, that'd work for me 🙂

Shif.

stefan · 2 Apr 2005

Shifrin wrote: stefancrs wrote: Imo, just basic clamping within the DS Out module. Wrapping sucks. 🙂

Yeah, that'd work for me 🙂

Shif.

And maybe a "clip indicator" on the actual component.

Shifrin · 2 Apr 2005

stefancrs wrote: Shifrin wrote: stefancrs wrote: Imo, just basic clamping within the DS Out module. Wrapping sucks. 🙂

Yeah, that'd work for me 🙂

Shif.

And maybe a "clip indicator" on the actual component.

Read my mind 😉

Shif.

lalo · 2 Apr 2005

stefancrs wrote: That would sound dreadful most of the time 🙂

sorry for my bad english but what does it mean 'dreadful' ?

full of rasta hairs? 😀

lalo

stefan · 2 Apr 2005

lalo wrote: stefancrs wrote: That would sound dreadful most of the time 🙂

sorry for my bad english but what does it mean 'dreadful' ?

full of rasta hairs? 😀

lalo

Haha. It really OUGHT TO! No, it means "horrible" 🙂

Shifrin · 2 Apr 2005

lalo wrote: sorry for my bad english but what does it mean 'dreadful' ?

full of rasta hairs? 😀

lalo

Hahaha 😀

Shif.

malc · 3 Apr 2005

mathman wrote: (1) How did you decide upon a value of 0.2 for scaling down?

0.2 would allow you to play up to five notes at once without distortion. Each note's signal woild run from 0 to 0.2 instead of 0 to 1. I don't think there was any particular reason Jorge picked this value.

mathman wrote: (2) I set hold to true using the output of a component which compares 2 values and outputs true if they are equal. I guess there must be an easier way? (Is an INT of 1 true?)

Indeed, ints are converted to booleans automatically: 0 is false and everything else is true.

lalo wrote: full of rasta hairs?

That's terrible lalo - worse than one of mine! 🙂

lalo · 3 Apr 2005

malc wrote: lalo wrote: full of rasta hairs?

That's terrible lalo - worse than one of mine! 🙂

😀 😀 you know i'm a stoopeed cat 😀

lowe

lalo

lalo · 3 Apr 2005

malc wrote: mathman wrote: (1) How did you decide upon a value of 0.2 for scaling down?

0.2 would allow you to play up to five notes at once without distortion. Each note's signal woild run from 0 to 0.2 instead of 0 to 1. I don't think there was any particular reason Jorge picked this value.

that's why i said in this thread that a primitive modules that return the actual ongoin' polyphony would be very helpful if one want to do a kind of 'automatic' gain level... even if it sounds ....dreadful ( 😀 this time i'll shut up) can be useful in some occasion. just my 2 cents... ..waitin' for stefan tellin me i'm wrong 😀 ....

lowe lalo

stefan · 3 Apr 2005

lalo wrote: malc wrote: mathman wrote: (1) How did you decide upon a value of 0.2 for scaling down?

0.2 would allow you to play up to five notes at once without distortion. Each note's signal woild run from 0 to 0.2 instead of 0 to 1. I don't think there was any particular reason Jorge picked this value.

that's why i said in this thread that a primitive modules that return the actual ongoin' polyphony would be very helpful if one want to do a kind of 'automatic' gain level... even if it sounds ....dreadful ( 😀 this time i'll shut up) can be useful in some occasion. just my 2 cents... ..waitin' for stefan tellin me i'm wrong 😀 ....

lowe lalo

Well, such a component would be useful. I'd never use it for that purpose, but for other things. Like showing number of voices played or so. Ofcourse, you could use it for an ugly auto-gain control if you like 🙂

lalo · 3 Apr 2005

stefancrs wrote: Well, such a component would be useful. I'd never use it for that purpose, but for other things. Like showing number of voices played or so. Ofcourse, you could use it for an ugly auto-gain control if you like 🙂

fair enough 🙂 freedom is the beautiful thing in the world 🙂

you know..i like to do ugly things 😀

is there a beautiful tune played by Ornette Coleman (wich is one of my favourites musicians/composer/improviser) wich is entitled 'ugly beauty' (by Monk one of my gurus too)...

everything is relative...even me 😀

lowe and thank you very much for your opinions/help stefan

lalo

Tom7777 · 4 Apr 2005

Maybe Malc and Jorge should make a peak max/limit/cutter module that has a input, high and low input and then cuts (Makes high or low) anything below or above the values set. This would be a great and simple way to stop clicking and you could use them on more than part of a synth also and there would be alot of ways to use them also apart from stopping clicks. If you guys think thats a good idea for a module please post a reply or something to let people know its wanted (If it is?) because thats something i would like to see made for sure. 🙂

stefan · 4 Apr 2005

Here you go: clamp.osm

Tom7777 · 4 Apr 2005

Nice one 🙂 I wish i could code DSP also.... I gonna try to learn it. I bet you can make a load of modules using it that are hard to make using the default modules 🙂

stefan · 4 Apr 2005

Tom7777 wrote: Nice one 🙂 I wish i could code DSP also.... I gonna try to learn it. I bet you can make a load of modules using it that are hard to make using the default modules 🙂

Doing a poly version working just like my mono clamper is really easy:

clampPoly

Tom7777 · 4 Apr 2005

Cool thanks 🙂