maxplanck735@hotmail.com

I'm trying to make a bank of sine oscillators, where I can connect an envelope to control each oscillator's amplitude, one envelope per oscillator.

What is the best object(s) to use for this? I looked at oscbank~, but I don't think it will work for this application because its inputs only feed data to the oscillator currently selected at the index port (i.e. multiple oscillators can't be controlled simultaneously).

I know that I could simply use a group of cycle~ objects, but I'm just wondering if there's a way of doing this that will involve less objects (to help keep the structure simple).

I'm trying to make a bank of sine oscillators, where I can connect an envelope to control each oscillator's amplitude, one envelope per oscillator.  

What is the best object(s) to use for this?  I looked at oscbank~, but I don't think it will work for this application because its inputs only feed data to the oscillator currently selected at the index port (i.e. multiple oscillators can't be controlled simultaneously).

best-objects-to-use-for-making-a-bank-of-amplitude-enveloped-sine-oscillators

the index inlet for oscbank~ takes signal input. is that still too 

slow for you to specify oscillator amplitude?

On Aug 20, 2007, at 3:46 PM, Max Planck wrote:

> I'm trying to make a bank of sine oscillators, where I can connect 

> an envelope to control each oscillator's amplitude, one envelope 

> What is the best object(s) to use for this? I looked at oscbank~, 

> but I don't think it will work for this application because its 

> inputs only feed data to the oscillator currently selected at the 

> index port (i.e. multiple oscillators can't be controlled 

> I know that I could simply use a group of cycle~ objects, but I'm 

> just wondering if there's a way of doing this that will involve 

> less objects (to help keep the structure simple).

the index inlet for oscbank~ takes signal input.  is that still too  
slow for you to specify oscillator amplitude?

>
> I'm trying to make a bank of sine oscillators, where I can connect  
> an envelope to control each oscillator's amplitude, one envelope  
> per oscillator.
>
> What is the best object(s) to use for this?  I looked at oscbank~,  
> but I don't think it will work for this application because its  
> inputs only feed data to the oscillator currently selected at the  
> index port (i.e. multiple oscillators can't be controlled  
> simultaneously).
>
> I know that I could simply use a group of cycle~ objects, but I'm  
> just wondering if there's a way of doing this that will involve  
> less objects (to help keep the structure simple).
>
> Thanks, any help is much appreciated
>


it just seems like an overly complicated way to do things, and i don't fully understand how it would work...

Plug a phasor~ (positive sawtooth) oscillator multiplied by the number of sine oscillators that you want into the index port. When the output of phasor~ isn't an integer (say 1.4), then which sine oscillator does oscbank~ route its magnitude input to? (sine oscillator #1 or sine oscillator #2?)

Also, I want to have one envelope to control the magnitude of each sine oscillator. How could I do this if I used oscbank~? The only way I can think of making it work would be to route the output of every envelope to one switch, route the output of this switch to the magnitude input of oscbank~, and use phasor~ to control the switch.

The main problem that i think i see with this method is that the sampling frequency at oscbank~'s magnitude input will be equal to the sample rate divided by the number of oscillators. This could result in aliasing if I ever wanted to modulate oscbanks~'s oscillators' amplitudes (or frequencies) at audio frequencies.

If i'm wrong here, somebody please enlighten me!

it just seems like an overly complicated way to do things, and i don't fully understand how it would work... 

Plug a phasor~ (positive sawtooth) oscillator multiplied by the number of sine oscillators that you want into the index port.  When the output of phasor~ isn't an integer (say 1.4), then which sine oscillator does oscbank~ route its magnitude input to? (sine oscillator #1 or sine oscillator #2?)

Also, I want to have one envelope to control the magnitude of each sine oscillator.  How could I do this if I used oscbank~?  The only way I can think of making it work would be to route the output of every envelope to one switch, route the output of this switch to the magnitude input of oscbank~, and use phasor~ to control the switch.  

The main problem that i think i see with this method is that the sampling frequency at oscbank~'s magnitude input will be equal to the sample rate divided by the number of oscillators.  This could result in aliasing if I ever wanted to modulate oscbanks~'s oscillators' amplitudes (or frequencies) at audio frequencies.

If i'm wrong here, somebody please enlighten me!


best object(s) to use for making a bank of amplitude enveloped sine oscillators