Dynamic Wave-Table OSC

[chackl]

Hello!

Just wanted to know if anyone did experiments with a wave-table-osc that is changing the wave-form by time by interpolating between 2 waves?

Thank you!
C.Hackl

[tulamide]

I only know of crossfading solutions with arithmetic oscillators, not wavetables. Those were made by Spogg and somebody else that I forgot

[Spogg]

I only know of crossfading solutions with arithmetic oscillators, not wavetables. Those were made by Spogg and somebody else that I forgot

I think this is about this synth:

viewtopic.php?f=3&t=4419&p=24991&hilit=quilcom+nine#p24973

It's on my list to make a new version at some point.

But I don't know anything about scanning wavetable oscillators, and I would like to. I think Adam did this in his Viper but that's a commercial product.

[nix]

what we could do is make a short audio of different cycles one after another,
these are read back with a counter with which you could program to different kind of reads
the audio is a mem or float array, and 'wave/mem read' is used to read the counter index

OceanSwift have done such a thing previously with FS

[martinvicanek]

Why not just read both wavetables and crossfade then

[deraudrl]

Just wanted to know if anyone did experiments with a wave-table-osc that is changing the wave-form by time by interpolating between 2 waves?

Why not just read both wavetables and crossfade then

From where I'm sitting, those sound like exactly the same thing.

[tektoog]

As you pronounced (wrote maybe better) the word dynamic,
my guess is that you probably will be changing table sizes...
I've spotted years ago, and then DWB confirmed, a "bug" when changing array sizes...
I've come up with a solution, as well as DWB, and it seems that DWB's fix was the one retained...
Here is a link to the fix:

viewtopic.php?f=2&t=2694&p=14009&hilit=dwb#p14009

Hope this helps to put you in the right track
Take care

[k brown]

More info needed - the OP is too vague.

[chackl]

Hello!

Thank you for the massive input - yes it seems that i realy failed explaining at some point

dynamic is not suposed to be "dynamic wave size" - the wave-table size is fixed

Why not just read both wavetables and crossfade then

Yes this is what i asked for.

As i experimented with FFTs some time ago i came across the idea to analyse a sound's wave form every example 0.05 second and generate multible wave-tables out of it. Then load each wave to a wave-table and put them into a mem array - and read the mem array by an interpolation - like two wave-tabel-read modules.

I have seen a project some time ago that had an optimiced wave-table-read with 2 interpolated wave-read modules after it. So i was thinking about extending this to a wave-array-read module with wave tables. (But i do not find the project - maybe someone else knows it)

I would be interested if this would leed to a possibility to do a "more complex" system here.

Thank you

[trogluddite]

The download in this post should give you a start with the wavetable reading parts. The thread is really about envelopes, but if you dig down into the dowload you'll find a "wavetable array" (mem array containing multiple wavetables), and an oscillator which can read any wavetable out of the array.