X/Y Pad to fade between four sound sources

[Korhan]

Hi there,

I am trying to build a sample player in maxforlive that uses one X/Y pad to crossfade between four sound sources in a way that:

- each source is assigned to one of the corners
- when the pointer is at the center of the pad, all sound sources play at quarter volume.

does anyone know how to do this?

I think I can build a 2D lookup table with the relevant volumes (a low resolution table and use line to avoid jumps between values) for each sample. Is there an easier way to do this?

In fact I don't know how to make a 2D look up table, but I guess the secret lies in Jitter.

Thanks,
Korhan

[m_messier]

Start with the Max Api SendsXnodes program it to control 4 tracks in Live with Max Api AMap4.amxd

[chapelier fou]

Been trying to do these kinds of things too, it drove me mathematically crazy.
As far as i know there is an abstraction contained in max called 'Pan4' or something like that. maybe you can get some knowledge from it.

[ned rush]

i'm building a vector synth with xy control over filter types and wave types.

http://www.youtube.com/watch?v=S6cS-F8Kjl4

this is how i did 4 way fades using xy.


<pre><code>
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-----------end_max5_patcher-----------
</code></pre>

[chapelier fou]

wow ! thanks a lot for sharing !
it works well ! i just changed the /100. by /127. and it fits with an lcd.
Need some adjustments to 'smooth' the result so when i am in the center the results are more than 0.25. (in the purpose of broadcasting a sound through 4 loudspeakers). Anyway, thanks again, i'll make some experiments starting with this basis !

[chapelier fou]

Korhan you should try this little mod :

<pre><code>
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-----------end_max5_patcher-----------
</code></pre>

[Korhan]

Thank you so much, Ned! It works like a charm! I love your Kaoss FX rack, too! (just saw it on YouTube)

Chapelier, thank you for sharing your mod, but I have my own UI.

Korhan
http://korhanerel.com

[Hielo Patagonia Sounds]

You should check the Node Max object. Part of the math is already done !

Hédi K.

[chapelier fou]

Hi Hédi K !

[Hielo Patagonia Sounds]

Nodes is a 2D parameter interpolation user interface. Check the Max-MSP examples included directly in the software, one of them is about mixing 4 audio sources with the Nodes object.

http://cycling74.com/docs/max5/refpages ... nodes.html

PS : Hi Chapelier Fou ! Nice to see you here also !

Hédi K.