well I had some serious fun today
I had a play with some FET's today and I don't really know much about them, but through messing around I found this great way to volume fade / crossfade / pan. I was amazed at the simplicity of this, and it makes me feel like I have done something disgustingly wrong, or something that an engineer would spit on
You might know all this already but:
The FET's go down to perfect silence as far as I can tell, 10k seems like a good pot to use for mixing as I tried a 1k and everything was a lot quieter (thought the fade was very smooth) and a 100k pot cut signals in too hard. It makes a good volume fader if you just omit signal B and its FET from the diagram, and I'm sure it would be easy to implement it as a mono to stereo pan if you wanted (maybe with a 10k resistor between the signal input and the 2n3819). I'm not sure if the 10k resistors are needed before the output but I put them in just to be safe.
now I had some real fun today, I don't know if you have tried this but if you use small signal diodes to mix oscillators from something like a cmos 40106 then you get a cool unison effect between them, and this can be really interesting if you use oscillators running at super low or high frequencies - I was using the diodes after the 2n3819 pair to mix oscillators in and out (doesn't work if you place them before), it sounds freakin amazing! the unison effect creeps in really gently. I have basically sat mesmerised for quite some time this afternoon just fading between 2 oscillators
I have only tried this mixing with CMOS oscillators so far, but I presume it will work with other stuff as well, give it a go and I'll let you know if I find anything else if you like!
Aidan