Sunday, May 26, 2013

vocoder continued

Well this is turning to be a marathon pcb population. i've almost completed resistors and i've populated some other components outside the filters. After so long staring at resisters i think i have finally memorised resistor colour codes :)

And i reached a special milestone - i filled up fetta tin with resistor legs - i guess this was the project to do it

I have reworked my panel design also - this now includes a 20x20 ghielmetti patch matrix. 

Thursday, May 9, 2013

Vocoder Begins

Monday, April 1, 2013

jurgen haible living vocoder

this project is finally coming together

most parts are on their way and i have done a preliminary panel design

having a huge internal debate whether a patch matrix is necessary and i haven't included it in my current design. I have a thought of having it on the back of the case. as you can tell the design is still in flux.

i think i need to borrow a nord modular and test it out

here is the current panel design draft

im reasonably happy with it - i think ill adjust the signal flow space so it is a little tighter. with this panel design i'll need a bit of extra circuitry including 
  • speech input amp - line input
  • speech input amp - led bar graph 
  • excitation input - led bar graph
im also bringing almost every option onto the front panel except the patch matrix.... mmmm

the plan is to make a panel pcb - even if i end up etching one. i think i am coming around to the idea of panel pcbs and no wiring. it will take a lot of effort but hopefully it will make the unit easier to service and live longer. 

so waiting on parts and should begin once they arrive. i will build the unit and test some of the mods before builiding the panel. most likely i will get the front panel fabricated as part of the case. no idea how to get the decals on as it is way too big for my normal lasertran technique.