Build an analog vocoder

Step 2 Buy the components

Besides the condensers listed in the previous step, I used the following components. You may want to buy a little more than the quantities I list here just in case you damage some while working.

Condensers:
17 x 4.7u
2 x 10u
14 x 150n
14 x 0.1u

Variable resistors:
16 x 50K
1 ganged 50K

Small calibration pots:
14 x 50K
14 x 1K

Jacks:
27 mono phone jacks (because each channel is patchable)
1 stereo phone jack

Cable:
3 meters of 10 wire ribbon cable
30 male 10 wire ribbon cable connector
30 female 10 wire ribbon cable connector

A bunch of wire to make all the connections (I destroyed an Ethernet cable to get this copper cable, its great because it is color coded and all).

Resistors:
28 x 1.2K
28 x 2K
2 x 1K
123 x 10K
28 x 20K
56 x 33K
28 x 120K
28 x 100K
42 x 200K
28 x 220

Transistors:
42 NPN transistors (2n2222 or similar)

Op Amps:
30 TL074

LEDs:
15 RGB

Diodes: 42 signal diodes

Comments

[chirp-o-tron]

Why are only 27 mono jacks needed. (I was assuming two jacks per channel for R and L)

[kwon1001]

You don't have to put all these jacks, and just joint all Filter's Input with all Input Stage's output.

[planetone]

That is true... the jacks are incase you would like to invert, transpose, or sequence the spectrum.

[audiophile]

how much wattage do the resistors need to be able to handle? (i.e. do i buy 1/6 watt 1/2 watt....)