Vocoder resources

Build an analog vocoder: a good start for the vocoder, but doesn’t have a low pass and high pass band
Implementation and Analysis of an Eight Band Analog Vocoder: resembles to first one, but with extra VU LEDs
Circuit calculations: to make the calculations for the R and C levels, but also has circuits for the low and high pass filters
Moog Spectravox: inspiration look, feel & sound
GRP Synthesizer vocoder V22: inspiration, functionality (looks very good, but ah, expensive!)
MFOS Power supply: good power supply specification
Bans pass filter calculations: nice information about calculation values for band pass filter
MFOS Vocoder: MFOS vocoder
NGF Vocoder: NGF Vocoder project
YuSynth filter bank: goede beschrijving hoe de dubbele band pass filter werkt. Bovendien ook betere high- and low pass filters (ook dubbel uitgevoerd) the supersaw effect
Okita vocoder discussion: some discussion about the Okita vocoder
Okita vocoder: description of the Okita vocoder
Frequency ranges: a nice page about the range of human voice and musical instruments
Note vs frequency calculations: calculates the note vs frequency
Active low-pass filter design: elaborate explanation of active low-pass filter design
MFOS Envelope follower
Envelope followers: a lot of envelope follower circuits at the Modwiggler forum
Voltage control modifications (from knob to CV)
Simple AD/AR using a TLC555
Wet/Dry mix circuits

Supersaw:

Saw tooth animator, voor het verkrijgen van een “super-saw” effect. Dit kan weer handig zijn als een soort van interne oscillator in de vocoder.
YuSynth Saw animator: description of a saw animator that can be used in conjunction with the one VCO to create
Barton Wave Animator: full description of the circuit for this Wave Animator.

OTA:

CEM3340/AS3340:

Electric Druid VCLFO-10

CEM3350/AS3350: