BeepStreet has introduced DerVoco, a vintage vocoder emulation for iOS.
DerVoco uses analog modeled components including filters, envelope followers and companders to create a warm vintage sound.
Features:
- AUv3 Audio Effect and Audio Music Effect, works in all AUv3 compatible hosts.
- Internal polyphonic VCO may be used as a carrier and can be controlled via MIDI, when plugin is loaded as AU MFx.
- In special “input mode” carrier and modulator signals are mixed in left and right channels of stereo input signal. This way any synth plugin (e.g. Zeeon) may be used as a carrier signal.
- 11 or 15 bands with onscreen equalizer.
- Controllable filter resonance makes the sound smooth or sharp and ringing.
- Built in compressor and noise gate.
- Optimized: 60 filters take 4% CPU on latest iPads.
Here’s an unofficial video demo, via thesoundtestroom:
Pricing and Availability
DerVoco is available now for US $4.99. See the BeepStreet site for audio demos.
Gee – only 15 bands ?
I had a Novation KS which had a 40-band vocoder !
I`ll take 11/15 bands that sound good over 40 bands that sound mediocre
Have you seen analog vocoder with 40 bands?
Its not FFT, but tons of filters and envelope followers.. And it sounds different, yes mr. MK 
Those Audio Units are getting more and more interesting. For this one use a carrier app, make a subgroup in AUM and there you go, lots of different sounds possible.
Almost half-way to what my laptop could do for 15 years.
That’s called progress, stub. Hardware vocoders were replaced by software. Now software and hardware in a different form factor. iOS is going through a similar evolution that synths did in 80s to 90s, but at a more accelerated pace.