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MAM | VF-11


The VF-11 is an 11-band analog vocoder from German company MAM (Music And More). A vocoder lets you create robotic vocal effects. You basically feed two sounds into it, the sound you want to process (Synthesis Input) such as a synth lead or synth pad, and the sound that will do the vocoding (Analysis Input) such as your voice or a drum loop.

The Analysis input has mono Mic and Line inputs. The signal you plug in here will be separated into 11-bands which cover a frequency range of 50Hz to 12kHz. The unique frequency spectrum of the analysis input sound will have different amplitudes at each of the 11 analysis bands. So a low frequency specific sound will generate lots of voltages in the low frequency bands, but very little to no voltages among the higher frequency analysis bands. The amount of voltages generated by these bands depends entirely on the harmonic content of the Analysis sound input.

Voltages generated by these analysis bands go on to control up to 11 Envelope Detectors on the Synthesis channel. The Synthesis channel is also split into 11-bands and each band passes through a VCA envelope controlled by these Envelope Detectors. The end result is that the Synthesis input's envelope is generated by the harmonic content of the Analysis input sound.

The VF-11 has its very own, albeit very simple, analog VCO to use on the Synthesis channel in lieu of external audio. This oscillator offers only a sawtooth waveform with a simple pitch adjustment knob. The VF-11 has only a mono output which can output the processed or unprocessed signals. The VF-11 can also function as a filterbank! Plug a sound to the Synthesis channel, and nothing into the Analysis channel. Then you can adjust the gain of each of the 11 bands. It isn't resonant, but it works. The VF-11 is analog and affordable. There's no MIDI or memory and you'd need two of these to process stereo audio. It's a good 'starter' vocoder but no replacement for the classic vocoders.

Engine TypeMisc
Voices (max)1
Engine Detailed1 VCO with sawtooth waveform and pitch adjust knob. 11-bands: 100, 225, 330, 470, 700, 1030, 1500, 2280, 3300, 4700, 9000 Hz
Filter (VCF)No resonant filter, but can be used as 11-band filterbank to cut/boost Synthesis channel bands
Envelope (VCA)1 on each band of Synthesis channel and controlled internally by Envelope Detectors
Key typeN/A
AudioMono Mic and Line inputs
Produced:2000 - 2000
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

Manuals, patches etc.


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