Product Description
The EVOC20 package provides Logic users with 3 powerful tools for sound design: A classic polyphonic vocoder with built-in synthesizer, a formant filter bank, and a pitch tracking vocoder. Each plug-in provides maximum flexibility and features pristine 32-bit sound quality.
The VOice enCODER was developed in the first half of the last century for secure speech transmission. Instead of transmitting speech directly via telephone, speech was first analysed and then only the analysed signals transmitted. The receiver could not interpret these abstract signals unless he had the synthesis part of the vocoder, which converted the analysis signals back to synthesized speech. Pioneers of electronic music took this concept and turned the vocoder into what it is now — a tool for creative sound design. The principle remains the same: the sonic character of the analysis signal is extracted and transforms the signal at the vocoder's synthesis input. For this, multiple bandpass filters, envelope followers and voltage-controlled amplifiers were needed, making good analogue vocoders more expensive than the most advanced synthesizers. Luckily, the EVOC20 package now provides the sound quality of the finest analogue vocoders at a fraction of their cost, while adding innovative features unavailable on any analogue vocoder.
Features:
5 to 20 filter bands with adjustable resonance for changing the sonic character of the vocoder
Lowest and highest filter band switchable between bandpass or low/highpass mode
Formant positions can be controlled manually or via tempo-syncable LFO (7 waveforms)
Adjustable stereo panorama position of filter bands
Intuitive, ergonomic user interface
Polyphonic Synthesizer
The EVOC 20 PS combines a vocoder with a polyphonic synthesizer, playable in realtime. Each of its 16 voices features 2 oscillators with 50 special waveforms, FM capabilities and colored noise. This synthesis signal can be articulated by any input signal, giving you classic sounds like talking robots, singing strings, percussive choirs and more. Up to 20 filter bands can be used for the articulation process. The Unvoiced/Voiced Detector increases speech intelligibility. Adjust how fast the EVOC20 PS reacts to sound changes in the analysis signal, or capture the harmonic content of the analysis signal with the Freeze function. Formants can be spread, moved or modulated by the syncable LFO for subtle or extreme sonic transformations. Finally, the Ensemble effect provides that familiar warm, swirling sound.
Features
Analysis signal freely selectable
Synthesis signal is provided by a built-in 16-voice synthesizer, playable in realtime
Each synthesizer voice features 2 oscillators with 50 waveforms (switchable to FM synthesis operation) and an attack/release envelope generator
Separate mixable noise generator with adjustable noise color (from white to blue)
Separate lowpass filter with resonance for pre-shaping the synthesizer's signal
Syncable LFO (7 waveforms) for pitch modulation
Mono, poly, legato and unison modes
Glide (portamento) and Analog (adjustable random pitch detuning) function
Adjustable Attack and Release times control vocoder's reaction to spectral changes in analysis signal
Freeze function captures harmonic content of the analysis signal at any given time
Unvoiced/Voiced detector increases speech audibility by consonant/vowel detection
Switchable Ensemble effect circuit
Tracking Oscillator
The EVOC 20 TO architecture is similar to that of the EVOC020 PS: up to 20 filter bands, modulatable formants, controllable filter resonance for sharp or soft vocoder sounds, Freeze, adjustable reaction times and the U/V Detection circuit. But the EVOC 20 TO differs fundamentally from the polyphonic vocoder in its use of an audio track, or the monophonic pitch-tracking oscillator, for the synthesis signal. The pitch-tracking oscillator follows the pitch of the analysis signal with great accuracy. The oscillator's waveform can be switched between sawtooth and 2 oscillator FM. To provide you with interesting effects in conjunction with the input signal, pitch tracking can be limited to any musical scale. Ultra-surprising sounds result when polyphonic input signals or drums are used with the EVOC20 TO.
Features
Analysis signal freely selectable
Synthesis signal freely selectable between audio tracks and built-in pitch-tracking oscillator
The monophonic pitch-tracking oscillator follows the pitch of the analysis signal
Pitch-tracking can be quantized to musical scales
The scales are user-definable or can be chosen from factory presets including, amongst others, major and minor chords with adjustable root note
Strength of scale quantization can be adjusted
Glide can be applied to pitch quantization
Pitch-tracking oscillator produces sawtooth wave or 2 operator FM synthesis sounds
Adjustable Attack and Release times control vocoder's reaction to spectral changes in analysis signal
Freeze function captures harmonic content of the analysis signal at any given time
Unvoiced/Voiced detector increases speech audibility by consonant/vowel detection
Filter Bank
Lovers of analogue filter banks will be thrilled with this plug-in. The EVOC20 FB offers the core of every vocoder, with 2 distinct, fully adjustable filter banks (A/B). The input signal runs through both filter banks in parallel. Each provides up to 20 filter bands, which can be blended manually or via a syncable LFO. Each discrete filter band features independent level controls with the option to dampen frequencies up to 100%, enabling precise and drastic sound sculpting. Additional filter resonance, adjustable filter slopes, and optional distortion ensures an expansive range of tone colorings. A second LFO, syncable to song tempo, facilitates the modulation of formants through the movement of filter bands. Formant movements can also be manually achieved. As with the 2 vocoders, stereo spread can be precisely tuned, affording enhanced width to processed signals.
Features
2 filter banks, with 5 to 20 filter bands each
Each filter band's level can be individually adjusted from full level down to 100% silence
Levels for multiple filter bands can be conveniently drawn with the mouse in one pass
2 different slopes for all filter bands
Switchable overdrive mode
Boost (±20 dB) for each of the 2 filter banks
Both filter banks can be crossfaded manually or via tempo-syncable LFO (7 waveforms)
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