Erica Synths Highpass VCF, Electric Organ and Noise bundle

Erica Synths Highpass VCF, Electric Organ and Noise bundle is a 3-card set that expands the capabilities of the Bullfrog synthesizer.

Voice cards expand the functionality of the Bullfrog synthesizer, making it even more versatile. Some of them replace patch cables, internally connecting Bullfrog "modules", others contain built-in mixers, signal generators and advanced electronics to control the synthesizer. For example, the Sequencer sends CV for pitch control and a gate for triggering events, and the Sampler/Looper emulates the functionality of a reel-to-reel tape recorder.

The HIGHPASS VCF Voice Card expands the audio processing capabilities of the Bullfrog by adding a high-pass filter. This allows you to explore high and bandpass filtering. This card has the typical VCF knobs - CUTOFF (cutoff frequency), RESONANCE (resonance) and CV LEVEL (modulation depth). CV source switch allows you to select one of three modulation sources: Envelope Generator 2, Sample&Hold LFO (pulse generator in Sample&Hold "module"). Internal audio connections simplify patching.

Voice ELECTRIC ORGAN card creates internal connections in Bullfrog to emulate the sound of a pipe organ when playing notes with octave intervals simultaneously. It also illustrates the principles of ADDITIONAL SYNTHESIS, where different simpler waves are mixed to generate complex sounds. Internal connections simplify patching.