Expand the functionality of your Bullfrog synthesizer with this B&H Kit, which combines the Erica Synths High-Pass VCF Voicecard with the Electric Organ voicecard and the Wind and Stars Noise voicecard to add versatility to your synth setup.
Expand the functionality of your synth with the Erica Synths Highpass VCF Voicecard, an expansion card for the Bullfrog synthesizer that expands the sound treatment capabilities of the instrument by bringing a high-pass voltage-controlled filter into the mix, allowing for the exploration of high-pass and bandpass filtering under CV control.
The voice card features typical VCF controls including cutoff frequency, resonance, and CV level. The CV source switch allows for selecting between three CV sources (envelope generator 2, Sample & Hold, or LFO). The voice card features internal audio connections that pass the signal from the output of the mixer into the highpass VCF, which outputs to the low-pass VCF and VCA. For more flexibility, no CV connections for the Bullfrog are present on the voice card, so you have to do the patching yourself.
Expand the functionality of your synth with the Erica Synths Electric Organ Voicecard, an expansion card for the Bullfrog synthesizer that makes the internal connections emulate a pipe organ. It illustrates the principles of additive synthesis, where several waveforms are mixed together to generate more complex sounds.
The voicecard's pulse wave is sent though a divider, and all outputs of the divider are mixed together with the original signal and sent to the VCF and then to the VCA. The divider splits the original frequency by even numbers, resulting in a pitch with even octaves down from the original pitch. Each fader on the voicecard determine the amplitude of each suboctave.
Expand the functionality of your synth with the Erica Synths Wind and Stars Noise Voicecard, an expansion card for the Bullfrog synthesizer that automatically emulates randomly evolving wind sounds with blinking stars controlled by the divider. Toddlers fall asleep better when they hear sounds like these, but experimental ambient musicians will appreciate running these sounds through other modules like a VCF or VCA for interesting results.