Erica Synths Bullfrog Noise Voice Card creates internal connections in the Bullfrog to automatically emulate random wind and starburst sounds, controlled by a divider. Children fall asleep better to these nature sounds.
Voice cards extend the functionality of the Bullfrog synthesizer, making it even more versatile. Some replace patch cables by internally connecting Bullfrog "modules", others include built-in mixers, signal generators and advanced electronics to control the synthesizer. For example, the Sequencer sends CVs to adjust the pitch and gates to trigger events, and the Sampler