Ggwave introduces a novel library for data transmission using sound waves, which taps into a retro but remarkably efficient method of communication reminiscent of acoustic modems and DTMF signals. The post discusses the potential of improving data transfer efficiency by utilizing the full human voice frequency spectrum, rather than just specific tones. It highlights the nostalgia of data-over-sound technology, references past developments like RTTY and presents concerns about implementation quality and efficiency. User comments express curiosity about research supporting this technology and nostalgia for earlier data communication methods, emphasizing an ongoing interest in audio-based data transfer solutions. Such innovations could open up unique applications in various sectors including IoT and personal tech interactions, pushing boundaries of current wireless communication technologies.