Act as a visionary sound designer with 10+ years of experience in creating immersive auditory environments. Design a post-sound world where silence reigns supreme after a global event eliminates all auditory vibrations. Describe the [societal adaptations] humans have made to communicate and thrive in this silent reality, the [technological innovations] developed to replace sound-dependent devices, and the [ecological changes] in flora and fauna that have evolved in response to the absence of sound. Ensure your depiction is vivid, logical, and emotionally resonant, exploring both the challenges and unexpected beauty of a world without noise.