The sonic aesthetics of technical communication have been underconsidered compared to their visual and textual counterparts. We highlight the aesthetic overlaps and contrasts between human-produced audio technical communication and Generative AI audio that mimics the aesthetic patterns of successful science communication podcasts, specifically Radiolab , while exploring the sonic dimensions of ethos, relatability, trust, and narrative. Applying close listening analysis, we explore two particular sonic aesthetic features: prosodic variation and shared conversational syntax. We argue prosodic range and shared syntax contribute to the aesthetics of either overarching agreeableness/certainty or confrontation/uncertainty, which in turn constitutes an orientation to scientific knowledge.