Treble is an advanced acoustic simulation and synthetic audio data platform designed for AI, audio R&D, and acoustic design professionals. Through its cloud-native Treble Web Application and Python-based Treble SDK, users can run high-fidelity wave-based and geometrical acoustic simulations, generate scalable synthetic audio datasets, and perform virtual prototyping of audio hardware and environments. The platform enables fast, accurate room acoustic design, audio system optimization, and automotive cabin acoustics tuning, while integrating seamlessly with existing 3D modelling workflows. With powerful visualization, auralization, and collaboration features, Treble significantly reduces time-to-results and helps teams build better audio experiences and AI models.