We develop next generation sound simulation and spatial audio technology for digital twins and virtual worlds. Revolutionizing how sound and acoustics are dealt with in product design, building design, VR/AR, video games and in the metaverse. 1- Treble SDK: Treble's SDK is the first cloud-based programmatic interface for acoustic simulation, utilizing finite element solvers to accurately capture complex wave phenomena at all frequencies and scales. The SDK enables next generation machine learning training, accelerated product design cycles, and it integrates seamlessly into custom R&D workflows and third-party tools. A paradigm shift in acoustic simulation: Treble's hybrid solver models the full audible spectrum, combining wave-based simulations for low-mid frequencies and geometrical acoustics for higher frequencies. Synthetic audio data generation in complex acoustic environments: Treble SDK enables the easy generation of high-quality acoustic training data, creating realistic acoustic scenes with complex materials, geometries, furnishings, directional sound sources, and microphone arrays. This enhances machine learning algorithms for applications such as speech enhancement, source localization, blind room estimation, echo cancellation, room adaptation, and generative AI audio. Independent research has shown that wave-based synthetic acoustic data significantly improves ML performance, making Treble SDK a powerful tool for AI-driven audio development. Machine learning model testing and validation: Treble SDK leverages high-fidelity simulations to evaluate audio ML algorithms, enabling near-real-time device-specific rendering in post-processing. Its Python-based programmatic interface allows seamless, automated performance evaluation across diverse acoustic scenarios. By replacing costly and time-consuming physical measurements with virtual prototyping, Treble SDK accelerates development while ensuring accurate and scalable testing. 2- Treble Web Application: The Treble Web Application delivers the next generation of acoustic simulation through its cutting-edge cloud-native platform. Combining speed, accuracy, and usability, Treble empowers architects, acoustic consultants, and engineers to design and optimize acoustic environments like never before. Operating the hybrid simulation engine: Treble's hybrid solver models the full audible spectrum, combining wave-based simulations for low-mid frequencies and geometrical acoustics for higher frequencies. With a single click, users can set transition frequencies or run solvers individually. Intuitive controls, like impulse response length or energy decay thresholds, eliminate the need for finite element modeling expertise. Optimization of small room for critical listening using Treble: The study demonstrates how Treble's simulations accurately capture room modes and boundary interactions, enabling precise planning and validation of loudspeaker placement and acoustic measures. By eliminating high measurement costs, the study highlights Treble's ability to position acoustic treatments with pinpoint accuracy, revolutionizing room acoustics design.

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