Netflix TechBlog | Medium
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Measuring Dialogue Intelligibility for Netflix Content
Netflix prioritizes enhancing member experience by collaborating with technology partners to improve tools and workflows. This collaboration focuses on improving dialogue intelligibility throughout the production process, addressing issues from set to screen. A key initiative is the Dialogue Integrity Pipeline, which identifies and mitigates factors impacting clarity, such as noisy environments and audio mixing. Netflix uses industry-standard loudness meters and developed an eSTOI-based measurement system to analyze dialogue intelligibility. To improve pre-delivery optimization, Netflix partnered with Fraunhofer IDMT and Nugen Audio to create the DialogCheck plugin. This plugin, integrated into Digital Audio Workstations (DAWs), provides real-time feedback to sound engineers. The collaboration leverages Fraunhofer's machine learning-based speech intelligibility solution and Nugen Audio's expertise in audio plugins. The DialogCheck plugin allows for early detection and resolution of dialogue clarity issues, ensuring artistic intent isn't compromised. The ultimate goal is delivering immersive and accessible storytelling to all viewers, regardless of listening environment. This collaborative approach underscores Netflix's commitment to audio excellence and innovation in storytelling.