
Bas Krahmer developed two core features for the Lightning-AI/torchmetrics repository, focusing on machine learning and audio processing workflows using Python and PyTorch. He designed a flexible classification metrics API by making the num_classes parameter optional, which streamlined micro-averaging and improved usability for end users. In a separate effort, he built a PESQ-based text-to-speech quality evaluation demo that generates speech with multiple speaker embeddings and enables perceptual quality comparison through an audio playback interface. His work included documentation enhancements, such as a Text-to-Speech Gallery, reflecting a thoughtful approach to API design, maintainability, and practical evaluation of speech synthesis quality.

June 2025 monthly summary: Delivered a PESQ-based TTS Quality Evaluation Demo in Lightning-AI/torchmetrics, demonstrating generation with multiple speaker embeddings and PESQ-based quality comparison against a target voice, with an audio playback UI for side-by-side assessment. Documentation updates added a Text-to-Speech Gallery (#2801) to improve discoverability and usage. This work strengthens TTS evaluation workflows, provides a concrete perceptual-quality example for stakeholders, and aligns with quality assurance and product storytelling.
June 2025 monthly summary: Delivered a PESQ-based TTS Quality Evaluation Demo in Lightning-AI/torchmetrics, demonstrating generation with multiple speaker embeddings and PESQ-based quality comparison against a target voice, with an audio playback UI for side-by-side assessment. Documentation updates added a Text-to-Speech Gallery (#2801) to improve discoverability and usage. This work strengthens TTS evaluation workflows, provides a concrete perceptual-quality example for stakeholders, and aligns with quality assurance and product storytelling.
January 2025 monthly summary for Lightning-AI/torchmetrics: Focused delivery of a robust, user-friendly classification metrics API with improvements to micro-averaging workflows. No major bugs fixed this month; emphasis on reliability, API ergonomics, and business value through cleaner usage and fewer configuration steps.
January 2025 monthly summary for Lightning-AI/torchmetrics: Focused delivery of a robust, user-friendly classification metrics API with improvements to micro-averaging workflows. No major bugs fixed this month; emphasis on reliability, API ergonomics, and business value through cleaner usage and fewer configuration steps.
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