
Matthieu contributed to the audacity/audacity and musescore/MuseScore repositories, focusing on audio processing, UI/UX improvements, and architectural refactoring. Over 11 months, Matthieu delivered features such as modularized spectral tools, per-track spectrogram settings, and automatic latency compensation, enhancing both user experience and maintainability. Using C++, QML, and CMake, Matthieu stabilized real-time audio workflows, improved cross-platform plugin handling, and refactored core components for clarity and extensibility. The work included parallelizing spectrogram computation, refining UI responsiveness, and decoupling legacy dependencies, resulting in more robust, testable code. Matthieu’s engineering demonstrated depth in asynchronous programming, modular design, and performance optimization.
April 2026 — MuseScore: Audio Resource Management Refactor: Replaced MusePlugin with NativeEffect to simplify audio resource handling and set groundwork for a plugin-free audio pipeline. Updated related mappings and logic to ensure consistency and clarity. Commit: 19c508db3dc88cd04a0916a1e7435bd1cb235cb0.
April 2026 — MuseScore: Audio Resource Management Refactor: Replaced MusePlugin with NativeEffect to simplify audio resource handling and set groundwork for a plugin-free audio pipeline. Updated related mappings and logic to ensure consistency and clarity. Commit: 19c508db3dc88cd04a0916a1e7435bd1cb235cb0.
March 2026 (audacity/audacity) delivered core spectrogram UX improvements, stability fixes, and dependency refinements that enhance reliability and editing efficiency for spectral workflows. The work emphasizes business value by reducing user-friction in spectral editing, improving rendering reliability, and simplifying maintenance through targeted refactors.
March 2026 (audacity/audacity) delivered core spectrogram UX improvements, stability fixes, and dependency refinements that enhance reliability and editing efficiency for spectral workflows. The work emphasizes business value by reducing user-friction in spectral editing, improving rendering reliability, and simplifying maintenance through targeted refactors.
February 2026 monthly summary for audacity/audacity: Delivered core features to improve recording quality and user experience, plus refactors to boost maintainability and future extensibility. Business value includes higher-quality recordings through automatic latency compensation with a unified terminology, an enhanced spectral selection UI for precise frequency adjustments, and modularization that enables faster future iterations.
February 2026 monthly summary for audacity/audacity: Delivered core features to improve recording quality and user experience, plus refactors to boost maintainability and future extensibility. Business value includes higher-quality recordings through automatic latency compensation with a unified terminology, an enhanced spectral selection UI for precise frequency adjustments, and modularization that enables faster future iterations.
January 2026 monthly summary for audacity/audacity focused on stabilizing spectral tools, expanding spectral analysis capabilities, and strengthening code quality and test coverage. Key work included stabilizing core spectral-visualization paths, adding perceptually-aware spectral selection, and improving spectrogram UX while tightening maintenance and test practices. Deliverables reduced user-reported issues, improved reliability, and laid groundwork for further spectral analysis features.
January 2026 monthly summary for audacity/audacity focused on stabilizing spectral tools, expanding spectral analysis capabilities, and strengthening code quality and test coverage. Key work included stabilizing core spectral-visualization paths, adding perceptually-aware spectral selection, and improving spectrogram UX while tightening maintenance and test practices. Deliverables reduced user-reported issues, improved reliability, and laid groundwork for further spectral analysis features.
December 2025: Delivered a major refactor and performance uplift for Audacity's spectral tools, significantly improving maintainability, user experience, and per-track analytics. The work focused on modularizing spectral components, enabling per-track spectrogram settings, and accelerating processing while stabilizing the UI across multiple views.
December 2025: Delivered a major refactor and performance uplift for Audacity's spectral tools, significantly improving maintainability, user experience, and per-track analytics. The work focused on modularizing spectral components, enabling per-track spectrogram settings, and accelerating processing while stabilizing the UI across multiple views.
November 2025 monthly summary for audacity/audacity highlighting key features, fixes, and technical achievements. Real-time track handling when opening a project was stabilized to prevent drifting state by correctly managing track IDs, ensuring real-time effects apply reliably on load. The meter UI responsiveness was enhanced by increasing the update rate from 30Hz to 60Hz, delivering smoother visual feedback during playback and editing. Spectrogram-related improvements include: (1) column width customization for global vs. track-specific settings, (2) real-time repaints when global or track settings change, and (3) a major spectrogram rendering architecture overhaul with refactoring of painter classes, task splitting, and alignment of per-track vs global configuration. These changes improve user experience, reliability, and maintainability, and lay groundwork for future spectral tooling enhancements.
November 2025 monthly summary for audacity/audacity highlighting key features, fixes, and technical achievements. Real-time track handling when opening a project was stabilized to prevent drifting state by correctly managing track IDs, ensuring real-time effects apply reliably on load. The meter UI responsiveness was enhanced by increasing the update rate from 30Hz to 60Hz, delivering smoother visual feedback during playback and editing. Spectrogram-related improvements include: (1) column width customization for global vs. track-specific settings, (2) real-time repaints when global or track settings change, and (3) a major spectrogram rendering architecture overhaul with refactoring of painter classes, task splitting, and alignment of per-track vs global configuration. These changes improve user experience, reliability, and maintainability, and lay groundwork for future spectral tooling enhancements.
Month: October 2025 (audacity/audacity). This month focused on delivering a key feature for long-running operations and stabilizing audio playback, delivering measurable improvements in user experience and reliability. Key features delivered include configurable titles for progress dialogs to provide context during long operations. Major bugs fixed include improvements to audio playback stability: jitter compensation in play cursor positioning, ensuring the playback cursor resets on resume, increasing the audio callback queue to reduce overflow risk with small buffers, and ensuring that playback does not consume more samples than have been output to prevent glitches. Overall impact: enhanced user experience during long tasks, improved playback reliability and predictability, and better resource utilization. Technologies demonstrated: C++, real-time audio processing, UI/UX improvements, debugging and performance tuning. This work lays groundwork for more robust long-running operation handling and more reliable audio playback across platforms.
Month: October 2025 (audacity/audacity). This month focused on delivering a key feature for long-running operations and stabilizing audio playback, delivering measurable improvements in user experience and reliability. Key features delivered include configurable titles for progress dialogs to provide context during long operations. Major bugs fixed include improvements to audio playback stability: jitter compensation in play cursor positioning, ensuring the playback cursor resets on resume, increasing the audio callback queue to reduce overflow risk with small buffers, and ensuring that playback does not consume more samples than have been output to prevent glitches. Overall impact: enhanced user experience during long tasks, improved playback reliability and predictability, and better resource utilization. Technologies demonstrated: C++, real-time audio processing, UI/UX improvements, debugging and performance tuning. This work lays groundwork for more robust long-running operation handling and more reliable audio playback across platforms.
2025-09 Monthly Summary for audacity/audacity focusing on business value, stability, and developer productivity.
2025-09 Monthly Summary for audacity/audacity focusing on business value, stability, and developer productivity.
Audacity – Monthly summary for 2025-08: Implemented a UI stability fix for RealtimeEffectViewerDialog to enforce a safe minimum width, preventing cross-screen VST3 UI animation issues. This change enhances UX consistency for users with multi-monitor setups and reduces distracting UI movements. The work improved reliability in cross-monitor scenarios and is documented with two commits for traceability.
Audacity – Monthly summary for 2025-08: Implemented a UI stability fix for RealtimeEffectViewerDialog to enforce a safe minimum width, preventing cross-screen VST3 UI animation issues. This change enhances UX consistency for users with multi-monitor setups and reduces distracting UI movements. The work improved reliability in cross-monitor scenarios and is documented with two commits for traceability.
May 2025 monthly summary focusing on key accomplishments, business value, and technical achievements across MuseScore and Audacity. This period delivered UI/UX and architecture enhancements, cross-platform plugin improvements, and code quality fixes that enable more robust plugin handling and better multi-display support.
May 2025 monthly summary focusing on key accomplishments, business value, and technical achievements across MuseScore and Audacity. This period delivered UI/UX and architecture enhancements, cross-platform plugin improvements, and code quality fixes that enable more robust plugin handling and better multi-display support.
April 2025 (audacity/audacity): UI/UX polish for realtime effects. Reused preset bar in RealtimeEffectViewerDialog to standardize layout and improve responsiveness; added panel info text with a tutorial link to clarify non-destructive effects. No major bugs fixed this month. Impact: clearer onboarding, more consistent realtime effects workflow, and a solid foundation for future UI improvements. Skills demonstrated: UI/UX design, code refactor in the UI layer, collaboration via focused commits.
April 2025 (audacity/audacity): UI/UX polish for realtime effects. Reused preset bar in RealtimeEffectViewerDialog to standardize layout and improve responsiveness; added panel info text with a tutorial link to clarify non-destructive effects. No major bugs fixed this month. Impact: clearer onboarding, more consistent realtime effects workflow, and a solid foundation for future UI improvements. Skills demonstrated: UI/UX design, code refactor in the UI layer, collaboration via focused commits.

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