SynthstromAudible/DelugeFirmware
Oct 2024 – Oct 2025
12 Months active
Languages Used
C++CMarkdownAssemblylinker scriptCMake
Technical Skills
Audio EffectsC++DSPEmbedded SystemsAudio DSPC
Mark Adams
PROFILE
Mark Adams
Mark Adams contributed to the SynthstromAudible/DelugeFirmware project, delivering a steady stream of audio engine enhancements, memory optimizations, and UI stability improvements over twelve months. He engineered features such as stereo audio effects, real-time scheduler refactors, and robust modulation handling, using C++ and ARM NEON to optimize performance on embedded hardware. Mark addressed complex issues in memory management and task scheduling, refactored core DSP routines, and improved reliability through targeted bug fixes and safer code organization. His work demonstrated depth in low-level programming, audio DSP, and firmware development, resulting in a more stable, responsive, and maintainable codebase for end users.
Overall Statistics
Feature vs Bugs
51%Features
Repository Contributions
87Total
Bugs
21
Commits
87
Features
22
Lines of code
9,754
Activity Months12
Your Network
29 people
Work History
October 2025
6 Commits • 2 Features
Oct 1, 2025October 2025 performance review for SynthstromAudible/DelugeFirmware: Delivered targeted improvements to the audio pipeline and UI stability, focusing on responsiveness, reliability, and safer memory management. Strengthened audio task scheduling and note handling, while hardening UI and editor components against common crashes.
6 Commits • 2 Features
Oct 1, 2025October 2025 performance review for SynthstromAudible/DelugeFirmware: Delivered targeted improvements to the audio pipeline and UI stability, focusing on responsiveness, reliability, and safer memory management. Strengthened audio task scheduling and note handling, while hardening UI and editor components against common crashes.
October 2025
September 2025
2 Commits
Sep 1, 20252025-09 monthly summary for SynthstromAudible/DelugeFirmware focused on stabilizing firmware after compatibility regressions from the Argon upgrade and std::span changes. Delivered stability enhancements by rolling back incompatible library changes to restore known-good behavior, preventing user-facing issues and ensuring consistent operation across devices. No new features released this month; the primary value came from improved reliability and a clean baseline for upcoming work.
September 2025
2 Commits
Sep 1, 20252025-09 monthly summary for SynthstromAudible/DelugeFirmware focused on stabilizing firmware after compatibility regressions from the Argon upgrade and std::span changes. Delivered stability enhancements by rolling back incompatible library changes to restore known-good behavior, preventing user-facing issues and ensuring consistent operation across devices. No new features released this month; the primary value came from improved reliability and a clean baseline for upcoming work.
August 2025
1 Commits
Aug 1, 20252025-08 monthly summary for SynthstromAudible/DelugeFirmware focused on reliability and safe cluster management. Key deliverable in this period: Restore SampleClusterArray to ensure safe, correct cluster management after a refactor that removed it in favor of std::vector. The fix reintroduces the original SampleClusterArray to address safety issues and ensure correct cluster handling. This work is captured by commit 119b26a5ca5662034ae0f88cc1d0b3faa07500e9 (Bugfix/restore sample cluster array (#4065)).
1 Commits
Aug 1, 20252025-08 monthly summary for SynthstromAudible/DelugeFirmware focused on reliability and safe cluster management. Key deliverable in this period: Restore SampleClusterArray to ensure safe, correct cluster management after a refactor that removed it in favor of std::vector. The fix reintroduces the original SampleClusterArray to address safety issues and ensure correct cluster handling. This work is captured by commit 119b26a5ca5662034ae0f88cc1d0b3faa07500e9 (Bugfix/restore sample cluster array (#4065)).
August 2025
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for SynthstromAudible/DelugeFirmware: Delivered two key improvements: Audio Scheduler Optimizations for Improved Responsiveness and Patch Cable Polarity Handling with UI Updates. Audio Scheduler Optimizations refine task timing, fill idle periods with audio processing, and enhance scheduler statistics to boost responsiveness and resource utilization. Patch Cable Polarity work fixes polarity handling for AFTERTOUCH, sets default polarity to unipolar, strengthens robustness for cables that ignore polarity settings, and updates the UI to reflect changes.
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for SynthstromAudible/DelugeFirmware: Delivered two key improvements: Audio Scheduler Optimizations for Improved Responsiveness and Patch Cable Polarity Handling with UI Updates. Audio Scheduler Optimizations refine task timing, fill idle periods with audio processing, and enhance scheduler statistics to boost responsiveness and resource utilization. Patch Cable Polarity work fixes polarity handling for AFTERTOUCH, sets default polarity to unipolar, strengthens robustness for cables that ignore polarity settings, and updates the UI to reflect changes.
June 2025
7 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for SynthstromAudible/DelugeFirmware: Focused on stabilizing core text handling, improving audio rendering reliability, expanding modulation capabilities, and maintaining code health through targeted refactors and backward-compatibility fixes.
7 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for SynthstromAudible/DelugeFirmware: Focused on stabilizing core text handling, improving audio rendering reliability, expanding modulation capabilities, and maintaining code health through targeted refactors and backward-compatibility fixes.
June 2025
April 2025
12 Commits • 1 Features
Apr 1, 2025April 2025: Delivered stability, performance, and reliability improvements for DelugeFirmware. Key work includes stereo rendering correctness, ArpNotes routing reliability, memory alignment and cluster management hardening with enhanced logging, ARM intrinsics-powered core engine optimization and broader initialization defaults, and comprehensive robustness fixes for crash handling and formatting. These changes improve live performance stability, reduce debugging time, and support faster, safer firmware updates.
April 2025
12 Commits • 1 Features
Apr 1, 2025April 2025: Delivered stability, performance, and reliability improvements for DelugeFirmware. Key work includes stereo rendering correctness, ArpNotes routing reliability, memory alignment and cluster management hardening with enhanced logging, ARM intrinsics-powered core engine optimization and broader initialization defaults, and comprehensive robustness fixes for crash handling and formatting. These changes improve live performance stability, reduce debugging time, and support faster, safer firmware updates.
March 2025
11 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for SynthstromAudible/DelugeFirmware: Focused feature delivery and reliability improvements across LFO, input handling, MIDI processing, and stability. WARBLER LFO enhancement expanded range/scale and GUI visibility. Fixed CV/instrument-switching handling to prevent overwriting and ensured consistent input delegation to the UI. Optimized MIDI behavior by ignoring MIDI during offline rendering and introducing tick-based interpolation for efficiency. Implemented extensive stability and memory-safety hardening (safe memory initialization, aligned buffers, OLED rendering stability, voice management, and session macro robustness) to reduce crashes and improve long-running reliability. Result: higher product stability, smoother offline rendering, and a cleaner codebase enabling faster future feature work.
11 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for SynthstromAudible/DelugeFirmware: Focused feature delivery and reliability improvements across LFO, input handling, MIDI processing, and stability. WARBLER LFO enhancement expanded range/scale and GUI visibility. Fixed CV/instrument-switching handling to prevent overwriting and ensured consistent input delegation to the UI. Optimized MIDI behavior by ignoring MIDI during offline rendering and introducing tick-based interpolation for efficiency. Implemented extensive stability and memory-safety hardening (safe memory initialization, aligned buffers, OLED rendering stability, voice management, and session macro robustness) to reduce crashes and improve long-running reliability. Result: higher product stability, smoother offline rendering, and a cleaner codebase enabling faster future feature work.
March 2025
February 2025
12 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for SynthstromAudible/DelugeFirmware. This period focused on strengthening memory management and memory layout to improve performance, stability, and memory headroom for future features. Core work delivered a series of memory-pool refinements and data-placement optimizations, alongside targeted bug fixes that stabilized startup, UI behavior, and code correctness. Key features delivered: - Memory management and memory layout optimization: Enhanced small-object allocators; per-object memory regions; refactored resizable array memory handling; leveraged the frunk region; and relocated sections to SDRAM/external memory via updated linker/script changes to reduce fragmentation and improve performance. Representative commits include: 1f82d072 Refactor/small obj allocator, 3be9a7d5 reduce allocation size changes for resizeable array, 80e522f3 Refactor/move things to external ram, 7fa4149c Move strings via section header flag, ab579db Use frunk better, 0157b834 move arm exception tables to sdram, 69d3fecf put stealable sample files in stealable region. Major bugs fixed: - Initialization order: moved layouts from BSS to data to fix startup initialization order (#3367). - UI and interaction: clear shortcut blinks when entering the sound editor to prevent double blinking (#3365). - Patch cable alignment: aligned mod knob array to stop patch cable bug (#3385). - Correctness and stability: fixed an override issue (#3358) and reverted a risky resizeable array optimization to preserve stability (#3343). Overall impact and accomplishments: - Greater startup reliability and UI stability, with improved performance characteristics and memory headroom for new features. - More deterministic behavior in real-time tasks due to improved memory placement and region management. - Reduced risk of fragmentation and memory-related regressions, enabling faster feature development and deployment. Technologies/skills demonstrated: - Embedded C/C++, memory allocators and memory-region design, linker/script customization, and SDRAM/external memory integration. - Data-driven initialization and memory layout optimization, refactoring for maintainability, and targeted debugging of complex memory issues. Business value: - Improved product reliability and performance, lower maintenance risk, and readiness for upcoming features that require tighter memory guarantees and stable UI/UX.
February 2025
12 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for SynthstromAudible/DelugeFirmware. This period focused on strengthening memory management and memory layout to improve performance, stability, and memory headroom for future features. Core work delivered a series of memory-pool refinements and data-placement optimizations, alongside targeted bug fixes that stabilized startup, UI behavior, and code correctness. Key features delivered: - Memory management and memory layout optimization: Enhanced small-object allocators; per-object memory regions; refactored resizable array memory handling; leveraged the frunk region; and relocated sections to SDRAM/external memory via updated linker/script changes to reduce fragmentation and improve performance. Representative commits include: 1f82d072 Refactor/small obj allocator, 3be9a7d5 reduce allocation size changes for resizeable array, 80e522f3 Refactor/move things to external ram, 7fa4149c Move strings via section header flag, ab579db Use frunk better, 0157b834 move arm exception tables to sdram, 69d3fecf put stealable sample files in stealable region. Major bugs fixed: - Initialization order: moved layouts from BSS to data to fix startup initialization order (#3367). - UI and interaction: clear shortcut blinks when entering the sound editor to prevent double blinking (#3365). - Patch cable alignment: aligned mod knob array to stop patch cable bug (#3385). - Correctness and stability: fixed an override issue (#3358) and reverted a risky resizeable array optimization to preserve stability (#3343). Overall impact and accomplishments: - Greater startup reliability and UI stability, with improved performance characteristics and memory headroom for new features. - More deterministic behavior in real-time tasks due to improved memory placement and region management. - Reduced risk of fragmentation and memory-related regressions, enabling faster feature development and deployment. Technologies/skills demonstrated: - Embedded C/C++, memory allocators and memory-region design, linker/script customization, and SDRAM/external memory integration. - Data-driven initialization and memory layout optimization, refactoring for maintainability, and targeted debugging of complex memory issues. Business value: - Improved product reliability and performance, lower maintenance risk, and readiness for upcoming features that require tighter memory guarantees and stable UI/UX.
January 2025
12 Commits • 4 Features
Jan 1, 2025January 2025 highlights for SynthstromAudible/DelugeFirmware: - Audio performance and reliability: Defers voice creation to smooth CPU usage, NEON-optimized voice rendering, improved audio recording order and envelope termination to deliver more stable audio output. - Memory management and efficiency: Strengthened memory alignment, optimized reallocation, and reduced memory churn during playback to improve stability and performance. - 7-segment display audio state indicator: Added a visual indicator to show the current audio clip type, providing immediate user feedback. - Internal maintenance and refactoring: Codebase cleanup and robustness improvements (string handling, ETL vector usage, resource checks) to enhance future extensibility. Impact and value: - Smoother real-time audio with fewer glitches under load, reducing support incidents and improving user satisfaction. - More stable playback on constrained hardware with lower memory churn and predictable performance. - Clearer UX for audio state, reducing user confusion and improving operability. Technologies/skills demonstrated: - C/C++ performance optimizations, including NEON acceleration. - Memory management techniques (alignment, allocation patterns, ETL usage). - Embedded UI enhancements for 7-segment displays. - Refactoring discipline and robust maintenance practices for long-term stability.
12 Commits • 4 Features
Jan 1, 2025January 2025 highlights for SynthstromAudible/DelugeFirmware: - Audio performance and reliability: Defers voice creation to smooth CPU usage, NEON-optimized voice rendering, improved audio recording order and envelope termination to deliver more stable audio output. - Memory management and efficiency: Strengthened memory alignment, optimized reallocation, and reduced memory churn during playback to improve stability and performance. - 7-segment display audio state indicator: Added a visual indicator to show the current audio clip type, providing immediate user feedback. - Internal maintenance and refactoring: Codebase cleanup and robustness improvements (string handling, ETL vector usage, resource checks) to enhance future extensibility. Impact and value: - Smoother real-time audio with fewer glitches under load, reducing support incidents and improving user satisfaction. - More stable playback on constrained hardware with lower memory churn and predictable performance. - Clearer UX for audio state, reducing user confusion and improving operability. Technologies/skills demonstrated: - C/C++ performance optimizations, including NEON acceleration. - Memory management techniques (alignment, allocation patterns, ETL usage). - Embedded UI enhancements for 7-segment displays. - Refactoring discipline and robust maintenance practices for long-term stability.
January 2025
December 2024
13 Commits • 5 Features
Dec 1, 2024December 2024 for SynthstromAudible/DelugeFirmware focused on stability, performance, and memory efficiency. Delivered key features: ModFX Types Handling Enhancement, DX Oscillator Enablement with Patch Setup, Task Scheduler Performance and API Refactor, Low-Level CPU Cache Optimizations, and Chord Data Model Optimization. Fixed major issues: grain buffer clearing that caused audio glitches; safe drum audition cancellation before rename; yield-based scheduling and cluster loading fixes to restore high-priority task responsiveness. Overall impact: more reliable live playback, faster startup, and lower memory footprint, with improved maintainability. Technologies demonstrated: real-time audio DSP, precomputation of scheduling, memory optimization (int8 chord storage), branch prediction and L2 cache enablement, and robust UI-safe interactions.
December 2024
13 Commits • 5 Features
Dec 1, 2024December 2024 for SynthstromAudible/DelugeFirmware focused on stability, performance, and memory efficiency. Delivered key features: ModFX Types Handling Enhancement, DX Oscillator Enablement with Patch Setup, Task Scheduler Performance and API Refactor, Low-Level CPU Cache Optimizations, and Chord Data Model Optimization. Fixed major issues: grain buffer clearing that caused audio glitches; safe drum audition cancellation before rename; yield-based scheduling and cluster loading fixes to restore high-priority task responsiveness. Overall impact: more reliable live playback, faster startup, and lower memory footprint, with improved maintainability. Technologies demonstrated: real-time audio DSP, precomputation of scheduling, memory optimization (int8 chord storage), branch prediction and L2 cache enablement, and robust UI-safe interactions.
November 2024
7 Commits • 3 Features
Nov 1, 20242024-11 monthly summary for SynthstromAudible/DelugeFirmware focusing on delivering significant audio enhancements, reliability improvements, and scheduling improvements. Highlights include stereo Warble rendering with parallel warbler processing, Dimension effect integration, a new Scheduler Time type for consistent timing, ModFX processing stability refactor, and UI/preset consistency fixes enabling more reliable operation and smoother user experiences.
7 Commits • 3 Features
Nov 1, 20242024-11 monthly summary for SynthstromAudible/DelugeFirmware focusing on delivering significant audio enhancements, reliability improvements, and scheduling improvements. Highlights include stereo Warble rendering with parallel warbler processing, Dimension effect integration, a new Scheduler Time type for consistent timing, ModFX processing stability refactor, and UI/preset consistency fixes enabling more reliable operation and smoother user experiences.
November 2024
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary: Focused on delivering enhancements to the Grain FX path in the DelugeFirmware, with measurable improvements in sonic expressivity and control. The changes emphasize performance stability and a clearer developer-facing interface, aligning with product goals to expand creative capabilities for users.
October 2024
1 Commits • 1 Features
Oct 1, 2024October 2024 monthly summary: Focused on delivering enhancements to the Grain FX path in the DelugeFirmware, with measurable improvements in sonic expressivity and control. The changes emphasize performance stability and a clearer developer-facing interface, aligning with product goals to expand creative capabilities for users.
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Quality Metrics
Correctness84.0%
Maintainability82.8%
Architecture78.4%
Performance78.4%
AI Usage21.0%
Skills & Technologies
Programming Languages
AssemblyCC++CMakeMarkdownlinker script
Technical Skills
API DesignARM ArchitectureARM NEONAudio DSPAudio EffectsAudio Effects ProcessingAudio ProcessingAudio ProgrammingAudio SynthesisBug FixingBuild SystemsCC++C++ DevelopmentC/C++
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