DMP'25 blog post for week 03 by Anvita Prasad (sugarlabs#246)

Author: AnvitaPrasad

src/constants/MarkdownFiles/posts/2025-06-22-dmp-25-AnvitaPrasad-week03.md

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+---
+title: "DMP '25 Week 03 Update by Anvita Prasad"
+excerpt: "Implementation of tuner visualization system and dual-mode interface"
+category: "DEVELOPER NEWS"
+date: "2025-06-22"
+slug: "2025-06-22-DMP-25-AnvitaPrasad-week03"
+author: "@/constants/MarkdownFiles/authors/anvita-prasad.md"
+tags: "dmp25,sugarlabs,week03,AnvitaPrasad"
+image: "assets/Images/c4gt_DMP.png"
+---
+
+<!-- markdownlint-disable -->
+
+# Week 03 Progress Report by Anvita Prasad
+
+**Project:** [Music Blocks - Improve Synth and Sample Features](https://github.com/sugarlabs/musicblocks/issues/4539)  
+**Mentors:** [Walter Bender](https://github.com/walterbender)  
+**Assisting Mentors:** [Devin Ulibarri](https://github.com/pikurasa)  
+**Reporting Period:** 2025-06-16 - 2025-06-22  
+
+---
+
+## Goals for This Week
+- **Goal 1:** Implement dual-mode tuner interface
+- **Goal 2:** Complete basic cents adjustment UI implementation
+- **Goal 3:** Enhance tuner visualization system
+- **Goal 4:** Test with various audio sources and instruments
+
+---
+
+## This Week's Achievements
+
+1. **Dual-Mode Tuner Implementation**
+   - Successfully implemented a toggle button interface for switching between two tuner modes
+   - Developed chromatic mode where target pitch moves based on input pitch
+   - Implemented logic for finding closest chromatic pitch within +/- 50 cents
+   - Added cent deviation value display under the tuner
+   - Started work on specific target pitch mode implementation
+   - Gathered feedback for further refinements
+
+2. **Cents Adjustment UI Development**
+   - Implemented basic cents adjustment interface
+
+3. **Tuner Visualization Enhancements**
+   - Made refinements to last week's visualization system
+   - Added clear visual feedback for cent deviation
+   - Enhanced visual clarity for pitch detection feedback
+
+4. **Testing Progress**
+   - Conducted initial testing with various audio sources
+   - Identified areas for improvement in pitch detection
+   - Created a test suite for tuner accuracy verification
+
+5. **Audio Processing Improvements**
+   - Implemented low-pass filtering to handle high-frequency noise
+   - Enhanced pitch detection accuracy using parabolic interpolation
+   - Optimized signal processing for better performance
+
+---
+
+## Challenges & How I Overcame Them
+
+- **Challenge:** Creating an intuitive UI for mode switching
+  **Solution:** Implemented a clear toggle interface with visual indicators for current mode
+
+- **Challenge:** Dealing with high-frequency noise in audio signal
+  **Solution:** Implemented low-pass filtering to improve signal quality and enhance pitch detection accuracy
+
+---
+
+## Key Learnings
+
+- Learned about signal processing techniques like low-pass filtering and its impact on audio quality
+- Gained insights into sub-cent accuracy through parabolic interpolation in pitch detection
+
+---
+
+## Next Week's Roadmap
+
+- Complete and refine target pitch mode implementation
+- Implement manual cent adjustment functionality
+- Finalize design for cent adjustment interface
+- Conduct comprehensive testing with various audio sources and instruments
+- Deliverable: Fully functional tuner with cents adjustment
+
+---
+
+## Resources & References
+
+- [Web Audio API Documentation](https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API)
+- [Audio Filters Guide](https://blog.native-instruments.com/audio-filters-guide/)
+
+---
+
+## Acknowledgments
+
+Thank you to my mentors, the Sugar Labs community, and fellow contributors for ongoing support. 
+
+---