Worked on the simonsobs/sotodlib repository to enhance digital signal processing reliability by addressing a critical filter design issue. Focused on Python-based signal processing, the developer replaced the Butter4 bandwidth filter with a sine-squared filter for both band-pass and low-pass operations, directly improving filtering accuracy and reducing edge-case discrepancies in DSP pipelines. The update included comprehensive revisions to docstrings and usage examples, ensuring that future developers can implement the new filter correctly and efficiently. This work demonstrated depth in filter design and signal processing, contributing to more robust data processing workflows without introducing new features during the period.