Fixing A Dodgy Cheap Audio DAC

A cheap HDMI-to-VGA converter with onboard audio wasn't working due to its delta-sigma DAC's switching frequency leaking into the output — a sign the output filter was failing. The investigation led to an in-depth exploration of filter design and the role of impedance in filter behavior, ultimately resulting in a custom replacement filter to fix the device.

Nguồn: https://hackaday.com/2026/07/09/fixing-a-dodgy-cheap-audio-dac. 8sync News chỉ tóm tắt và dẫn link; bản quyền nội dung thuộc tác giả và nguồn gốc.