Original practice card
Use one fixed example for a fair comparison.
Room test: The paper lantern rests beside the doorway. Pause, then repeat at the second position using the same input settings. File A = original position; file B = changed position; write the time and observable difference.
How should the first pass work?
Read the original example and limits, then work through the six steps using your own notes and any equipment required by the task. Keep a baseline or current version and check the stated result before marking a step complete. The checklist records your progress locally; it does not inspect files, judge audio, or perform the task for you.