Record the noise your machine is making. Clank measures what is actually in the sound and gives you a short list of explanations with the evidence for and against each one.
A reasoning aid, not a diagnosis. Sound alone cannot confirm a fault. Clank tells you what it heard, how well each explanation fits, and what to check with your own hands. If something smells hot, sparks, or leaks, turn it off first.
Phone about arm’s length from the machine, no talking, 8–10 seconds. Noise suppression is turned off so the hum survives.
A voice memo or video from your phone works. m4a, mp3, wav, webm, mov.
Built signals with one known signature each — for trying the tool, not real recordings.
Optional. Answers are weighed with the sound and marked separately in the results.