Electrical engineering toolbox
Pitch / Hum Frequency Identifier
Electrical diagnostic helper (not a music tuner): autocorrelation fundamental of an audible hum plus 50/60/100/120 Hz associations. Worth investigating — never a confirmed cause. Phone mic, on-device only.
About this calculator
Electrical diagnostic helper (not a music tuner): autocorrelation fundamental of an audible hum plus 50/60/100/120 Hz associations. Worth investigating — never a confirmed cause. Phone mic, on-device only.
For design, installation, or safety decisions, verify assumptions against the applicable code edition, equipment documentation, and site requirements.
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