Automatic Detection of Hum in Audio Signals

This article examines the automatic detection of low frequency additive sinusoidal disturbances in audio signals, usually termed hum. We present a method to automatically determine whether an audio signal contains hum or not, and, if necessary; to determine its parameters - e.g., the fundamental frequency and the number of harmonics. The developed algorithm does not require a priori information, and we show its good detection capabilities by an evaluation with artificial signals and real recordings.