A Study on Pitch Period Detection Based on ALE for Sinusoidal Noise

A noise reduction system based on an adaptive line enhancer (ALE) and a noise estimation filter (NEF) has been proposed to reduce both wideband and sinusoidal noise in noisy speech. However, since the noise reduction system uses several adaptive filters, an increase in computation load is unavoidable. Then, the noise reduction system with less computation load has been also proposed. However, it needs a pitch detector of sinusoidal noise. In this paper, a pitch period detection using the tap coefficients of an ALE is proposed. The proposed method can detect the pitch period of sinusoidal noise superposed on speech