TY  - JOUR
AU  - Jamaludin, Mohd Redzuan 
AU  - Salleh, Sheikh Hussain Shaikh 
AU  - Swee, Tan Tian 
AU  - Ahmad, Kartini 
AU  - Ibrahim, Ahmad Kamarul Ariff 
AU  - Ismail, Kamarulafizam 
PY  - 2011
TI  - An Improved Time Domain Pitch Detection Algorithm for Pathological Voice
JF  - American Journal of Applied Sciences
VL  - 9
IS  - 1
DO  - 10.3844/ajassp.2012.93.102
UR  - https://thescipub.com/abstract/ajassp.2012.93.102
AB  - Problem statement: The present study proposes a new pitch detection algorithm which could potentially be used to detect pitch for disordered or pathological voices. One of the parameters required for dysphonia diagnosis is pitch and this prompted the development of a new and reliable pitch detection algorithm capable of accurately detect pitch in disordered voices. Approach: The proposed method applies a technique where the frame size of the half wave rectified autocorrelation is adjusted to a smaller frame after two potential pitch candidates are identified within the preliminary frame. Results: The method is compared to PRAAT’s standard autocorrelation and the result shows a significant improvement in detecting pitch for pathological voices. Conclusion: The proposed method is more reliable way to detect pitch, either in low or high pitched voice without adjusting the window size, fixing the pitch candidate search range and predefining threshold like most of the standard autocorrelation do.