Basavaraj Walikar1, Karthik Shamanna2, Devan P. P3, Vidya B. Vandal4
ABSTRACT: What distinguishes man from rest of animal kingdom is the ability to convey ideas, emotions and complex deductive logic by the human faculty referred to as speech, which is fundamentally dependent on tones produced by the human larynx and articulated into recognizable speech by the articulating apparatus. Therefore efficient functioning of this human speech apparatus is crucial for the functioning of humans. When this becomes faulty, efficient functioning is impeded and therefore remedial measures are to be taken.
A prospective case control study was done to study the voice pattern and its variation in different laryngeal pathology. This study involved analyzing the various parameters of speech in 40 patients suffering from laryngeal diseases, and comparing it with results obtained from analyzing speech in 40 normal adults who served as control.
In acute laryngitis, chronic laryngitis and vocal edema, Fo, F max, F min, Jitter and SNR were lower in subjects compared to control. In vocal cord palsy and vocal cord nodule Fo, F max, F min, SNR, shimmer and Jitter were higher in subjects compared to control. In vocal cord thickening Fo, F max, SNR, shimmer and Jitter were higher and F min was lower than control.
