Analysis of glottal signals for speaker information

This work analyzes the glottal signals recorded from different speakers for speaker information and describes some speaker specific cues. The glottal activity (GA) regions are detected by exploiting the strength of excitation and periodic nature of glottal signal. The identified GA regions are further processed to segment into nearly periodic smaller segments by detecting peaks in individual glottal cycles and using them as anchor points. The periodic segments are further divided into four smallest segments by considering the peaks and zero crossings. The speaker information present at the GA region, periodic segment and the four smallest segments are analyzed and illustrated. From the experimental studies the speaker information manifested at the four smallest segments show less intra speaker variability and more inter speaker variability. The four smallest segments of the periodic segments are therefore proposed as the speaker specific cues for the development of speaker recognition systems.