期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2012
卷号：2
期号：5
页码：103-110
出版社：International Journal of Soft Computing & Engineering
摘要：Speech synthesis is one of the interesting research areas now-a-days and it has been explored for various applications including man-machine interaction and telecommunications. Moreover, it can be significantly used as an aid for vocally and blindly handicapped persons, etc. Birds produce vocal calls for different meaningful purposes; for e.g. contact call is used for making a vocal coordination with the movement of flock members for the search of a particular type of vegetation, begging call is generally used by baby birds when they are hungry and thirsty, etc. Synthesis of vocal calls has many applications for e.g. synthesizing an alarm call may be used to protect the bird from any harmful situation, etc. LPC model has the ability to find out speech parameters for efficient speech synthesis. It has been used for speech coding applications because it has the property of low bit rate speech coding. Since the basic mechanism of vocal sound production mechanism in birds is almost similar to the human speech production mechanism in many aspects. LPC based synthesis may be used for the synthesis of the vocal calls of birds. In this paper, LPC based synthesis approach has been successfully used for the vocal calls of Alexandrine parakeet (Psittacula Eupatria) by estimating different speech parameters. The quality of synthesized speech output has been evaluated using visual analysis of spectrograms, subjective and objective assessment methods keeping in view different MOS and PESQ scores. In order to measure the quality of synthesized output, MOS and PESQ scores should be compared to identify the required quality level.
