文章基本信息

标题：Frequency Analisys of Speech Signals for Devanagari Script and Numerals Using FFT
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作者：Umesh Kumar Gupta ; Dr. R. K. Prasad
期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2013
卷号：3
期号：5
出版社：S.S. Mishra
摘要：This paper contains the frequency analysis of spoken Devnagari script and Numerals from the original speech signals. Devnagari vowels and numerals are playing the vital role in pronunciation of any word or counting. Each vowel & number is classified as starting, middle and end according to the duration of occurrences in the word. The Devnagari script having 12-vowels and 34-consonants are used in some Indian language like Hindi and 10 numerals (0-9) are used in mathematics. Sound samples from multiple speakers were utilized to extract different features. Initial processing of data, i.e., normalizing and time-slicing was done using a combination of Simulink and MATLAB. Afterwards, the same tools were used for calculation of Fourier descriptions and correlations. The correlation allowed comparison of the same words or numeral spoken by the same and different speakers. So the frequency has been calculated in statistical manner and generates a table between amplitude and frequencies. Mean and standard deviation such a system can be potentially utilized in implementation of a voice-driven help setup at call centres of commercial organizations operating in India and other foreign region. The implementation, experiments and result discussions are also existence
关键词：Spoken Hindi word & numerals; Fourier descriptors; Correlation; Mel Frequency Cepstral Coefficient ;(MFCC) and Feature extraction.