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This paper presents a preliminary analysis of differences of formants among Shanghai, Guangzhou, Chongqing and Xiamen dialectal Putonghua (PTH) in China. An improved formant model based on the linear prediction (LP) feature analysis and a two-dimensional(2D) hidden Markov model (HMM) of formants is employed for estimation of the formant frequencies of vowels and diphthongs. The experiments show Guangzhou...
In our previous work, a speech/music classifier is proposed on the basis of the feature subset selection (FSS) tool and oblique decision tree induced by the algorithm OC1. In this paper, we endeavor to improve it by state transfer (ST) strategy whose aim is to refine the classification results, according to the fact that adjacent segments in one audio file have strong relevance to each other. The...
This article provides a brief introduction to speech accents and introduces a set of statistical signal processing methods for the modeling, analysis, synthesis, and morphing of English language accents. Accent morphing is the changing of the accent of a speech to a different accent, for example, from British to American.
In the problem of classification of audio signals, the requirements of low-complexity, high-accuracy and short delay are crucial for some practical scenarios. This paper proposes a method of real-time speech/music classification with a hierarchical oblique decision tree. A set of discrimination features in frequency domain are selected together with a proposed simple harmonic structure stability feature,...
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