Method for estimating tone
A technique of intonation and phonetics, applied in the field of evaluating intonation, to achieve the effect of clear physical meaning
Active Publication Date: 2011-08-10
IFLYTEK CO LTD
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[0010] In view of this, the main purpose of the present invention is to propose a method for automatic evaluation of intonation, in order to solve the problem of intonation evaluation in the existing computer-aided language teaching technology, the method can also be used for automatic evaluation of intonation in speech synthesis
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[0040]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0041] The basic idea of the present invention is: extract the fundamental frequency characteristic of speech, after aligning and regularizing, carry out pitch error and duration error statistics with standard tone, obtain sorting error vector, the quality of the intonation of the sentence described by sorting error vector, Sequence error vectors are used to account for varying sentence lengths, and finally the sequence error vectors are used to assess intonation.
[0042] Such as figure 1 as shown, figure 1 It is a flowchart of a method for assessing intonation provided by the present invention, and the method includes:
[0043] Step 101: extracting the fundamental frequency of the input voice to obtain a continuous f...
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The invention discloses a method for evaluating tone. The method comprises the following steps: extracting fundamental frequency of input voice to acquire a continuous fundamental frequency curve, aligning and cutting the input voice to acquire boundary between initial consonant and vowel and performing regularized processing on pitch and time length to acquire a regularized pitch curve and a regularized time length curve, comparing the regularized pitch curve and the regularized time length curve with a regularized pitch curve and a regularized time length curve of standard voice, calculating the error values of the pitch and the time length of the input voice relative to those of the standard voice, sorting the error values of the pitch and the time length respectively, extracting representative points to form a pitch sorting error vector and a time length sorting error vector, and evaluating the tone by using the pitch sorting error vector and the time length sorting error vector as characteristics. The method solves the problem of evaluating the tone in the conventional computer-assisted language learning technology.
Description
technical field [0001] The invention relates to the technical field of speech information processing and computer-aided teaching, in particular to a method for evaluating intonation. Background technique [0002] With the continuous development of speech technology, the application of computer-aided oral English teaching has quietly risen at home and abroad. Patent No. 200410074445 discloses a pronunciation assessment method based on speech recognition and speech analysis, and proposes a pronunciation assessment method for each syllable. However, this method does not describe the evaluation of intonation levels in Chinese. Patent No. 200510082059 proposed a matching framework for tone similarity, but did not describe the specific method in detail, especially the part involving how to match. The original patent description was vague and did not make a reasonable description of how to calculate the similarity . However, as mentioned in the patent, the fundamental frequency ...
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IPC IPC(8): G10L15/02G10L15/28G10L15/08G09B5/00G09B19/06
Inventor 柯登峰陈振标浦剑涛徐波
Owner IFLYTEK CO LTD