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Information acquisition method for English pronunciation
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A technology for information collection and speech, applied in speech analysis, speech recognition, instruments, etc., can solve the problems of incoherent speech, inaccurate recognition, and output distortion, and achieve the effect of speech smoothing
Inactive Publication Date: 2021-06-15
ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
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[0006] The object of the present invention is to provide a kind of information collection method that is used for English speech, to solve the essential difference between the speaker and the standard speech signal mentioned in the background technology Inaccurate recognition, incoherent voice, output distortion, etc.
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[0039] like Figure 4 As shown, a kind of information collection method for English voice is also provided, and the concrete steps of described information collection method are as follows:
[0040] S1, collecting audio signals and amplifying them;
[0041] S2, performing analog filtering on the amplified audio signal;
[0042] S3, converting the analog filtered signal into a digital signal and extracting audio characteristic parameters of the digital audio signal: attack time, spectral centroid, spectral flux, pitch frequency, sharpness, etc.;
[0043] S4. Match the above-mentioned audio feature parameters with the sound source model in the standard sound source database, then match the digital audio signal with the syllable and phoneme in the sound source model to obtain a matching degree, and perform phoneme correction according to the matching degree gap;
[0044] S5. Combining the corrected phonemes into the digital audio signal;
[0051] Such as figure 1 As shown, a specific embodiment provided by the present invention is an English pronunciation information collection system, including an audio collection device 1, a pre-filter module 2, an audio matching module 3, an audio synthesis module 4 and a post-filter output module 5;
[0052] The audio collection device 1 is used to collect audio signals and amplify them,
[0053] The pre-filter module 2 is used for analog filtering the amplified audio signal,
[0054] The audio matching module 3 converts the analog filtered signal into a digital signal and extracts audio features such as attack time, spectral centroid, spectral flux, pitch frequency, and sharpness of the digital audio signal, and compares the above audio features with the standard sound source The sound source model in the database is matched, and then the digital audio signal is matched with the syllable and phoneme in the sound source model to obtain the matching degree, and the phoneme i...
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technical field [0001] The invention relates to the technical field of audio information collection and processing, in particular to an information collection method for English speech. Background technique [0002] With the popularization of distance education, "online class" has played a very important role as a substitute and supplement for on-site courses, especially in English teaching, teachers usually hope to be able to give perfect pronunciation to complete classroom or training teaching , therefore, correcting pronunciation in real time through voice intelligence can solve the pain points of teachers. [0003] In the prior art, speech evaluation or correction is generally achieved by comparing the teaching speech with the standard speech and giving a score or beautifying the sound. For example, CN202010891349.4 discloses a method for generating adaptive English speech, collecting target speech signals; performing signal analysis and processing on the collected targ...
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