【摘要】 为了维护听障患者的身心健康，探究弱听患者在不同频率段存在的分贝值衰减的现象，从语音的发音原理出发，采用自相关函数法、倒谱法分别对语音信号进行基频、共振峰提取。通过语谱图探究基频曲线与共振峰的相关性，采用曲线函数拟合法对基频进行拟合，采用帧重叠相加法实现语音合成。进一步调整特征参数值实现语音重构，总结听障患者在不同频段的分贝值变化规律。结果表明，对于语音重构函数，在特定频率段内改变分贝值能够有针对性地提升听障患者的听力效果。更多还原

【Abstract】 In order to maintain the physical and mental health of hearing impaired patients, and explore the phenomenon of attenuation of decibel values in different frequency bands for patients with hearing impairment, starting from the pronunciation principle of speech, the autocorrelation function is used to extract the fundamental frequency of the speech signal, and the cepstrum is used to extract the formant of the speech signal. The correlation between the fundamental frequency curve and the formant is explored through the spectrogram. The fundamental frequency is fitted by the curve function fitting method, and the speech synthesis is realized by the frame overlap addition method. Further adjust the value of the feature parameters to realize speech reconstruction, and summarize the change rule of decibel value of hearing impaired patients in different frequency bands.The results show that for the reconstructed speech function, changing the decibel value in a specific frequency range can purposefully improve the hearing effect of hearing-impaired patients.更多还原