In this paper, the principle of speech aerodynamics is used, and the acoustic spectrogram and pronunciation airflow waveform are one-to-one corresponded by means of signal processing. The results show that from the airflow waveform, it can be clearly seen that the cooperative pronunciation influence mode between the plosives and vowels /a/ is cis assimilation. The plosives will not only affect the size of vowel airflow and airflow velocity, but also affect the trend of vowel formant. When the aspirated stop is pronounced, the greater the pressure under the glottis results in a longer duration and a higher average airflow velocity, which is about twice as long as the unaspirated stop and more than four times as fast as the unaspirated stop; The stability of the duration of the air flow of the aspirated stop is worse as the voice position is more and more backward, and the stability of the average air flow velocity of the aspirated stop is worse than that of the unaspirated stop.
This paper collects three singing methods of Hua'er 《 White peony Ling 》 and analyzes four acoustic parameters: duration, energy, fundamental frequency and long-term average spectrum.In terms of duration, the longest pronunciationduration of cry singing is mainly due to the long pause between its sections.From the perspective of energy distribution, the energy value of crying singing is greater than the other two, and the energy dispersion is also greater. Fromtheperspective of fundamental frequency distribution, the peak value of fundamental frequency from vast mountains singingmethod to crying singing method to cheerful singing method gradually changes to the low-frequency area, and fromthevalue of standard deviation, it is gradually changing. The dispersion of fundamental frequency of vast mountains singingmethod is large.From the long-term average spectrum, the change forms of LTAS curves of the three singing methodsare very similar, and the spectral envelope characteristics are similar. The average LTAS curve position of cheerful singing method is the lowest, and it is considered that there is a singer formant in Hua'er singing.
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