An Experimental Study Of Phonetics Based On "Mongolian Mongolian Spoken Corpus"

Based on the corpus of Mongolian spoken Language in Mongolia,this paper analyzes the phonetic problems encountered in the corpus construction and explores the phonetic rules and characteristics of Mongolian spoken language flow in Mongolia by using the theories of experimental phonetics,phonology and acoustic analysis methods.In this paper,spontaneous dialogue is used as acoustic corpus and the experimental results are compared with those of reading aloud corpus.This paper consists of eight parts: introduction,summary,appendix and five chapters.The introduction part summarizes the previous research,introduces the basis of topic selection,research objectives,research significance,research methods,and the development of corpus labeling and parameter database.In the first chapter,acoustic experiments and parameter statistics are used to analyze the formants and phonemes of vowels in the Corpus of Mongolian spoken Language in Mongolia,and the acoustic characteristics of the initial and non-initial syllables,short vowel phonemes and diphthong phonemes are described.According to the formant parameters of vowels,the tongue position distribution of short vowels is more "centralized" and " Vowel Fronting" than that of long vowels.In terms of pitch length,the pitch length of short vowels with initial syllables is longer than that of short vowels with non-initial syllables,but the difference is not big.The length of the short vowel in the beginning position and the end position is similar,and the short vowel in the middle position is shorter.The number of syllables is inversely proportional to the length of the short vowel,that is,the more syllables there are,the shorter the length of the short vowel.In terms of diphthong length,the correlation between initial syllable,diphthong length and short vowel length is stronger.The correlation was weakened in non-initial syllables.Compared with previous experiments based on reading corpus,there were fewer vowels and shorter vowels in this experiment.The main reason lies in the stronger spontaneity and naturalness of corpus selection.In the second chapter,the resonance peaks and lengths of five diphthongs /(?)i/?/(?)i/?/(?)i/?/ui/?/ue/ in Mongolian spoken Language corpus of Mongolia are analyzed.Of the above five diphthongs,/ei/ has the highest slope value,and /ue/ has the lowest slope value.The slopes of F1 in the /(?)i/?/ui/?/ue/ are all less than 4.5Hz/msec.However,the average slope of F1 and F2 is greater than 4.5Hz/msec.The analysis of diphthong length combines the length of its short vowel.The correlation between diphthongs and their short vowels is stronger in initial syllables and lower in non-initial syllables.The third chapter analyzes the consonant problems encountered in the development of "Mongolian spoken Language corpus".The formant,pitch length and pitch intensity are analyzed and described in combination with the sound sample graph composed of silent GAP,horizontal bar,chaotic lines,vertical bar and GAP/VOT.Research with predecessors.Compared with previous research results,the following viewpoints are obtained:In the experiment,there were 21 consonant phonemes such as/n/ ?/m/ ? /(?)/ ?/(?)/ ?/j/ ?/w/?/r/ ?/p(?)/?/t(?)/ ?/k(?)/ ?/p/ ?/t/ ?/k/ ?/x/ ?/s/ ?/(?)/ ?/f/ ?/(?)/ ?/(?)/ ?/(?)/ ? /(?)/.This is less than the number of consonants found in previous studies.We describe the acoustic characteristics of the above consonants according to the performance of the language map and the quality of auditory sound.In articulation,the trill/r/is marked by allophone [r] when it shows the same features as fricative in the diagram;When consonants/(?)/appear after vowels,it is more likely that the aspirated link will be advanced: The four consonants,such as/(?)/?/(?)/?/(?)/?/(?)/ are pronounced as/(?)/ and/(?)/in words with/i /and long vowels.The consonant/(?)/is longer at the end of the word than at the head and in the middle.Chapter four sums up the phonology of vowels and consonants in the Corpus of Mongolian spoken Language.As follows:There are 8 short vowel phonemes of initial syllable such as/?/?/(?)/?/i/?/(?)/?/(?)/?/(?)/?/(?)/?/y/;The 5 short vowel phonemes of non-initial syllables include/(?)/?/e/?/i/?/(?)/?/(?)/;There are 9 long vowel phonemes of initial syllable such as/(?)/?/(?)/?/i/?/(?)/?/(?)/?/(?)/?/(?)/?/y/;The 8 short vowel phonemes of non-initial syllables include/(?)/?/(?)/?/e(?)/?/i(?)/?/(?)/?/(?)/?/o(?)/?/u(?)/;There are 5 diphthong phonemes,such as/(?)i/?/(?)i/?/(?)i/?/ui/?/ue/;There are 21 consonant phonemes such as/n/?/m/?/(?)/?/(?)/?/j/?/w/?/r/?/p(?)/?/t(?)/?/k(?)/?/p/?/t/?/k/?/x/?/s/?/(?)/?/f/?/(?)/?/(?)/?/(?)/?/(?)/.In the exploration of distinguishing features,six characteristics,such as vowel features,consonant features,nasal features,aspirated features,temporary features and lengthen features,are used to distinguish phonemic opposition.Chapter five analyzes the typical and frequent phonetic changes in the development of "Mongolian spoken Language Corpus" in Mongolia.The vowel changes can be divided into five categories: shortening of long vowels,the transition between long vowels and diphthongs vowels,the lengthening of vowels,several cases of syllable shedding,the formation of transition sound and vowel harmony.Consonant sound changes are divided into consonant shedding,half shedding of stops and affricate,common consonant variant and so on.The complex and varied sound changes in natural spoken language corpus are the main characteristics that distinguish it from reading language corpus This is mainly due to the fact that the pronunciation process of oral corpus is not constrained by supramolecular standards such as speed,prosody,pitch and intensity.The conclusion section summarizes the main conclusions and views of the paper.The appendix apart lists the Cyrillic transcribed text of the corpus used in this experiment;Sample of vowel formant parameter database in Mongolian Spoken Language Corpus of Mongolia;A sample of seven-layer annotation in “Praat” speech analysis software.