An Investigation On Sound Nasalance In Flow Of Speech Of Beijing Dialect

Mandarin Syllable is the basic unit, syllable composed by initial and final. In the continuous speech stream in the process of sound, pronunciation of each syllable rhyme will influence each other, connected syllable coarticulation effects generated, so that each phoneme pronunciation pronunciation changes in different conditions. Beijing dialect of the sonorants are nasality, sonorant nasal degree in speech flow will have different changes in the role of co-articulation, nasal-ending easily weakened、 fall off, vowel nasalization may have different performance.This paper adopts Nasometer of Beijing discourse stream nasal sonorant degree, were studied. The specific content of Chinese various phonological combinations in two word group, three groups of words, four character groups, with adjustable phrases, different accentual phrase and different speed of six cases, the conclusions are as follows:1.Various combinations of a language flow, nasal initials nose is greater than the degree of nasal coda nasal, nasal initial consonant/n/nose degree than nasal/m/nose degree, nose and tail consonants/-η/nose degree than before nasal coda/-n/nose degree, after the nose and tail/-η/right side through audio and/1/，/r/and the vowel of the impact must be greater. The performance of the law and the words sound the same. In various combinations, but the degree of value of specific nasal different, specific performance:①The two groups of words, word and word before nasal ending after nasal will merge into one longer pure nasal,/nn/combined nasal degree greater than/ηn/combined nasal degree. Voiceless onsets of fricative on nasal coda has the greatest effect, fricative after nasal coda are weakening. Different vowels, nasal caudal nasal degree also has difference, which, before high vowels after nasal coda nasal degree is the largest.②The three groups of words, through the phonetic:m/nv combination, nasal nasal degree ranking of1>3>2, m/nvN combination, nasal nasal degree ranking of3>2>1,1/rv combination, edge voice through consonant/1/nasal degree sort of3>2>1;/r/nasal degree ranking was1>3>2,1/rvN combination, the phonetic boundary through nasal degree ranking of3>2>1. Nasal:cvN, m/n/1/rvN combination, anterior nasal coda/-n/after rhinoplasty and tail/-η/nasal degree is3>1>2.③The four groups of words, through the phonetic:m/n/1/rv combination, through phonetic nasal degree ranking was1>3>4>2, m/nvN combination, nasal nasal degree ranking was3>2>4>1,1/rvN combination, edge through the phonetic nasal degree ranking was2>4>3>1. Nasal:cvN, m/n/vN combination, anterior nasal coda/-n/after rhinoplasty and tail/-η/nasal degree is3>1>2>4,1/rvN combination, anterior nasal coda/-n/after rhinoplasty and tail/-η/nasal degree4>1>3>2.2.Various combinations of the flow of language, a vowel either with the nasal, nose and tail, or combination of initials of streaming audio, the compound before the high vowel nasalization degree is the highest, compared with the inherent vowel nasal degree, the former highthe composite nasal degree of vowel, vowel by nasal coda/-η/affect the degree of nasal greater than the pre-nasal coda/-n/influence the degree of the nose. Language stream, has a change of the inner nose, or composite nasal vowel, specific performance is as follows:①The two groups of words, word sound after nasal degree less than before the word with the nose tail vowels nasal degree, vowels by nasal effects after nasal degree greater than the nasal consonant effects arising from the nasal degree, after the word sound and voiceless onsets combined nasal degree less than before the word tone nasal degree.②The three word group, cv portfolio, vowels nasal degree ranking of3>1>2, cvN, m/n/rvN portfolio portfolio, vowels nasal degree sorting3>2>1, m/nv combination, the nasal vowel degree sortingl>2>3,1/rv combination, the nasal vowel degree sorting2>3>1, lvn portfolio, vowels nasal degree ranking of2>1>3, lvη combination, vowels nasal degree ranking was3>1>2.③The four word group, m/n/l/rv combination, the nasal vowel degree sorting3>1>2>4, cvn portfolio, vowels nasal degree ranking of4>2>3>1, cvη combination, vowels nasal degree ranking was4>3>2>1, m/nvN combination, the nasal vowel degree sorting4>3>2>l,1/rvNcombination, the nasal vowel degree sorting4>2>3>l.3.①Tones of vowels in nasal degree with the single word appears in the results are basically consistent, Yin Ping tune where vowels nasal degree is the largest, the tone is the lowest. Nasal nose degree, Yangping tone nasal degree is the largest, the tone is the lowest.②The stress in the law is not especially neat, but stress on nasal degree still influential, in stressed syllables, because time is extended, pronunciation comparison in place, the degree of nasality nasal than nasality nasal high salinity stress. The same side approximant consonant and nose tail combination, stressed syllables in vowels than unstressed vowels in nasal degree.③The speech stream of vowels in the composite nasal degree language flow speed, speed faster, higher degree of compound nasal vowels; speed is slower, the vowel composite nasal degree closer to its intrinsic nasal degree, and nasal vowels nasal degree with the contrary, speed faster, nasality nasal degree is lower; speak more slowly, the higher degree of nasality nasal.In short, we see that the nose degree by the syllable how much different before and after, the auxiliary combination of tone, accent, speed, impact, vowels and nasal nose degrees have different performance.