华南理工大学学报（自然科学版）
華南理工大學學報（自然科學版）
화남리공대학학보（자연과학판）
JOURNAL OF SOUTH CHINA UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE EDITION)
2013年
12期
120-124
,共5页
虚拟听觉重放%传输函数%耳机%耳道%耳机均衡%最小相位近似
虛擬聽覺重放%傳輸函數%耳機%耳道%耳機均衡%最小相位近似
허의은각중방%전수함수%이궤%이도%이궤균형%최소상위근사
virtual auditory display%transfer function%headphone%ear canal%headphone equalization%minimum-phase approximation
为了简化虚拟听觉重放中耳机均衡的信号处理，对耳机到耳道传输函数（HpTF）的最小相位近似特性进行了分析和验证．首先，采用封闭耳道法对20名受试者、3款耳机的HpTF进行了重复测量；然后，采用相关性分析和心理声学实验分别从物理和听觉的角度研究了HpTF最小相位近似的合理性．分析结果表明，在0～12 kHz 的频率范围，测量HpTF和最小相位近似HpTF的平均相关系数达0．95，因此从物理上可以认为HpTF的最小相位近似是合理的．心理声学实验结果进一步表明，在0～12 kHz的频段中，HpTF的最小相位近似不会引起可感知的听觉变化．
為瞭簡化虛擬聽覺重放中耳機均衡的信號處理，對耳機到耳道傳輸函數（HpTF）的最小相位近似特性進行瞭分析和驗證．首先，採用封閉耳道法對20名受試者、3款耳機的HpTF進行瞭重複測量；然後，採用相關性分析和心理聲學實驗分彆從物理和聽覺的角度研究瞭HpTF最小相位近似的閤理性．分析結果錶明，在0～12 kHz 的頻率範圍，測量HpTF和最小相位近似HpTF的平均相關繫數達0．95，因此從物理上可以認為HpTF的最小相位近似是閤理的．心理聲學實驗結果進一步錶明，在0～12 kHz的頻段中，HpTF的最小相位近似不會引起可感知的聽覺變化．
위료간화허의은각중방중이궤균형적신호처리，대이궤도이도전수함수（HpTF）적최소상위근사특성진행료분석화험증．수선，채용봉폐이도법대20명수시자、3관이궤적HpTF진행료중복측량；연후，채용상관성분석화심리성학실험분별종물리화은각적각도연구료HpTF최소상위근사적합이성．분석결과표명，재0～12 kHz 적빈솔범위，측량HpTF화최소상위근사HpTF적평균상관계수체0．95，인차종물리상가이인위HpTF적최소상위근사시합리적．심리성학실험결과진일보표명，재0～12 kHz적빈단중，HpTF적최소상위근사불회인기가감지적은각변화．
In order to simplify the headphone equalization processing in headphone-presented virtual auditory re-plays,the minimum-phase approximation of headphone-to-ear canal transfer functions (HpTFs)was analyzed and evaluated.In the investigation,first,HpTFs for 20 human subjects and three types of headphones were repeatedly measured by using the blocked ear canal technique.Then,the reasonability of the minimum-phase approximation of HpTFs was discussed through correlation analysis and psychoacoustic experiment.Analytical results indicate that the mean correlation coefficient between the measured and the minimum-phase-approximated HpTFs is 0.95 in the frequency range from 0 to 12 kHz,which validates the reasonability of the minimum-phase approximation of HpTFs. Moreover,the results of psychoacoustic experiment further demonstrate that there is no audible difference between the measured and the minimum-phase-approximated HpTFs at the frequency below 12 kHz.
