【摘 要】
：
在三间具有不同混响时间的小学教室采用近似人声指向性扬声器重放汉语测试词组和语谱噪声,分别由小学三、六年级学生回忆并记录他们所听到的测试词组句表,获取他们在不同混响
【机 构】
：
华南理工大学,物理与光电学院,广东广州510640
论文部分内容阅读
在三间具有不同混响时间的小学教室采用近似人声指向性扬声器重放汉语测试词组和语谱噪声,分别由小学三、六年级学生回忆并记录他们所听到的测试词组句表,获取他们在不同混响时间、不同信噪比条件下的词组得分.结果表明:噪声和混响对儿童在教室内的词组的记忆行为有显著影响,信噪比越高,儿童词组记忆得分越高;在被测的三个教室中,教室混响时间为0.79s时,儿童词组记忆得分最高.词组的记忆得分随年龄增大而提高,儿童年龄越大,词组记忆得分越高.
其他文献
荧光碳量子点(CDs)是继富勒烯,碳纳米管及石墨烯后新近发展的、最热门的碳纳米材料之一.CDs具有优良的光学性质,如荧光稳定、抗漂白、荧光波长可调、激发光宽且连续、等,导电
A modified sol-gel method combined with high-temperature sintering has been developed to make large size Yb3+-doped silica glass rod (Φ3 ~ 18 mm) with high
CuSe and Cu3SbSe4 are two semiconductors with interesting electronic properties.To prepare useful samples, it is generally necessary to obtain precursor pow
采用溶胶-凝胶法制备了不同粒径的SiO2粒子,并通过添加聚丙烯酸(PAA)改进制备了分散性佳、结构可控的PAA/SiO2核-壳粒子,采用红外光谱法(IR)、透射电镜法(TEM)和X射线衍
Effective prediction of tidal storm surges is especially important for the operators of major ports,since much of their infrastructure is necessarily located cl
Volatile organic compounds (VOCs) are common air pollutants existing in various atmospheric environments because they are not only hazardous to human health
We developed a system using a discharge plasma under water for inactivating bacteria in hydroponic culture system,and evaluated the performance of the devel
Amine functional group polymer is synthesized using dielectric barrier discharge (DBD) plasma assisted chemical vapor deposition with allylamine as monomer.
This paper describes the computations of hypersonic shock wave structure in a gas in rotational non-equilibrium using a newly developed simplified set of Burnet
本实验建立了全自动英蓝前处理技术分析电厂含硼酸水中痕量阴离子的方法.色谱条件:MetrosepA Supp5-250/4.0mm阴离子交换色谱柱,淋洗液:3.2mmol·L-1Na2CO3+1.0mmol·L-1NaHC