摘要
对室内声场来讲,传感器在感应到讲话者信号的同时,也会感应到室内的噪声信息,甚至扬声器重放的声音信号。因此,对听众来讲,就会使得演讲者的声音信号无论是清晰度还是可理解度都会受到或多或少的影响。给出一种基于传感器阵列的多媒体教室室内非相干噪声抑制方案,通过仿真,可以看出对噪声抑制的有效性,使室内声场更加稳定。
To room acoustic environment,the microphones catch not only the signal of talker,but also the noise,even the replayed signal.So there are effects on definition and intelligibility to the signal of talker more or less.A way of noise reduction is given based on microphone array.Simulation result shows that noise reduction is effective and makes room acoustic environment more steady.
出处
《电声技术》
2010年第12期75-77,共3页
Audio Engineering
基金
国家民委2008年科研项目(08QH07)
关键词
传声器阵列
信号处理
滤波
噪声抑制
microphone
array
signal processing
filter
noise reduction
