Reverberation is a well-known phenomenon in the field of room acoustics and reverberation time is an important parameter to be measured or estimated in acoustic design and audio signal processing. An improved algorithm for blind estimation of reverberation time based on maximum likelihood is presented in this paper, i.e., using the reverberant speech signal naturally uttered by the speaker to estimate reverberation time. Firstly, special rules for defining the optimal boundaries of the speech decay segments...
【基金】
国家自然科学基金项目(11504176);
江苏省“信息与通信工程”优势学科资助项目
【更新日期】
2016-09-19
【分类号】
TN912.3
【正文快照】
1引言混响效应是室内声学的一个重要现象,它是由声音在封闭空间中经多次反射而产生。描述混响效应强弱的一个重要参数是混响时间(Reverberationtime,RT)[1-3],其定义为当声源停止发声后,残余的声能在室内往复反射,经反射面吸收而强度逐渐减弱,声能密度衰减60 d B所需要的时间,?