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多周期PRBS信号在测量房间声回授通道特性中的应用
The application of periods pseudo random binary signals for room’s acoustic echo channel characteristic measurement
【摘要】 比较了采用MATLAB中randn函数产生的高斯白噪声,单周期PRBS信号以及多周期PRBS信号分别作输入信号时,相关法辨识房间声回授通道的效果.选用辨识效果较好的多周期PRBS信号作为输入信号,辨识实际房间的声回授通道特性,并研究影响房间声回授通道特性的因素.
【Abstract】 We compared the measure results when using white noise which is produced by MATLAB randn function,one period PRBS,multiple periods PRBS as Correlation Methods input signal.Choose the signal which has better result to distinguish real acoustic echo channel characteristic and find the factors which affect it.
【关键词】 声回授通道特性;
相关法;
PRBS信号;
【Key words】 acoustic echo channel characteristic; Correlation Methods; Pseudo Random Binary Signals;
【Key words】 acoustic echo channel characteristic; Correlation Methods; Pseudo Random Binary Signals;
【基金】 国家自然科学基金(60472096)
- 【文献出处】 四川大学学报(自然科学版) ,Journal of Sichuan University(Natural Science Edition) , 编辑部邮箱 ,2007年03期
- 【分类号】TN912.3
- 【被引频次】1
- 【下载频次】55