软件进阶培训--ArtemiS-ATP02.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,ArtemiS,之,ATP02,模块,ArtemiS Tool PackS,工具包,ArtemiS,之,ATP02,模块,ATP02,模块概述,:,该模块即心理声学模块，用于计算一些心理声学参数,。,Articulation Index vs.time,语言清晰度,vs.,时间,Tonality vs.time,音调,vs.,时间,loudness vs.time,响度,vs.,时间,specific loudness vs.time,特殊响度,vs.,时间,specific prominence ratio,显著度,specific prominence ratio vs.time,显著度,vs.,时间,roughness vs.time,粗糙度,vs.,时间,specific roughness,特殊粗糙度,specific roughness vs.time,特殊粗糙度,vs.,时间,sharpness vs.time,尖锐度,vs.,时间,fluctuation strength vs.time,抖动度,vs.,时间,specific fluctuation strength,特殊抖动度,specific fluctuation strength vs.time,特殊抖动度,vs.,时间,Speech Intelligibility Index vs.time,语言可懂度,ArtemiS,之,ATP02,模块,为了更好的理解计算各个参数的意义，我们来举例说明：,例子：汽车由,1000rpm,加速至,4800rpm,，在车内放置一个人工头，记录下整个加速过程中的噪声信号。,ArtemiS,之,ATP02,模块,Articulation Index vs.time,语言清晰度,vs.,时间,横坐标是时间轴，纵坐标为百分比。百分比的值越大，则语言清晰度越高。可以看出随着车速的增加，噪声越来越大，语言清晰度越来越低。,ArtemiS,之,ATP02,模块,4th order4,阶滤波,6th order6,阶滤波,时间记权,Manual,手动,Fast,快速,Slow,慢速,Impulse,脉冲式,时间常数,ArtemiS,之,ATP02,模块,Tonality vs.time,音调,vs.,时间,ArtemiS,之,ATP02,模块,时间重叠度,ArtemiS,之,ATP02,模块,loudness vs.time,响度,vs.,时间,横坐标是时间轴，纵坐标为响度级。可以看出随着车速的增加，车内响度级越来越大。,ArtemiS,之,ATP02,模块,加窗函数,响度的几种标准：,DIN,FFT/ISO 532B,Filter/ISO 532B,FFT/HEAD,采样点数,时间重叠度,选择自由场、扩散场,选择单位：方,/,宋,ArtemiS,之,ATP02,模块,specific loudness vs.time,特殊响度,vs.,时间,ArtemiS,之,ATP02,模块,选择频率单位：,Hz/Bark,ArtemiS,之,ATP02,模块,specific prominence ratio,显著度,ArtemiS,之,ATP02,模块,3rd Octave,Critical bands,时间重叠度,采样点数,分辨率,临界带宽,Geom.Extrapolation,ECMA-74 8th edition,ECMA-74 9th edition,ArtemiS,之,ATP02,模块,specific prominence ratio vs.time,显著度,vs.,时间,ArtemiS,之,ATP02,模块,roughness vs.time,粗糙度,vs.,时间,横坐标是时间轴，纵坐标为粗糙度。可以看出随着车速的增加，车内粗糙度越来越大。,ArtemiS,之,ATP02,模块,specific roughness,特殊粗糙度,ArtemiS,之,ATP02,模块,选择频率单位：,Hz/Bark,ArtemiS,之,ATP02,模块,specific roughness vs.time,特殊粗糙度,vs.,时间,ArtemiS,之,ATP02,模块,sharpness vs.time,尖锐度,vs.,时间,横坐标是时间轴，纵坐标为尖锐度。可以看出随着车速的增加，车内尖锐度越来越大。,ArtemiS,之,ATP02,模块,尖锐度的几种标准：,DIN,FFT/ISO 532B,Filter/ISO 532B,FFT/HEAD,尖锐度计算方法：,DIN,Aures,Von Bismarck,选择自由场、扩散场,加窗函数,采样点数,时间重叠度,ArtemiS,之,ATP02,模块,fluctuation strength vs.time,抖动度,vs.,时间,横坐标是时间轴，纵坐标为抖动度。,ArtemiS,之,ATP02,模块,选择分辨率,ArtemiS,之,ATP02,模块,specific fluctuation strength,特殊抖动度,ArtemiS,之,ATP02,模块,选择频率单位：,Hz/Bark,ArtemiS,之,ATP02,模块,specific fluctuation strength vs.time,特殊抖动度,vs.,时间,ArtemiS,之,ATP02,模块,Speech Intelligibility Index vs.time,语言可懂度,横坐标是时间轴，纵坐标为百分比。百分比的值越大，则可懂度越高。可以看出随着车速的增加，噪声越来越大，可懂度越来越低。,ArtemiS,之,ATP02,模块,几种计算方法：,Octave,3rd octave,Critical bands,Standard,标准,Idealized,理想状态,User-defined,自定义,Normal,Raised,Loud,Shout,时间记权,时间常数,