公开(公告)号：US20030169887A1

公开(公告)日：2003-09-11

申请号：US10383845

申请日：2003-03-07

申请人： Yamaha Corporation

发明人： Hiroaki Fujita ,  Kiyoto Kuroiwa ,  Kenichi Tamiya ,  Satoshi Sekine

IPC分类号： H03G003/00

CPC分类号： G10K15/12 ,  G10H1/0091 ,  G10H1/125 ,  G10H2210/281 ,  G10H2250/061 ,  G10H2250/145 ,  H04S1/002

摘要： A reverberation generating apparatus is designed for applying a reverberation effect to an acoustic signal for output based on sampling data representative of an impulse response waveform. In the apparatus, a first convolution operating section convolutes the acoustic signal with sampling data corresponding to an initial period of the impulse response waveform so as to generate an initial acoustic signal. The initial period of the impulse response waveform is determined from a point of impulse sound emission to a point after a lapse of a specified time. A second convolution operating section convolutes the acoustic signal with sampling data corresponding to a selected period of the impulse response waveform so as to generate an additional acoustic signal. An attenuation operating section recurrently outputs the additional acoustic signal while attenuating the additional acoustic signal so as to generate a late acoustic signal. An output section synthesizes the initial acoustic signal and the late acoustic signal for the output.

摘要翻译： 混响发生装置被设计成基于代表脉冲响应波形的采样数据将混响效应应用于声信号以输出。 在该设备中，第一卷积操作部分将声信号与对应于脉冲响应波形的初始周期的采样数据进行卷积，以产生初始声信号。 脉冲响应波形的初始周期从脉冲声发射点到经过指定时间之后的点确定。 第二卷积操作部分将声学信号与对应于脉冲响应波形的选定周期的采样数据进行卷积，以产生附加声学信号。 衰减操作部分循环地输出附加声学信号，同时衰减附加的声学信号，以便产生后期的声学信号。 输出部分合成输出的初始声信号和后期声信号。