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1. 发明授权

US6091824A Reduced-memory early reflection and reverberation simulator and method 失效
标题翻译：减少记忆早期反射和混响模拟器和方法
公开(公告)号：US6091824A
公开(公告)日：2000-07-18
申请号：US938813
申请日：1997-09-26
申请人： Kun Lin , James Martin Nohrden
发明人： Kun Lin , James Martin Nohrden
IPC分类号： G10H1/00 , G10K15/12 , H03G3/00
CPC分类号： G10K15/12 , G10H1/0091 , G10H2210/285 , G10H2250/115 , G10H2250/531 , G10H2250/611 , G10H2250/621
摘要： Early reflection and reverberation processing using a decimating filter simulates the high frequency attenuation of an actual physical and acoustical environment and advantageously reduces the memory storage and computational burden of the early reflection and reverberation processing method. A method of generating a reverberation effect in a sound signal includes decimating the sound signal in the sound signal path and forming an early reflection sound signal from the decimated sound signal. The early reflection sound signal has a reduced sample rate an attenuated high frequency components in comparison to the sound signal. The method further includes decimating the early reflection sound signal, recirculating the decimated early reflection sound signal in a plurality of iterations with a delay and a gain imposed between the iterations to form a reverberated sound signal, interpolating the early reflection sound signal and the reverberated sound signal, and accumulating the reverberated sound signal, the early reflection sound signal, and the sound signal to form a reflection and reverberation-enhanced sound signal. An audio signal processor processes a sound signal supplied to a sound signal path. The audio signal processor includes an early reflection processor connected to the sound signal path to receive the sound signal and simulate an early reflection signal, a reverberator connected to the early reflection processor to receive the early reflection signal and simulate a reverberation signal, and a summer connected to the sound signal path, the early reflection processor, and the reverberator. The early reflection processor and reverberator include a decimator for decimating the incoming signal.
摘要翻译：使用抽取滤波器的早期反射和混响处理模拟实际物理和声学环境的高频衰减，有利地降低了早期反射和混响处理方法的存储器存储和计算负担。在声音信号中产生混响效果的方法包括对声音信号路径中的声音信号进行抽取，并从抽取的声音信号形成早期的反射声音信号。与声音信号相比，早期反射声音信号具有降低的采样率，衰减的高频分量。该方法还包括对早期反射声音信号进行抽取，将多次迭代中的抽取的早期反射声音信号以延迟和施加在迭代之间的增益进行再循环以形成混响的声音信号，内插早期反射声音信号和混响声音信号，并累积混响的声音信号，早期反射声音信号和声音信号，以形成反射和混响增强的声音信号。音频信号处理器处理提供给声音信号路径的声音信号。音频信号处理器包括连接到声音信号路径以接收声音信号并模拟早期反射信号的早期反射处理器，连接到早期反射处理器以接收早期反射信号并模拟混响信号的混响器，以及夏季连接到声音信号路径，早期反射处理器和混响器。早期反射处理器和混响器包括用于抽取输入信号的抽取器。

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