【摘要】 人工混响在许多领域(如现场音乐和计算机游戏)具有重要应用前景.传统的基于物理特性和感知特性的人工混响模拟方法分别具有计算量大和缺少房间具体特征等缺点.本论文提出了一种混合人工混响(hybrid physically-and perceptually-based reverberation,HPPR)模拟方法,首先利用基于物理特性的镜像法产生房间脉冲响应,通过与"干"信号进行卷积模拟产生早期混响;然后利用基于感知特性的反馈延时网络模拟产生后期混响.为了将模拟产生的早期混响和后期混响更好地结合起来,提出了一种早期混响能量衰减的参数化预测方法,据此实现反馈延时网络参数的估计,保证了早期混响到后期混响在时—频域的平滑过渡.数值实验和主观测听实验验证了所提混响模拟方法的有效性.更多还原

【Abstract】 Reverberation simulation in many areas including live music and computer games has important applications.Traditional physical and perceptual-based reverberation simulation techniques require a high computational cost and lack the specific characteristics of the room,respectively.This paper presents a hybrid artificial reverberation synthesis method(HPPR):the early reflections are generated by convolving with the impulse response modeled by the image source method(ISM) based on the physical characteristics;the late reverberation is produced by the feedback delay network(FDN) based on the perceptual characteristics.Furthermore,we pro-pose a method to estimate the energy decay relief(EDR) of the modeled early reflection and thus compute the parameters of the feedback delay network using the method.This process results in the smooth transition from the early reflections to the late reverberation in the time-frequency domain.Numerical simulation and subjective hearing experiments confirm the effectiveness of the proposed method.更多还原