Joint time- and frequency-domain reshaping of room impulse responses
Joint time- and frequency-domain reshaping of room impulse responses
复制标题
房间脉冲响应的联合时域和频域整形
DOI：
10.1109/icassp.2015.7178066
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
A. Mertins
中科院分区：
文献类型：
--
作者：
J. Jungmann;Radoslaw Mazur;A. Mertins
在收听室补偿中，目的是补偿由于在封闭的房间中传输而呈现给音频信号的劣化。由于声波的多次反射，收听者接收到源信号的延迟和衰减版本的叠加。设计了一个滤波器，使得房间脉冲响应和均衡器的卷积包含比原始声道更好的声学特性。对于去混响，滤波器通常通过优化仅基于时域的成本函数来设计，并且因此可能引入频谱失真。最近的方法还考虑了整个系统的频域表示，并旨在产生平坦的整体频率响应。然而，在某些情况下，可能希望遵循预定义的频率响应，而不是获得平坦的频率响应。例如，听力受损的人可能更喜欢或甚至需要某些频率范围的放大。在这项工作中，我们提出了一种新的方法来共同塑造的时域和频域表示的整体声道根据规定的曲线。此外，我们将听觉尺度的概念集成到滤波器设计中。
In listening room compensation, the aim is to compensate for the degradations that are rendered to an audio signal by transmission in a closed room. Due to multiple reflections of the soundwaves, the listener receives a superposition of delayed and attenuated versions of the source signal. A filter is designed so that the convolution of the room impulse response and the equalizer contains better acoustic properties than the original acoustic channel. For dereverberation, the filter is usually designed by optimizing a solely time-domain based cost function and, therefore, may introduce spectral distortions. Recent methods also consider the frequency-domain representation of the overall system and aim at yielding a flat overall frequency response. However, in some cases, it may be desirable to follow a predefined frequency response rather than obtaining a flat one. Hearing impaired persons, for example, may prefer or even need an amplification of certain frequency ranges. In this work, we propose a new method to jointly shape the time- and the frequency-domain representations of the overall acoustic channel according to prescribed curves. Furthermore, we integrate the concept of auditory scales into the filter design.