论文标题
音频信号的响度越来越大：一种保持音频质量的感知动机的方法
Increasing loudness in audio signals: a perceptually motivated approach to preserve audio quality
论文作者
论文摘要
我们提出了一种维持音频信号体积的主观感知的方法，同时降低了它们的绝对峰值。我们专注于实现这一目标，而不会损害感知到的音频质量。例如，这是特别有用的，例如，最大程度地提高扬声器的感知繁殖水平，在这些扬声器中，由于已经受到限制的物理设计，因此仅扩大信号幅度并因此，其峰值受到限制。特别是，我们将基于听觉掩蔽的约束的绝对峰值最小化。这限制了原始信号和修改的信号之间的感知差异。此外，可以调整此约束，并允许控制所得的音频质量。我们显示了比较响度和音频质量与峰值降低的函数的结果。这些结果表明，与基于压缩和剪辑的经典方法相比，我们的方法在响度和音频质量之间提供了最佳的权衡。
We present a method to maintain the subjective perception of volume of audio signals and, at the same time, reduce their absolute peak value. We focus on achieving this without compromising the perceived audio quality. This is specially useful, for example, to maximize the perceived reproduction level of loudspeakers where simply amplifying the signal amplitude, and hence their peak value, is limited due to already constrained physical designs. In particular, we minimize the absolute peak value subject to a constraint based on auditory masking. This limits the perceptual difference between the original and the modified signals. Moreover, this constraint can be tuned and allows to control the resulting audio quality. We show results comparing loudness and audio quality as a function of peak reduction. These results suggest that our method presents the best trade-off between loudness and audio quality when compared against classical methods based on compression and clipping.
