Fast implementation for non-linear time-scaling of stereo signals

Fast implementation for non-linear time-scaling of stereo signals
复制标题

快速实现立体声信号的非线性时间缩放

DOI:
--
复制
发表时间:
2005
期刊:
--
影响因子:
--
通讯作者:
J. Bello
J. Bello
中科院分区:
--
文献类型:
--
作者:
Emmanuel Ravelli;M. Sandler;J. Bello

文献摘要

被引文献

相似文献

在本文中,我们提出了一种改进的Duxbury的自适应相位声码器方法,用于音频时间拉伸,在瞬变时使用非线性时间缩放和时间掩蔽锁相[1]。我们指出,以前的算法有一些局限性,特别是它的实现速度慢,不能处理立体声信号。我们提出的解决方案包括:改进的瞬变检测,使用IFFT进行重新合成的更快的实现,以及无伪影地拉伸立体声信号的方法。最后,我们提供了一些图形化的结果和量化的度量来说明我们的改进。
In this paper we present an improved implementation of Duxbury’s adaptive phase-vocoder approach for audio time-stretching using non-linear time-scaling and temporal masked phase locking at transients [1]. We show that the previous algorithm has some limitations, notably its slow implementation and its incapacity to deal with stereo signals. We propose solutions to this problems including: an improved transient detection, a much faster implementation using the IFFT for re-synthesis and a method for stretching stereo signals without artifacts. Finally, we provide some graphical results and quantitative measures to illustrate our improvements.