Pitch Mean Based Frequency Warping

2006 ◽  
pp. 87-94 ◽  
Author(s):  
Jian Liu ◽  
Thomas Fang Zheng ◽  
Wenhu Wu
Keyword(s):  
Frequency Warping

Near-Perfect Reconstruction Oversampled Nonuniform Cosine-Modulated Filter Banks Based on Frequency Warping and Subband Merging

2012 ◽  
Vol 58 (2) ◽  
pp. 177-192 ◽  
Author(s):  
Marek Parfieniuk ◽  
Alexander Petrovsky
Keyword(s):  
Group Delay ◽  
Filter Banks ◽  
Main Idea ◽  
Perceptual Processing ◽  
Perfect Reconstruction ◽  
Frequency Warping ◽  
Small Loss ◽  
Novel Method ◽  
The One ◽  
Near Perfect Reconstruction

Near-Perfect Reconstruction Oversampled Nonuniform Cosine-Modulated Filter Banks Based on Frequency Warping and Subband MergingA novel method for designing near-perfect reconstruction oversampled nonuniform cosine-modulated filter banks is proposed, which combines frequency warping and subband merging, and thus offers more flexibility than known techniques. On the one hand, desirable frequency partitionings can be better approximated. On the other hand, at the price of only a small loss in partitioning accuracy, both warping strength and number of channels before merging can be adjusted so as to minimize the computational complexity of a system. In particular, the coefficient of the function behind warping can be constrained to be a negative integer power of two, so that multiplications related to allpass filtering can be replaced with more efficient binary shifts. The main idea is accompanied by some contributions to the theory of warped filter banks. Namely, group delay equalization is thoroughly investigated, and it is shown how to avoid significant aliasing by channel oversampling. Our research revolves around filter banks for perceptual processing of sound, which are required to approximate the psychoacoustic scales well and need not guarantee perfect reconstruction.

scholarly journals An Exemplar-Based Approach to Frequency Warping for Voice Conversion

2017 ◽  
Vol 25 (10) ◽  
pp. 1863-1876 ◽  
Author(s):  
Xiaohai Tian ◽  
Siu Wa Lee ◽  
Zhizheng Wu ◽  
Eng Siong Chng ◽  
Haizhou Li
Keyword(s):  
Voice Conversion ◽  
Frequency Warping

Frequency warping based on mapping formant parameters

2006 ◽  
Author(s):  
Zhi-Wei Shuang ◽  
Raimo Bakis ◽  
Slava Shechtman ◽  
Dan Chazan ◽  
Yong Qin
Keyword(s):  
Frequency Warping

A passive source ranging method based on the frequency warping transform of the vertical intensity flux in shallow water

2019 ◽  
Vol 28 (5) ◽  
pp. 054302
Author(s):  
Yu-Bo Qi ◽  
Shi-Hong Zhou ◽  
Meng-Xiao Yu ◽  
Shu-Yuan Du ◽  
Mei Sun ◽  
...  
Keyword(s):  
Shallow Water ◽  
Frequency Warping
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