Pitch determination of noisy speech using wavelet transform in time and frequency domains

2002 ◽  
Author(s):  
Lunji Qiu ◽  
Soo-Ngee Koh ◽  
Haiyun Yang
Keyword(s):  
Wavelet Transform ◽  
Noisy Speech ◽  
Frequency Domains ◽  
Time And Frequency Domains

New Approach of Wavelet Fractal Analysis to Mechanical Fault Diagnosis

2001 ◽  
Author(s):  
Zhengjia He ◽  
Yanyang Zi ◽  
Peng Chen ◽  
Toshio Toyota
Keyword(s):  
Fractal Dimension ◽  
Wavelet Transform ◽  
Fault Diagnosis ◽  
Fractal Analysis ◽  
New Approach ◽  
Frequency Bands ◽  
Turbo Generator ◽  
Frequency Domains ◽  
Mechanical Faults ◽  
Time And Frequency Domains

Abstract Wavelet transform decomposes signals in both time and frequency domains. According to the principle of multi-resolution, irregularities or complexities of decomposed signals in various frequency bands are different, which can indicate mechanical fault. Fractal dimension of decomposed signal is an excellent factor to express the irregularity or complexity. It can make features of mechanical faults remarkable. Based on wavelet fractal dimension, successful diagnosis of looseness fault of bearing bridge for 50MW turbo-generator was obtained.

A Design of Comfortable Dental Treatment Sound Based on Chord-forming in Time and Frequency Domains

2015 ◽  
Vol 135 (12) ◽  
pp. 1565-1573
Author(s):  
Yoshitaka Ohshio ◽  
Daisuke Ikefuji ◽  
Yuko Suhara ◽  
Masato Nakayama ◽  
Takanobu Nishiura
Keyword(s):  
Dental Treatment ◽  
Frequency Domains ◽  
Time And Frequency Domains

Fuzzy Extreme Analysis in Time- and Frequency Domains

2011 ◽  
Vol 57 (4) ◽  
Author(s):  
Włodzimierz Pogribny ◽  
Marcin Drzycimski ◽  
Zdzisław Drzycimski
Keyword(s):  
Frequency Domains ◽  
Time And Frequency Domains

scholarly journals Characterizing patterns and variability of building electric load profiles in time and frequency domains

2021 ◽  
Vol 291 ◽  
pp. 116721
Author(s):  
Han Li ◽  
Zhe Wang ◽  
Tianzhen Hong ◽  
Andrew Parker ◽  
Monica Neukomm
Keyword(s):  
Electric Load ◽  
Frequency Domains ◽  
Time And Frequency Domains

Differences between apparent polarization resistance values obtained in the time and frequency domains

1995 ◽  
Vol 381 (1-2) ◽  
pp. 1-4 ◽  
Author(s):  
S. Feliu ◽  
J.C. Galvan ◽  
S. Feliu ◽  
J. Simancas ◽  
J.M. Bastidas ◽  
...  
Keyword(s):  
Polarization Resistance ◽  
Frequency Domains ◽  
Time And Frequency Domains
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