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Article | 01-December-2015

DISCRETE S-TRANSFORM BASED SPEECH ENHANCEMENT

S-transform (ST) is an effective time-frequency representation method with the advantages of short-time Fourier transform and wavelet transform. This paper utilizes the advantages of the power spectral subtraction method and the speech enhancement method to presents a novel speech enhancement algorithm based on discrete ST. Firstly, the speech in time domain is transformed by ST to joint time-frequency domain for spectral subtraction so that the clear speech spectrum can be obtained and then

Guo-hua Hu, Rui Li, Liang Tao

International Journal on Smart Sensing and Intelligent Systems, Volume 8 , ISSUE 4, 2231–2246

research-article | 30-November-2020

Improving sand flow rate measurement using the wavelet transform and ultrasonic sensors

Transform (STFT) to analyse the signal from acoustic sensors. STFT is an extension of the Fourier Transform for non-stationary signals (those signals which change characteristics over time). STFT converts a signal from the time domain to the time-frequency domain. The Wavelet Transform is a superior method for analysing non-stationary signals and is used in various applications such as image processing, data compression, de-noising, etc. (Shukla, 2013). Similar to the STFT, this method uses the time

H. Seraj*, B. Evans, M. Sarmadivaleh

International Journal on Smart Sensing and Intelligent Systems, Volume 14 , ISSUE 1, 1–13

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