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Reseach Article

Two Stage Approaches for the Detection and Suppression of Typed Keystrokes in Speech Signals

by Rizwan Ullah, Renjie Tong, Yawar Ali Sheikh, Zhongfu Ye
Communications on Applied Electronics
Foundation of Computer Science (FCS), NY, USA
Volume 6 - Number 2
Year of Publication: 2016
Authors: Rizwan Ullah, Renjie Tong, Yawar Ali Sheikh, Zhongfu Ye
10.5120/cae2016652428

Rizwan Ullah, Renjie Tong, Yawar Ali Sheikh, Zhongfu Ye . Two Stage Approaches for the Detection and Suppression of Typed Keystrokes in Speech Signals. Communications on Applied Electronics. 6, 2 ( Nov 2016), 11-15. DOI=10.5120/cae2016652428

@article{ 10.5120/cae2016652428,
author = { Rizwan Ullah, Renjie Tong, Yawar Ali Sheikh, Zhongfu Ye },
title = { Two Stage Approaches for the Detection and Suppression of Typed Keystrokes in Speech Signals },
journal = { Communications on Applied Electronics },
issue_date = { Nov 2016 },
volume = { 6 },
number = { 2 },
month = { Nov },
year = { 2016 },
issn = { 2394-4714 },
pages = { 11-15 },
numpages = {9},
url = { https://www.caeaccess.org/archives/volume6/number2/674-2016652428/ },
doi = { 10.5120/cae2016652428 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2023-09-04T19:56:02.036370+05:30
%A Rizwan Ullah
%A Renjie Tong
%A Yawar Ali Sheikh
%A Zhongfu Ye
%T Two Stage Approaches for the Detection and Suppression of Typed Keystrokes in Speech Signals
%J Communications on Applied Electronics
%@ 2394-4714
%V 6
%N 2
%P 11-15
%D 2016
%I Foundation of Computer Science (FCS), NY, USA
Abstract

In recent decades, keystroke suppression has got a particular attention due to the increasing use of laptops and computers to capture audio in various communication scenarios such as meetings, audio/video instant messaging etc. In many of these situations, a unique problem of additive keystroke transient noise is faced. Because of the non-stationary, short time and abrupt nature of the keystroke transient, it has been a challenging task for many years. In this paper, two new two-stage approaches for the suppression of keystrokes are proposed. In the first stage the speech is estimated using supervised sparse non-negative factorization, which is common in both of the methods. Then, in the second stage, keystrokes are detected and are suppressed by replacing the corrupted speech frames with the corresponding estimated speech frames obtained in the first stage using two new techniques, which is the core contribution of this work. Experimental results show that the proposed approaches exhibit good performance without significantly degrading the quality of speech.

References
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Index Terms

Computer Science
Information Sciences

Keywords

Single channel speech enhancement short time Fourier transform supervised sparse non-negative matrix factorization correlation keystrokes suppression thresholding technique.