DocumentCode :
3417130
Title :
Signal masking in Gaussian channels
Author :
Quinn, John A. ; Williams, Christopher K I
Author_Institution :
Fac. of Comput. & I.T., Makerere Univ., Kampala
fYear :
2008
fDate :
March 31 2008-April 4 2008
Firstpage :
2989
Lastpage :
2992
Abstract :
We consider the problem of modifying the noise properties of a channel in order to make the source as indecipherable as possible given the output. Applications include jamming communications, maintaining confidentiality near spoken conversations and masking noise pollution. We present results as to how this can be done efficiently, assuming that we have a Gaussian channel and a constraint on the power of the noise. We go on to consider the case in which there is a positive signal which we want to remain coherent, as well as a negative signal which we wish to confound. We also discuss the application of the theory to acoustic signals, where we consider aspects of the human auditory system.
Keywords :
Gaussian channels; acoustic signal processing; hearing; noise pollution; Gaussian channel; acoustic signal; confidentiality maintainance; human auditory system; jamming communication; noise pollution masking; signal masking; Acoustic applications; Acoustic noise; Auditory system; Degradation; Gaussian channels; Gaussian noise; Humans; Jamming; Mutual information; Pollution; Acoustic signal processing; Gaussian channels; Signal masking;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference on
Conference_Location :
Las Vegas, NV
ISSN :
1520-6149
Print_ISBN :
978-1-4244-1483-3
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2008.4518278
Filename :
4518278
Link To Document :
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