DocumentCode :
616691
Title :
Cough sound discrimination in noisy environments using microphone array
Author :
Moradshahi, P. ; Chatrzarrin, Hanieh ; Goubran, Rafik
Author_Institution :
Dept. of Syst. & Comput. Eng., Univ., Ottawa, ON, Canada
fYear :
2013
fDate :
6-9 May 2013
Firstpage :
431
Lastpage :
434
Abstract :
Cough sound discriminator algorithms are capable of distinguishing between dry and wet cough types. The performance of such algorithms, however, is affected by noise and reverberation in the environment. The effect of reverberation on the performance of cough sound discriminators was previously studied in [1]. In this paper, the effect of noise on the performance of cough sound discriminator is studied and quantitatively measured using previously defined Linear Separation Score (LSS) [1]. Experiments revealed a significant decrease in the performance of cough sound discriminator in the presence of white noise using a single microphone for cough sound acquisition. A microphone array structure containing a maximum of 7 microphones along with delay-and-sum beamforming algorithm was used to improve the performance of the cough sound discriminator. Experimental results showed improvement in the performance of the cough sound discriminator in the presence of white noise using microphone arrays.
Keywords :
acoustic signal detection; array signal processing; diseases; medical signal processing; microphone arrays; pneumodynamics; signal classification; signal denoising; white noise; LSS; Linear Separation Score; algorithm performance; cough sound acquisition; cough sound discrimination; cough sound discriminator algorithm; cough sound discriminator performance; delay-and-sum beamforming algorithm; dry cough type; environmental noise effect; environmental reverberation effect; microphone array structure; noise effect quantitative measurement; noisy environment; performance improvement; single microphone; wet cough type; white noise presence; Array signal processing; Arrays; Microphones; Noise measurement; Reverberation; White noise; beamforming; cough sound discrimination; microphone array;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2013 IEEE International
Conference_Location :
Minneapolis, MN
ISSN :
1091-5281
Print_ISBN :
978-1-4673-4621-4
Type :
conf
DOI :
10.1109/I2MTC.2013.6555454
Filename :
6555454
Link To Document :
بازگشت