Enlarged Adenoids is a disease which results in the blockage of air passage of infants. These babies who are infected with adenoids will produce high snoring sounds while they sleep. For children suffering from adenoid, it's a heart breaking scene for a parent to see their small innocent baby could sleep only in a sitting position. The sound of snore produced by such babies is too loud, that it can reach a person at several meters away from the baby. When there is a blockage of air passage due to flu, the snore sound of baby will go high. The adenoid snore sound infected by flu may mislead diagnosing. Here we propose a technique using Degenerate Unmixing Estimation Technique to separate the adenoid snore sound and normal heart beat sound while doctor examines a sleeping baby, with a case of enlarged adenoids. The snore sound is a noise which needs to be separated to get a clear rhythm of heart sound.

1. Chih-Yen Chien, An-Min Chen, Chung-Feng Hwang, Chih-Ying Su '"The clinical significance of adenoid–choanae area ratio in children with adenoid hypertrophy. " International Journal of Pediatric Otorhinolaryngology Volume 69, Issue 2 , Pages 235-239, February 2005, Copyright © 2012 Elsevier Inc.
2. Ishwar Singh, Geeta Gatwala, Rajni Pathania,J agat Singh "Hypertrophic tonsils Causing Articular Defect", The Indian Journal Of Pediatrics 1994, Vol 61, No: 1.
3. Soichiro Miyazaki, MD, Yoshiaki Itasaka, MS, Koji Yamakawa, MD, Masako Okawa, MD, Kiyoshi Togawa, MD, "Respiratory disturbance during sleep due to adenoid-tonsillar hypertrophy, " American Journal of Otolaryngology, Volume 10, Issue 2, March–April 1989, Pages 143–149. Available online 9 April 2004
4. Kevin D. Pereira ,Nisha K. Rathi, Adil Fatakia , Sajid A. Haque and Richard J. Castriotta," Body position and obstructive sleep apnea in 8–12-month-old infants", International Journal of Pediatric Otorhinolaryngology ,Volume 72, Issue 6, June 2008, Pages 897–900
5. Christian Guilleminault and Riccardo Stoohs," Chronic snoring and Obstructive sleep Apnea syndrome" Lung ,Springer -Verlag Suppl 912-919
6. O. Yilmaz, S. Rickard" Blind Separation of Speech Mixtures via Time-Frequency Masking" November 2002: IEEE Transactions on Signal Process¬ing
7. S. Rickard, R. Balan, J. Rosca"Real-Time Time-Frequency Based Blind Source Separation "December 2001: ICA2001 Conference, San Diego, CA.
8. Kari Torkkola, Unsupervised Adaptive Filtering, Volume 1: Chapter 8, Blind separation of delayed and convolved sources 2000: John Wiley & Sons Inc.
9. S. Rickard ,http://princeton. edu/˜srickard/bss. html Blind Source Sepa¬ration
10. "The Cardiovascular System. " Bates. B. A Guide to Physical Examination and History Taking. 9h Ed. 2005.
11. Constant, Jules (1999). Bedside cardiology. Hagerstwon, MD: Lippincott Williams & Wilkins. pp. 123. ISBN 0-7817-2168-7.
12. R S Khandpur, "Handbook of Biomedical Instrumentation", Tata McGraw Hill Publication, 2003

Blind Source Separation Adenoid Duet Algorithm Heart Sounds.