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Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking

Year 2017, Volume: 17 Issue: 1, 3275 - 3282, 27.03.2017

Abstract

Background and aim: Respiratory
sounds, i.e. tracheal and lung sounds, have been of great interest due to their
diagnostic values as well as the potential of their use in the estimation of
the respiratory dynamics (mainly airflow). Thus the aim of the study is to
present a new method to filter the heart sound interference from the tracheal
sounds.

Materials and methods: Tracheal
sounds and airflow signals were collected by using an accelerometer from 10 healthy
subjects. Tracheal sounds were then pre-processed by Recursive Least Square -
Adaptive Noise Cancellation (RLS-ANC) filter to remove background noise. Gabor
time-frequency expansion was used for both heart sound localization and
reduction problem.

Results: In
the first step of filtering, RLS-ANC successfully filtered out the broad - band
ambient noise. Reconstruction of tracheal sound was achieved from modified
Gabor coefficients without heart sound noise.







Conclusion: Visual inspection and quantitative analysis
demonstrated that Gabor time-frequency masking with RLS-ANC filters provides successful
tracheal sound signal separation.

References

  • [1] Pasterkamp H, Kraman SS, Wodicka GR. Respiratory sounds advances beyond the stethoscope. Am J Respir Crit Care Med 1997; 156: 974-987.
  • Moussavi Z, Leopando MT, Pasterkamp H, Rempel G. Computerized acoustical respiratory phase detection without airflow measurement. Med Biol Eng Comput 2000; 38(2): 198-203.
  • Yadollahi A, Zaussavi Z. A robust method for estimating respiratory flow using tracheal sounds entropy. IEEE Trans Biomed Eng 2006; 53(4):662-668
Year 2017, Volume: 17 Issue: 1, 3275 - 3282, 27.03.2017

Abstract

References

  • [1] Pasterkamp H, Kraman SS, Wodicka GR. Respiratory sounds advances beyond the stethoscope. Am J Respir Crit Care Med 1997; 156: 974-987.
  • Moussavi Z, Leopando MT, Pasterkamp H, Rempel G. Computerized acoustical respiratory phase detection without airflow measurement. Med Biol Eng Comput 2000; 38(2): 198-203.
  • Yadollahi A, Zaussavi Z. A robust method for estimating respiratory flow using tracheal sounds entropy. IEEE Trans Biomed Eng 2006; 53(4):662-668
There are 3 citations in total.

Details

Journal Section Articles
Authors

Esra Saatcı

Aydın Akan

Publication Date March 27, 2017
Published in Issue Year 2017 Volume: 17 Issue: 1

Cite

APA Saatcı, E., & Akan, A. (2017). Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking. IU-Journal of Electrical & Electronics Engineering, 17(1), 3275-3282.
AMA Saatcı E, Akan A. Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking. IU-Journal of Electrical & Electronics Engineering. March 2017;17(1):3275-3282.
Chicago Saatcı, Esra, and Aydın Akan. “Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking”. IU-Journal of Electrical & Electronics Engineering 17, no. 1 (March 2017): 3275-82.
EndNote Saatcı E, Akan A (March 1, 2017) Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking. IU-Journal of Electrical & Electronics Engineering 17 1 3275–3282.
IEEE E. Saatcı and A. Akan, “Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking”, IU-Journal of Electrical & Electronics Engineering, vol. 17, no. 1, pp. 3275–3282, 2017.
ISNAD Saatcı, Esra - Akan, Aydın. “Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking”. IU-Journal of Electrical & Electronics Engineering 17/1 (March 2017), 3275-3282.
JAMA Saatcı E, Akan A. Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking. IU-Journal of Electrical & Electronics Engineering. 2017;17:3275–3282.
MLA Saatcı, Esra and Aydın Akan. “Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking”. IU-Journal of Electrical & Electronics Engineering, vol. 17, no. 1, 2017, pp. 3275-82.
Vancouver Saatcı E, Akan A. Heart Sound Localization and Reduction in Tracheal Sounds by Gabor Time-Frequency Masking. IU-Journal of Electrical & Electronics Engineering. 2017;17(1):3275-82.