Methodology for detecting swallowing sounds
Abstract
The use of cervical auscultation in the evaluation of the pharyngeal swallow may become a part of the clinical evaluation of dysphagic patients. Though its use is based on subjective evaluation, an acoustic analysis of swallowing sounds might establish more objective criteria in the detection of swallowing disorders. The present study sought to investigate three aspects of the methodology for detecting swallowing sounds: (1) the type of acoustic detector unit suited to an acoustic analysis of the pharyngeal swallow, (2) the type of adhesive suited for the attachment of the detector, and (3) the optimal site for sound detection of the pharyngeal swallow. An accelerometer with double-sided paper tape was selected as the appropriate detector unit because of its wide range of frequency response and small attenuation level. Using this detector unit, swallowing sounds and noise associated with simulated laryngeal elevation and the carotid pulse were acquired at 24 sites on the neck in 14 normal subjects; these signals were acoustically analyzed. The determination of the optimal site for detecting swallowing sounds was based on the signal-to-noise ratio. The site over the lateral border of the trachea immediately inferior to the cricoid cartilage is the optimal site for detection of swallowing sounds because this site showed the greatest signal-to-noise ratio with the smallest variance. The site over the center of the cricoid cartilage and the midpoint between the site over the cent…
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The previous setup for both accelerometer and microphone has proven to be effective in collecting swallowing vibrations42-45.
“The previous setup for both accelerometer and microphone has proven to be effective in collecting swallowing vibrations42–45.”
From Non-invasive identification of swallows via deep learning in high resolution cervical auscultation recordings (2020) · cites this paper as [42]
Cites
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Origin of the Sound Components During Pharyngeal Swallowing in Normal Subjects
Morinière, S., Boiron, M., Alison, D., Makris, P., & Beutter, P. (2008) · Dysphagia · doi:10.1007/s00455-007-9134-z · Cited by 88 · see citing works
Khalifa, Y., Coyle, J. L., & Sejdić, E. (2020) · Scientific Reports · doi:10.1038/s41598-020-65492-1 · Cited by 82 · see citing works
“The accelerometer complex (sensor in a plastic case) was attached to the skin overlying the cricoid cartilage for the best signal quality 42 .”
MethodStethoscope acoustics and cervical auscultation of swallowing
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A comparative analysis of swallowing accelerometry and sounds during saliva swallows
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A statistical analysis of cervical auscultation signals from adults with unsafe airway protection
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Silent Aspiration Detection in High Resolution Cervical Auscultations
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- Authors
- Takahashi, K., Groher, M., & Michi, K.-I.
- Affiliations
- James A. Haley Veterans' Hospital (US)
- SHOWA Medical University (JP)
- ORCID
- Takahashi, Koji
- Venue
- Dysphagia
- Published
- 1994
- Volume
- 9
- Issue
- 1
- Pages
- 54-62
- ISSN
- 0179-051X (ISSN-L)
- 1432-0460
- OpenAlex
- W2086464186
- Cited by
- 215
- References
- 1
- Citations by year
- 2026: 8 · 2025: 13 · 2024: 6 · 2023: 11 · 2022: 10 · 2021: 14 · 2020: 11 · 2019: 11 · 2018: 6 · 2017: 12 · 2016: 13 · 2015: 12 · 2014: 14 · 2013: 13 · 2012: 8
- FWCI
- 6.22
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Dysphagia (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Health Professions › Speech and Hearing › Dysphagia Assessment and Management
- Health Sciences › Medicine › Physiology › Voice and Speech Disorders
- Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Phonocardiography and Auscultation Techniques
- Keywords
- swallowing sounds, pharyngeal swallow, cervical auscultation, acoustic analysis, accelerometer, signal-to-noise ratio, cricoid cartilage, laryngeal elevation, dysphagia
- MeSH terms
- Acceleration, Acoustics, Adhesives, Adult, Auscultation, Carotid Arteries, Deglutition, Female, Humans, Laryngeal Cartilages, Larynx, Male, Movement, Paper, Pharynx, Plastics, Pulse, Rubber, Signal Processing, Computer-Assisted, Sound, Transducers
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