Jayne R Stevens 1 , Travis J Pfannenstiel 2 Show Affiliations »
Abstract
OBJECTIVE: To determine if the manner in which a tuning fork is activated affects its vibrational response. STUDY DESIGN: Diagnostic test assessment. SETTING: Hearing Center of Excellence laboratory. SUBJECTS AND METHODS: A Polytec OFV-5000 scanning vibrometer was used to measure the vibrational response of 256-Hz, 512-Hz, and 1024-Hz tuning forks after activation. The tuning forks were activated to varying intensities by striking 4 unique surfaces: the head, palm, a metal surface, and a wood table. RESULTS: The fundamental frequency of the individual tuning fork was the dominant observed frequency in all testing scenarios. Additional nonharmonic frequencies were noted when the 256-Hz and 512-Hz tuning forks were struck off metal and wooden surfaces. CONCLUSIONS: Additional nonfundamental sound frequencies produced secondary to striking a tuning fork off a metal object or a wooden table could affect clinical tuning fork examination and complicate decisions regarding surgical candidacy. © American Academy of Otolaryngology—Head and Neck Surgery Foundation 2014.
OBJECTIVE: To determine if the manner in which a tuning fork is activated affects its vibrational response. STUDY DESIGN: Diagnostic test assessment. SETTING: Hearing Center of Excellence laboratory. SUBJECTS AND METHODS: A Polytec OFV-5000 scanning vibrometer was used to measure the vibrational response of 256-Hz, 512-Hz, and 1024-Hz tuning forks after activation. The tuning forks were activated to varying intensities by striking 4 unique surfaces: the head, palm, a metal surface, and a wood table. RESULTS: The fundamental frequency of the individual tuning fork was the dominant observed frequency in all testing scenarios. Additional nonharmonic frequencies were noted when the 256-Hz and 512-Hz tuning forks were struck off metal and wooden surfaces. CONCLUSIONS: Additional nonfundamental sound frequencies produced secondary to striking a tuning fork off a metal object or a wooden table could affect clinical tuning fork examination and complicate decisions regarding surgical candidacy. © American Academy of Otolaryngology—Head and Neck Surgery Foundation 2014.
Keywords:
fundamental frequency; scanning vibrometer; tuning fork
Mesh： See more »
Year: 2014
PMID： 25475500 DOI： 10.1177/0194599814559697
Source DB: PubMed Journal: Otolaryngol Head Neck Surg ISSN： 0194-5998 Impact factor: 3.497