Performance Comparison Between B-71 and B-81 Bone Conduction Headphones

ZHAO Zhengyi; ZHONG Bo; HE Longbiao; JI Fei; LIN Ying; TIAN Feng

doi:10.12338/j.issn.2096-9015.2020.9019

Volume 65 Issue 11

Nov. 2021

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ZHAO Zhengyi, ZHONG Bo, HE Longbiao, JI Fei, LIN Ying, TIAN Feng. Performance Comparison Between B-71 and B-81 Bone Conduction Headphones[J]. Metrology Science and Technology, 2021, 65(11): 11-13, 28. doi: 10.12338/j.issn.2096-9015.2020.9019

Citation:

ZHAO Zhengyi, ZHONG Bo, HE Longbiao, JI Fei, LIN Ying, TIAN Feng. Performance Comparison Between B-71 and B-81 Bone Conduction Headphones[J]. Metrology Science and Technology, 2021, 65(11): 11-13, 28. doi: 10.12338/j.issn.2096-9015.2020.9019

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Performance Comparison Between B-71 and B-81 Bone Conduction Headphones

doi: 10.12338/j.issn.2096-9015.2020.9019

1.
National Institute of Metrology, Beijing 100029, China
2.
College of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital, Beijing 100853, China
3.
The First Affiliated Hospital of Air Force Military University of PLA, Xi'an 710032, China

Available Online: 2021-04-29
Publish Date: 2021-11-01

Abstract

Abstract

A measurement system for bone conduction headphone acoustic parameters was designed to explore the advantages and potential applications of new bone conduction headphones in audiology tests. The maximum output intensity and harmonic distortion of two commonly used bone conduction headphones, i.e. B-71 and B-81, were compared at five listening frequencies. At the same maximum output intensity, the harmonic distortion of B-81 headphones at four frequencies in the range 250 Hz to 2 000 Hz was significantly lower than that of B-71, and no significant difference in the harmonic distortion of B-71 and B-81 headphones was observed at 4 000 Hz. B-81 headphones were better than B-71 headphones in terms of both the maximum output intensity and the harmonic distortion, especially in the low and middle frequency bands. The test results show that B-81 can be used instead of B-71 in audiology-related tests.
- bone conduction headphones,
- maximum output intensity,
- harmonic distortion,
- frequency

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References(13)

References

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