An ear protector for keeping down sound in a personalized form by causing the insertion part to match the concha part of the auricle with an appendix that can open out in the auditory canal, said ear protector having a relatively wide duct, the widened part of which receives a sound ...
2. Pro For Sho Safety Ear Protection This Pro For Sho Safety Ear Protection might also be the piece of hearing protection device that can supply you with a hundred percent assurance of your security in whatever environment you are in. It has a 34-decibel noise reduction rating, which many ...
Ear protection cap with improved sound absorption 优质文献 相似文献 参考文献 引证文献Measurement of absorption with a p-u sound intensity probe in an impedance tube An alternative method of measuring the normal-incidence sound absorption of a sample of material in an impedance tube is examined. The...
A multi-purpose facility for research on hearing protection sound localizationacoustic test chambercomputer-controlled signalAssessment of the efficacy of personal hearing protectors is based on a wide range of factors,... C Giguère,SM Abel - 《Applied Acoustics》 被引量: 65发表: 1990年 Theoretical...
Protect your hearing with ESP's custom-fit electronic earplugs. Designed for shooting & hunting, they offer superior protection, clear sound, a 30-day trial, and a 1-year warranty.
24dB Nrr Ear Protection for Shooting, Safety Earmuff Defenders Sound Insulation Ear Muff, Find Details and Price about Hearing Protection Earmuffs from 24dB Nrr Ear Protection for Shooting, Safety Earmuff Defenders Sound Insulation Ear Muff - Yulong Safe
2. Our ear protection offers a 19 dB Noise Reduction Rating (NRR) for maximum safety on the job. 3. Help maintain your hearing and reduce the headache of constant loud noise with these earmuffs. 4. One size fits most users comfortably. ...
PORTABLE SOUND PROOF MASK (10); an ear muff (60) mounted at an end portion of the elastic compression piece (50) to get in contact with the user′s ear; a cover tube ... HJ Kim 被引量: 0发表: 2018年 Multifunctional helmet type anti-noise earshield for marine engine room The integ...
Protective earplug technology and overall quality have greatly improved over the last few years, alongside awareness of the importance of ear health, so there are no good excuses left for not wearing hearing protection in most musical situations. The oversized foam products that used to be your ma...
sound insulation values of each test was 26.36 卤 10.08 dB,and there was significant differences(P锕 0.05).After wearing earplugs for noise protection,... Chen Che - 《Modern Preventive Medicine》 被引量: 13发表: 2011年 Analysis of Noise Characteristics of Steel Mill The workers should wear ...