噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2013年
z1期
337-340
,共4页
声学%护听器%听力保护%结构-声耦合%隔声值%耳塞%耳罩
聲學%護聽器%聽力保護%結構-聲耦閤%隔聲值%耳塞%耳罩
성학%호은기%은력보호%결구-성우합%격성치%이새%이조
coupled structural-acoustics system%sound attenuation%earplugs%earmuffs
由单个护听器隔声指标计算双重护听器的隔声指标技术原理一直是国内外听力保护学者研究的热点和难点。根据结构透声系数计算原理和噪声通过耳道与骨骼肌肉等传递到内耳的受声面积相同的假定，分析双重护听器（耳塞+耳罩）的声学耦合，导出一种双重保护器的声学耦合模型，实验数据表明，在频率2～4 kHz范围内，该模型能够根据单个护听器隔声指标计算双重护听器的隔声指标。
由單箇護聽器隔聲指標計算雙重護聽器的隔聲指標技術原理一直是國內外聽力保護學者研究的熱點和難點。根據結構透聲繫數計算原理和譟聲通過耳道與骨骼肌肉等傳遞到內耳的受聲麵積相同的假定，分析雙重護聽器（耳塞+耳罩）的聲學耦閤，導齣一種雙重保護器的聲學耦閤模型，實驗數據錶明，在頻率2～4 kHz範圍內，該模型能夠根據單箇護聽器隔聲指標計算雙重護聽器的隔聲指標。
유단개호은기격성지표계산쌍중호은기적격성지표기술원리일직시국내외은력보호학자연구적열점화난점。근거결구투성계수계산원리화조성통과이도여골격기육등전체도내이적수성면적상동적가정，분석쌍중호은기（이새+이조）적성학우합，도출일충쌍중보호기적성학우합모형，실험수거표명，재빈솔2～4 kHz범위내，해모형능구근거단개호은기격성지표계산쌍중호은기적격성지표。
How to computer sound attenuation from combinations of earplugs and earmuffs is the research hotspots and difficulties for hearing conservation experts in the world. This paper, analyzed combinations of double hearing protectors with earplugs ands earmuffs, derived a mathematic model of coupled structural-acoustics system in sound attenuation from combinations of earplugs and earmuffs using acoustical transitivity, principle, and hypotheses of air conduction and bone conduction having the same basilar membrane. The experiment values coincided with theoretical values of the mathematic model for sound attenuation from combinations of earplugs and earmuffs in 2~4 kHz.
