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- Measurement of sound pressure level for sound sign. 海船聲號器具的聲壓級測量。
- saturation sound pressure level 飽和聲壓(級)
- Usually, the problem is how to reduce the sound pressure level, either at source or on the transmission path. 通常噪聲問(wèn)題的解決辦法就是在其聲源處或是在其傳播途中降低其聲壓水平。
- Sound Pressure Level (SPL) Sound pressure level is a measurement of the pressure fluctuations of a sound wave as it propagates through the air. 聲壓級別聲壓級別是表示在空氣中傳播的聲波的起伏壓。
- Ultra-low distortion at extreme sound pressure levels. 超低失真的極端聲壓級。
- Objective To study the change and significance of GFAP in thebrain of the mice exposed to infrasound of different sound pressure level . 目的研究不同聲壓級次聲作用小鼠后腦中膠質(zhì)纖維酸性蛋白(GFAP)的改變和意義。
- Conclusion The extent of GFAP change is closely related to the action times under infrasound of same sound pressure level. 結論馬、皮質(zhì)和下丘腦等區域對次聲敏感，次聲的作用效應與聲壓級和作用時(shí)間有關(guān)；
- The loudness in the hall is introduced and the investigated results are analyzed by the strength and LpF which is the mean sound pressure level of tutti-sound. 介紹了廳堂響度的評價(jià)指標,然后利用強度指數和廳堂樂(lè )隊齊奏強音標志樂(lè )段的平均聲壓級LpF對現有的廳堂調研結果進(jìn)行分析。
- In this paper, a cab is analyzed with SYSNOISE for the sound pressure level (SPL), structural mode participation factors and acoustic mode participation factors in the cavity. 在計算實(shí)例中，計算了由于汽車(chē)發(fā)動(dòng)機振動(dòng)引起的車(chē)內噪聲的聲壓級、結構模態(tài)的振動(dòng)參與因子和聲學(xué)模態(tài)的參與因子，分析了引起車(chē)內噪聲的主要原因。
- After two-grade demarcate, the A/B/C sound pressure level, the gross sound pressure level and the sound power level are produced with the application of A, B, C level fuzzy net. 通過(guò)二級標定，引入A、B、C三檔模糊計權網(wǎng)絡(luò )，生成A、B、C三檔聲級及總聲級，求取聲功率級，進(jìn)而依據三段評判對噪聲進(jìn)行進(jìn)一步的評判。
- INTRACRANIAL SOUND PRESSURE LEVELS DURING IMPULSSE NOISE EXPOSURE Saljo A. 在噪音刺激下顱內聲音壓力水平。
- It is revealed that acoustic quality is an important consideration in these buildings, and it may vary considerably with the same objective acoustic indices such as sound pressure level and reverberation time. 分析表明了聲品質(zhì)在這類(lèi)非聲學(xué)建筑中的重要性, 另外, 即使客觀(guān)指標例如聲壓級和混響時(shí)間相同, 聲舒適度亦可能完全不同。
- The flow characteristic of the open cavity and the variation of sound pressure level(SPL) caused by a control rod spoiler were investigated by means of numerical simulation and wind tunnel test. 本文利用數值模擬和風(fēng)洞實(shí)驗相結合的方法,研究了開(kāi)式流動(dòng)腔體的流動(dòng)機理及設置圓柱控制桿后,腔體內聲壓級(SPL)的變化。
- The mechanical vibration can be summarized to a new quantity called accumulated acceleration level (AAL) which is comparable with the sound pressure level (SPL) if no acoustical cancellation occurs. 這些數據可用掃描技術(shù)在輻射體表面測量。
- There is a remarkably wide range of frequencies and sound pressure levels over which the human ear can detect. 人類(lèi)耳朵對聲音頻率和聲壓級的感應范圍很廣。
- A special ALC circuit handles very high sound pressure levels but without distortion. 采用特別ALC電路不用擔心音量過(guò)大而失真.
- Each professor was chosen based upon his or her exposure to various sound pressure levels (SPL). 本試驗利用音波的此項特性，對于砂土層滑動(dòng)所產(chǎn)生之聲音進(jìn)行量測。
- For maximum sound pressure levels large sound reinforcement systems frequently use a separate compressor on each output of the electronic crossover(s). 對于最大的聲壓電平，巨大的聲音增強系統，通常在每一個(gè)電子分頻器的輸出后面拉一個(gè)獨立的壓限器。
- While physical hearing protection can reduce sound pressure levels， they do not adequately prevent NIHL in very noisy environments. 對聽(tīng)力的物理防護可以降低聲壓水平，但若噪聲過(guò)強，這種物理防護并不能完全保證聽(tīng)力不受損害。
- maximum sound pressure level of microphone 傳聲器最高聲壓級
