sound pressure level

1. Measurement of sound pressure level for sound signal appliances by seagoing vessel
   GB/T12303-1990海船声号器具的声压级测量
2. A stereo effect is achieved through differences in sound pressure level between two microphones.
   立体声效果是通过在不同的声压水平之间的两个话筒。
3. Dipole Source Identification in Last Stage of Propylene Compressor Metal-cutting machine tools& Measurement method of sound pressure level
   丙烯压缩机末级偶极子气动声源识别GB/T16769-1997金属切削机床噪声声压级测量方法
4. Sound Pressure Level ( SPL) Sound pressure level is a measurement of the pressure fluctuations of a sound wave as it propagates through the air.
   声压级别声压级别是表示在空气中传播的声波的起伏压。
5. AQ12 has a true natural performance of its greatest feature is lightweight and has a higher sound pressure level, it needs to meet a lot of small speakers and a small space to meet the occasion.
   AQ12有着真实自然的表现，其最大的特点就是轻巧而又拥有较高的声压级，恰恰满足了很多需要小巧音箱而满足小空间的场合。
6. Uncertainty in Measurement on Sound Pressure Level of Horn for Motor Vehicle
   机动车用喇叭声压级测量不确定度分析
7. Higher sound pressure level ( SPL) favored both collision efficiency and agglomeration kernel, so acoustic agglomeration increased in the higher-intensity acoustic field.
   声压级增大不仅使团聚核函数增大，也增大了碰撞效率，使高声压级时的团聚更有效。
8. Combining with the national and foreign related standards, the selection of SPL ( Sound Pressure Level) of sound reinforcement system is discussed in terms of technique and implement.
   从技术和实际应用角度，结合国内外相关标准，对扩声系统声压级的设置进行了论述。
9. Metal-cutting machine tools& Measurement method of sound pressure level
   GB/T16769-1997金属切削机床噪声声压级测量方法
10. Forecast of Sound Pressure Level of Gear Systems and Fault Diagnosis Based on Acoustics
    齿轮系统噪声预估及声诊断方法研究
11. In order to calculate the sound pressure level of noise signal, a new arithmetic of noise frequency weight, which is based on spline interpolation, is presented in this paper.
    为实现对采集到的噪声信号进行声压级计算，提出了一种新的基于样条插值法的频谱计权算法。
12. Firstly, this paper make noise and vibration experiment, carry out the sound power, sound pressure level ( A) and vibration of shell in three work conditions, obtain the noise and vibration spectrum.
    本文首先对压缩机进行了噪声振动测试，分别对压缩机三种工况下进行声功率、声压级和壳体振动测试，获得噪声和振动频谱。
13. Spectrum analysis is carried out when Sound Pressure Level of motorcycle acceleration running noise achieves its maximum, then the noise characteristic is studied on, and the working condition of Sound intensity measurement is determined.
    对摩托车加速行驶噪声声压级达到最大时的噪声进行频谱分析，研究其噪声特性，并确定了声强实验的工况。
14. This paper studies the sound power, sound pressure level, shell vibration, model experiment about the hermetic reciprocating compressor. Analyze the vibration and noise origin, make certain the mode of vibration and point out the path of further noise reduction.
    对全封闭往复压缩机进行了声功率、声压级、壳体振动和壳体模态试验，分析了压缩机主要振动和噪声源，确定了壳体的振动模态，指出了进一步降低压缩机噪声的途径。
15. The function of the optimum sound pressure level of the rolling bearing noise is established especially for applications to engineering.
    为了在工程上应用，特别建立了最优滚动轴承噪声声压级函数。
16. Measurement and calculation of sound pressure level and sound power level.
    声压级及声功率级的测量和计算。
17. With the introduction of these methods, the gear sound pressure level can be decreased.
    使用这些方法可以降低齿轮的声压级。
18. It first introduces several basic parameters in noise measuring, and deduces the sound intensity analysis principle mainly using frequency domain analysis, that is analyzing the principle of noise spectrum analysis from aspects of narrow band spectrum, sound pressure level spectrum, octave spectrum etc.
    首先介绍了噪声测量中的几个基本参数，从窄带频谱、声压级谱、倍频程频谱等分析了噪声谱分析原理.主要从频域分析法对声强分析原理进行了详细推导。
19. 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.
    分析表明了声品质在这类非声学建筑中的重要性，另外，即使客观指标例如声压级和混响时间相同，声舒适度亦可能完全不同。
20. Regularities of pressure on surface with sound pressure level and frequency are also given.
    并给出了模型表面压力随声压级及频率变化的规律。
21. The method of average sound pressure level and average sound intensity was used for processing noise test data.
    针对噪声测试结果，运用平均声压级法和声强平均法对试验数据进行处理。
22. Different signal processing methods including equivalent sound pressure level, coherence function and auto power spectrums were used to evaluated the vibration and noise signals. The effects of grooved surface texture on the vibration and noise properties of the friction system were studied.
    采用等效声压级、相干函数及自功率谱等不同的信号处理方法，对摩擦噪声及振动信号进行分析，研究沟槽形表面织构对摩擦系统的振动及噪声的影响。
23. Meanwhile, the increase of the sound pressure level ratio language of sound to masking sound causes annoyance decrease.
    同时，随着语言声与掩蔽声声压级比的增加，带来的声舒适度也在增加。
24. Aeroacoustics is faced with research environments about high sound pressure level and wide frequency band. The air current sound generator is exactly the most suitable sound source providing this kind of environment.
    气动声学面临的是高声压级和宽频带的研究环境，而气流发声器正是提供此类环境的最合适的声源。
25. It is the sound quality evaluation method that appears to make up for the defects of A sound pressure level. It takes the features of the auditory into consideration and can accurately reflect the ear auditory subjective feeling.
    声品质评价方法的出现弥补了A计权声压级的这一缺陷，声品质评价方法充分考虑了人耳的听觉特性，能够准确反映人耳听觉的主观感受。
26. The radiation sound pressure level and the mean vibration velocity level reduced Significantly for being covered the damping layer.
    敷设自由阻尼层后壳体辐射声功率级和表面振动均方速度级都有明显的降低。
27. Industrial noise has high sound pressure level and big harm, not only influence the Human health, but also cause harm for mechanical equipment and building structures.
    工业噪声声压级高、危害大，不仅损害人体健康，对机械设备和建筑结构也会产生危害。
28. Frequency and sound pressure level increase with the extra pressure in front of nozzle.
    频率和声压级随喷嘴前余压的增大而增大。

noun

1. the physical intensity of sound

   Synonym:    acoustic power