噪音

The songs of Chinese bulbul showed smaller dialect systems among the 3 different environment noise habitats. The smaller dialect systems might be resulted from fragmented habitats. For transmitting messages successfully, Chinese bulbul contending with masking of anthropogenic noise by the higher minimum frequency, the lower maximum frequency, and the narrower band in the urban area.

白头翁歌曲在台中市三个不同程度噪音干扰的栖地环境间，呈现小规模的方言系统，可能与都会破碎化的栖地类型有关；在都会环境人为的低频噪音影响下，为了抗衡噪音遮蔽干扰，白头翁歌曲的最低音频升高、最高音频降低、频宽缩窄，以有效传达声音讯息。

Most of the frequency（1455.99 ± 187.09 Hz to 3534.13 ± 301.53 Hz）of songs in Chinese bulbul are overlapped with environment noise（under 3000Hz）. In order to study the impact of urban noise on the song performances of Chinese bulbul, this study was carried out at Taichung urban areas focusing on the difference of dialects between different environment noise habitats（Shu Yi Area, Chung Hsing University, Taichung Metropolitan Park） from March to November 2007. In addition to the 3 study sites, I sampled another 6 sites （Fengle Park, Taichung Park, Botanical Garden, Art Boulevard, Ren De Village, Tong Lin Village）to find out the differences of songs frequency resulted from different environment noise habitats.

为了探讨都市噪音对白头翁鸣唱的影响，本研究於2007年3至11月以微地理尺度，探讨台中市都会地区三个不同程度噪音干扰的栖地环境(树义地区、中兴大学、台中市都会公园)之间白头翁歌曲的方言差异；另加入六小样区（台中市丰乐公园、台中市台中公园、台中市国立自然科学博物馆植物园区、台中市国立美术馆绿园道、台中县乌日乡仁德村、台中县雾峰乡桐林村），探讨在不同的噪音值干扰下，有关白头翁歌曲音频的表现。

The factors that influence the noise performance of lithium-based grease were researched,the cleanliness of grease is merely one of essential conditions to decrease noise,the particle size of lithium soap thickener is smaller,the noise performance of grease is better,and the low viscosity naphthene base oil has good effect to decrease noise,the polymer can improve lubricity and decrease noise.

研究了影响锂基润滑脂噪音性能的各种因素，润滑脂的清洁度只是降低噪音的必要条件之一，锂皂稠化剂的微粒越小，润滑脂的噪音性能越好，低粘度的环烷基油具有良好的降低噪音的效果，高分子聚合物可以改善润滑性能，降低噪音。

NB/ANL button. Pressing this button enables the built in noise reducing functions. There are: noise blanker only, both noise blanker and automatic noise limiter, and automatic noise limiter only.

NB/ANL button ：静噪/噪音自动限制器按钮，按下这个按钮产生减少噪音功能：仅是噪音抑制器；既是噪音抑制器又是噪音自动限制器；和仅是噪音自动限制器。

The results of empirical research indicates that: Nonrecurring gains have a significant positive impact on the stock price, instead nonrecurring losses don't have a significant impact on the stock price; Nonrecurring gains and losses have an obvious information noise, and nonrecurring losses have greater information noise than nonrecurring gains; Nonrecurring gains and losses of the listed companies when the absolute value of more than 10% of the return of extraordinary items have greater information noises than the companies which has the absolute value of less than 10% of the return of extraordinary items.

研究发现：对于我国经常发生非经常性损益的上市公司，其非经常性收益对股票价格有显著的影响，非经常性损失对股票价格没有显著的影响；非经常性损益具有明显的信息噪音，并且非经常性损失的信息噪音更大，非经常性收益的信息噪音不明显；非经常项目利润率绝对值为10%以上的上市公司的非经常性损益的信息噪音要比非经常项目利润率绝对值为10%以下的信息噪音大。

Plate and λ/2 plate were placed inside the Nd∶YVO4KTP green laser cavity with angle 90°between their fast axis.The composite plate composed of HWP,QWP and KTP has the function of QWP.The composite plate with Nd∶YVO4 can effectively suppress the coupling of polarized modes,and multi-longitudinal-mode lownoise green laser was obtained.Since the composite plate counteracted the phase shift induced by temperature sensitivity of quartz plate,the green laser operated with lownoise reliability in different output power and different operation temperature.The threelongitudinalmode, the noise of less than 0.5% and output power stability of less then 1% for 12 hour are obtained in the green laser.

介绍了一种LD泵浦腔内倍频全固体Nd∶YVO4KTP多纵模、低噪音、高功率稳定绿激光器在Nd∶YVO4KTP绿激光器组成的谐振腔内放置厚度约相等的石英晶体λ2波片和λ4波片，使两波片快轴夹角互呈90°，HWP、QWP与KTP构成复合波片，其作用相当于QWP，此复合波法与各相异性Nd∶YVO4共同作用有效抑制了腔内偏振模耦合，获得多纵模低噪音绿光输出此复合波片相互作用由于抵消了石英晶体波片温度敏感引起的相位延迟量漂移，所以此激光器在不同功率、不同工作温度下，均能稳定可靠地运转于低噪音状态实验结果为，绿光输出纵模数为3个，噪音小于0.5%，12 h功率稳定性优小于1

The study also evaluates the effects of FbAANC headset on speech intelligibility on a disyllabic Mandarin word discrimination test platform. We expect someone under the noisy environment in SNR equal 0,–5,–10,-15,-20 and –25 dB, the noise cancellation technique could either improve the speech discrimination effectively. Finally, the SNR below -10dB, the mean WDT score with FbAANC headset was superior to without FbAANC headset 13 to 32% through 30 subjects of normal hearing threshold for evaluation. These results suggest that the FbAANC headset would be useful for hearing protection in workplaces with high levels industrial noise.

同时，本论文亦透过华语双字词语音辨识力测验，以评估此噪音消除技术对於语音理解力的影响，期望在SNR为0，-5，-10，-15，-20和-25dB的环境下，暸解噪音消除技术能否有效提升语音辨识力；经过30位正常听力的受测者之评估，我们可以得到当讯噪比在-10 dB以下时，经过噪音消除后的语音辨识力成绩可明显地提升13 to 32%，因此，本噪音消除耳机确实可以作为耳机防护以提供给工人对抗高分贝的工厂噪音。

Subsets of noise are AC power-related hum and buzz, electronic crackling, vinyl record clicks and pops, between-station radio noises, tape modulation noise, and the triboelectric cable effect.

噪音可分为交流电源产生的嗡嗡声、电器开关弹开声、塑胶磁带咔哒声、台间无线电噪音、调制磁带时的噪音、摩擦电效应噪音等几个不同的组。

Especially her later work (Friction: Undescribable 《摩擦:无以名状》; Salsa and Pink Noise 《粉红色噪音》) explores and stretches the limits of language.

从那时起，她开始对这样的诗歌主张提出越来越强烈的质疑，特别是她后来的那些作品，如《摩擦：无以名状》，《萨尔萨》和《粉红色噪音》，探索并扩展了语言的界限。

After the cut-off frequency has been determined, the active noise-filtered system can be designed with several circuits to filter out those frequencies higher than the cut-off frequency and reserve the speech voice only. Besides, the music signals from the MP3 or a CD player can also be transmitted to the earplug system for increasing the signal noise ratio. The anxiety and tension of patients during treatments can, thus, be relaxed due to the euphonious music and toothaches of the patient might be further reduced.

本研究首先以离线的方式收集各类牙科噪音，然后将它传递到个人电脑，并使用CoolEdit及LabVIEW软体程式，分析出在牙科治疗过程中所产生之噪音的频率范围，最后透过各种比较，找出适当的截止频率，在截止频率(1KHz)被决定之后；针对该截止频率，使用主动式滤波的方式设计出相关的电路，组成主动式噪音率除系统，来滤除那些高於截止频率的噪音信号，只保留语音频率范围；此外透过mp3或cd player所播放出的音乐讯号，也可以同时被传递到耳塞系统来增加信号杂讯比，那麼当病人在治疗时，因为有这音乐可以使病人的焦虑跟紧张获得舒缓。

Graf, without question, is the greatest women's player in history.

格拉芙，现在，毫无疑问是女子网坛历史上最伟大的选手。

If not, you will have to look around at all your important data.

如果没有，您将需要检查所有的重要数据。