A.can be measured in the same way that "noise" is measuredB.may be extremely harmful to healthC.is not at all different from "noise"D.can be measured by machines 相关知识点: 试题来源: 解析 D [分析] 明示题。原文提到:“Sound” is measured physically in decibels.反馈...
Glass Plates Noise Transmission Suppression By Means of Distributed Piezoelectric Composite Actuators Shunted By an Active Circuit The sound shielding efficiency of the glass plate is measured by the acoustic Transmission Loss (TL). The effect of the shunted NC circuit and glass ... K Nováková,...
Previous studies using transducers in fixed partial dentures measured only a portion of the total force and have given the impression that chewing forces are much less than the data reported in this study. The importance of occlusal stability in the intercuspal position is of utmost clinical ...
Damage to these cochlear structures (sensorineural hearing loss) can increase thresholds for sound detection measured by the clinical audiogram, and accordingly, audiometric hearing loss putatively caused by noise exposure or the aging process is present in most tinnitus sufferers6. However, not all ...
Sensory cortices can be affected by stimuli of multiple modalities and are thus increasingly thought to be multisensory. For instance, primary visual cortex (V1) is influenced not only by images but also by sounds. Here we show that the activity evoked by sounds in V1, measured with Neuropix...
In practice, the distance between the machinery and the measurement aperture is too large for NAH because of the 3-dimensional features of the machine, so this method is investigated under the condition that the sound pressure is measured at about one wavelength from the sound source. The size...
The sound velocity is determined by launching a longitudinal wave, at the natural frequency of the disc, from one transducer and detecting the wave at the opposite transducer after a time, t. The sound velocity is calculated from the length of the acoustic path divided by the measured t that...
Sound localization by the microphone array is achieved by Sum and Delay Beam Former (SDBF) algorithm. A dedicated IEEE 1394 32-channel analog-to-digital (A/D) board with microphone amp is developed for this microphone array in order to keep a fixed cycle such a sampling rate of 11 kHz....
effect of the sound on the olive fruit flies. Secondly, we explored how the male’s wing vibration behavior is affected by the presence of conspecifics and we compared the acoustic parameters of sounds produced by solitary males with those produced in the presence of a male or female ...
18. The absorption spectrum of the collection chamber is measured by an Ocean Optics USB4000 spectrometer (Ocean Insight, US) after every stage of the following protocol. Initially, the absorption spectrum of the AuNIs (Supplementary Fig. 18a) is measured. Next, a Nano Think 11 solution is ...