FIELD: machine engineering.;SUBSTANCE: in the stand for investigating acoustic characteristics of the sound-absorbing elements in the reverberation chamber, there is a noise radiation source which is mounted on the floor of the reverberation chamber which is a room with volume from 60 to 1000 m3 ...
Controlling the acoustic impedance of the upstream airways in brass instrument performance may be an important factor influencing the efficiency of the sound production process. Because of the complex characteristics of the lip-valve osc... V Fréour,N Lopes,T Hélie,... - 《Acta Acustica United...
Binaural beat stimulation (BBS) is a recognized form of sound therapy found to effectively modify and regulate brain waves affected by tinnitus. These beats are auditory perceptions generated in the brain through the activation of neurons in both ears that are generated by presenting two sine waves...
The low-frequency attenuation in the direct sound due to the concert hall seats, i.e., the seat-dip effect, is studied with the help of a scale model comprising an adjustable seating area and an enclosed box. More particularly, different seat underpass s
B) Headaches have at least two of the following four characteristics: 1) Unilateral location. 2) Pulsating quality. 3) Moderate or severe pain intensity. 4) Aggravated by or avoidance of routine physical activity (e.g. walking or climbing stairs). C) During headaches, at least one of the...
Table I shows the characteristics of the participants. Skill level was established by self-declaration. Most participants were highly experienced; athletes with advanced skills were certified skiing/snowboarding instructors. Volunteers of intermediate level were not instructors. There were no beginners ...
The coated beam method has long been used extensively for investigating the dynamic elastic characteristics of vibration damping materials. With this method, the beam is coated with the damping material on one side, or on both sides, and the resonances of bending vibration of the metal and ...
所属专辑:SCI参考文献朗读 声音简介 Investigating Land Surface Effect on the Moisture Transport over south America with a Moisture Tagging Model 下载手机APP 7天免费畅听10万本会员专辑 声音主播 造字仓颉 2476243510 TA的专辑 更多 《全球变化科学导论》第四版2.2万 ...
In order to obtain an output having the characteristics of the curve 62, the scanning tip 26 is vibrated or oscillated by a small amplitude in the order of tenths of nanometers. Thus, as seen in Figure 3, if the scanning tip 26 is oscillated over a range Δz in an intermediate region...
Investigating The Sound Field Characteristics in a Reverberant Room using 2D Cross-Spectral Density MeasurementReverberant room is a fundamental tool in acoustics, used for several test procedures such as the measurement of porous materials sound absorption, the power of a source or the Diffuse ...