Frequent exposure to high-frequency noise is commonly associated with hearing loss Low-Frequency Noise Low-frequency noise encompasses sound waves with frequencies below 300 Hertz, often defined as 500 Hz or less on Common Octave Bands. Characterized by deep pitch and long wavelengths, these sounds ...
radio frequency- an electromagnetic wave frequency between audio and infrared electromagnetic spectrum- the entire frequency range of electromagnetic waves Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. ...
Thus, using the low frequency band resonant frequency, the speaker system allows reproducing low-pitched sound in the case of having a flat characteristic... 野吕正夫 被引量: 25发表: 2006年 Bringing indexical orders to non-arbitrary meaning: The case of pitch and politeness in English and Kor...
How high or low a sound seems to a listener isits pitch. Pitch, in turn, depends on the frequency of sound waves. High-frequency sound waves produce high-pitched sounds, and low-frequency sound waves produce low-pitched sounds. Infrasound has wave frequencies too low for humans to hear. ...
1.high,medium,low frequency induction heater高中低周波感应加热炉 2.THE CLINICAL OBSERVATION OF THE TREATMENT OF LOW BACK AND LEGS PAIN USING XENON FLASH LOW FREGUENCY THERAPY AND NERVE BLOCK氙光低周波加封闭治疗腰腿痛的临床观察 3.The value of warm low-frequency therapeutic apparatus in the treatm...
Acoustic preliminary design of a low-noise fan stage considering a variable-area nozzle and variable-pitch rotor blades A low-noise low-pressure ultra-high-bypass-ratio fan stage to be implemented in the next generation of aircraft engines is described and evaluated acoustic... A Moreau,R Schnel...
Moreover, mechanical dicing in fabrication restricts pitch dimensions and causes the aliasing phenomenon7. As a result, the above coupling problems limit the array-filling ratio of high-performance components, precluding the development of wearable systems that require a high integration density at a ...
aUltrasonic is the name given to the study and application of ultrasound, which is sound of a pitch too high to be detected by the human ear, i.e. of frequencies greater than about 18 kHz [10]. 超音波的是名字被给超声波的研究和应用,是人的耳朵太高将查出的沥青的声音,即。 频率大于...
The objective of this work was to develop a concept to transmit high-intensity, low- frequency sound over a distance without large losses of sound-pressure level. An arbitrary goal of reducing the normal inverse square propagation law by 50 percent was chosen and achieved in the regions tested...
30. (Physical Geography) (intr) (of waves, tides, rivers, etc) to rise high, surge, or be at a specified height: a high sea was running that night. 31. (intr) to be diffused: the colours in my dress ran when I washed it. 32. (Knitting & Sewing) (intr) (of stitches) to...