B. Ramachandra RaoSpringer IndiaProceedings of the Indian Academy of Sciences - Section AB. Rao, "Very high frequency sound velocities in acetone water mixtures," Pro- ceedings Mathematical Sciences, vol. 25, no. 2, pp. 190-194, 1947....
Remarkably, the team'samplifiercan amplify gigahertz frequency sound waves just as well as state-of-the-art microwave amplifiers amplify frequency radio waves, while also exhibiting a remarkably high nonreciprocal transmission. In the future, it could be used to increase the performance and broaden t...
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frequency and simplex frequency modulation, which is used in very high frequency range in particular to talking communications between drivers and rigging workers in cranes works and in short range districts, comprising a sound control part, a transmitting part, a receiving part and a power supply ...
Measurement of very high frequency (VHF) sound in our daily experiencesdoi:10.3397/IN-2021-2647Harusawa, KokiInamura, YumiHiroe, MasaakiHasegawa, HideyukiNakamura, KentaroUeda, MariINTER-NOISE and NOISE-CON Congress and Conference Proceedings
Radio broadcasting systems; Very High Frequency (VHF), frequency modulated, sound broadcasting transmittersdoi:ETSI ETS 300 384指定用于将调频声音广播信号传输至CCIR rec 450的发射机.包括单声道和立体声信号
The single frequency microseism peak between 0.06 and 0.1 Hz is evident as a band of high coherence. These waves propagate as fundamental mode Rayleigh waves with phase velocities near 4 km/s. Pressure fluctuations measured within the double frequency microseism peak are coherent only between the...
Gambino: Correlating very low frequency sound pulses to audible wind turbine sound, in Proc. 4th Int. Meeting on Wind Turbine Noise, Rome April 11-14th, 2011;Richarz, W., Richarz, H., & Gambino, T. (2011). Correlating very low frequency sound pulse to audible wind turbine sound, Aer...
Literature has linked very high and ultrasonic frequency sound in air to tinnitus and other "subjective" effects, including headache and nausea, for over 40 years. Very little attention has been paid to the subject in the last 30 years, however the use of these frequencies is rapidly becoming...