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Low-frequency noise around airports
The Journal of the Acoustical Society of America, 1998The sound frequency weighting PNdB has been proposed by Kryter (1959) to assess the noise from jet engine aircrafts. Due to the technical evolution of aircraft engines, and to choose a frequency weighting common to all transport systems, the dB(A-weighted) has begun to be used as the acoustical unit around airports; the PNdB is still used for noise ...
Michel Vallet, Jean Claude Bruyere
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Radio and Electronic Engineer, 1971
To compare errors arising in a measuring instrument from drift and low frequency (1/f) noise, the behaviour of the latter in the time domain is calculated. The standard deviation is expressed in terms of the cut-off frequency and integration time of the instrument, and the frequency index of the noise, which can be measured at audio frequencies ...
G.G. Bloodworth, R.J. Hawkins
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To compare errors arising in a measuring instrument from drift and low frequency (1/f) noise, the behaviour of the latter in the time domain is calculated. The standard deviation is expressed in terms of the cut-off frequency and integration time of the instrument, and the frequency index of the noise, which can be measured at audio frequencies ...
G.G. Bloodworth, R.J. Hawkins
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Oceanic low frequency ambient noise
OCEANS 2000 MTS/IEEE Conference and Exhibition. Conference Proceedings (Cat. No.00CH37158), 2002Ambient noise has been attributed to bubbles spray and splash produced by wind action and breaking waves at the higher frequencies. However, the large bubbles required to produce low frequency noise are not found at sufficient depths and consequently whether low-to-mid-frequency noise (LMF, 10-500 Hz) was produced and by what mechanism has been a ...
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Precision low frequency noise measurement
7th IEEE Conference on Instrumentation and Measurement Technology, 2002Techniques have been developed for conveniently making precision (1%) noise spectral density measurements in the 10/sup -3/-kHz to 35-Hz or higher range. Application interest is particularly in the area of amplifier l/f noise measurement. Measurements are made by overlap averaging of the fast Fourier transform (FFT) with analog preconditioning of the ...
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Low Noise Frequency Synthesis Techniques
Low noise frequency synthesizers and PLLs are a critical part of both wireless and wireline communication infrastructure. As data rates continue to increase in the datacenter and in consumer devices such as Wi-Fi networks, the PLL jitter requirements are becoming increasingly strict.openaire +1 more source
Low Noise Frequency- Multiplication
26th Annual Symposium on Frequency Control, 1972openaire +1 more source
Modeling Low-Frequency Hamiltonian Noise
APS March Meeting - Las Vegas, Nevada, United States of America - March - 2023, 2023Corey Ostrove +4 more
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