1. This equipment can detect very low frequency signals.

2. White noise is not a good simulator of music, which contains more energy at low frequencies than at high ones.

3. How can we reconcile the low frequency of expressions of emotional involvement in election campaigns with the high frequency of antagonistic partisanship?

4. High gain is achieved at low frequencies through incorporation of several differential stages of amplification.

5. Between these two maxima there is a lower frequency of depths representing the more shallow regions of the oceans.

6. At the opposite extreme of a pulse of extremely long duration, the Fourier spectrum only contains extremely low frequencies.

7. The electrodes were made from platinum-blacked platinum gauze to minimize electrode polarization at low frequencies.

8. In two developing countries, the lowest frequency of fetal mortality is at births above second but below sixth or seventh order.

9. A problem arises with the design of such filters for passing or stopping low frequencies.

10. Sound quality is good in the lower frequencies, but a bit thin higher up.

11. In the observed spectrum we find that several low frequency bands shift on deuterium substitution.

12. PNP epitaxial silicon transistor. Low frequency power amplifier.

13. Purpose: Small signal low frequency amplifier, high speed switching.

14. Purpose: For low frequency output amplification.

15. This paper deals with the low frequency damping of ZA27 alloy with solid solution treatment after natural ageing stability.

16. The line noise is a primary low frequency component of self-noise in submarines.

17. Using half-empiric method, C-layer effect of very low frequency (VLF) propagation phase is analyzed and modeled, moreover, the function of VLF phase prediction is modified.

18. Low frequency noise of thin-film resistor associate with it's micro-structures and technics closely.

19. Low frequency alternating magnetic field treatment is an innovative non thermal method to process welded samples with internal residual stresses.

20. Objective To investigate the curative effects of low frequency electric stimulation treating women with acute mastitis in puerperium.

21. Multiple gauge high and low frequency wire networks for accurate, natural sound reproduction.

22. Pseudo-Rayleigh wave at low frequency (high velocity)can be used for the computation of shear wave attenuation in virgin zone.

23. First, the male - female bonding is weakened owing to the low frequency of male interactions with most of his female companions.

24. Low - speed jet flames are known to flicker a low frequency.

25. In the paper, three field circuit ground protections with low frequency voltage injection which have been used are introduced.

26. The Programme Sub is a bass reflex subwoofer designed to compliment the full range models in the Programme series providing low frequency reinforcement.

27. Thethe first radiation mode corresponds to the volume velocity the plate at the low frequency.

28. Firstly, with the consideration of the frequency and aspect angle dependent parameters of the low frequency UWB-SAR, the radar equation for calibration is proposed.

29. The practices show that homomorphic filtering technology is effective to extract low frequency fault information in fault diagnosis of low speed and heavy-duty gear.

30. The proposed method is based on low-frequency signal injection, where a low frequency stator current signal is injected and the corresponding angle error is detected to estimate the rotor speed.

31. In this design, two kinds of sealing technology are used to fulfill the requirement that the very low frequency projector can be worked at a large volume displacement.

32. This breed is also known for his ability to foretell storms and avalanches, perhaps because he may hear very low frequency sounds that are beyond our ability to hear.

33. Expenses for repairing and maintenance were reduced after the low frequency sound wave deashing device was used.

34. The chorus effect modulates the original sound by a sinusoid low frequency oscillator (LFO).

35. For low frequency and logic measurement, any ground connection from scope ground to circuit ground is OK, the probe ground may be left open.

36. We first employed the unsharp masking to adjust the contrast of angiograms, and then removed the consistent component of low frequency in frequency domain by high-pass filtering.

37. Experiments indicate that it can achieve the precision required where tracking a low frequency sinusoidal signal or a low frequency random signal.

38. This falls in the extremely low frequency (ELF) range which includes frequencies up to 300 Hz.

39. Rock wool has good absorption function for medium and low frequency noise and various types of vibration noise. This will be very favorable for reducing noise and improving work environment.

40. On the contrary, the SCS summer monsoon tends to be weak when the inactive state is dominant for the low frequency oscillation.

41. Existed low frequency quasi-static characteristics are derived in more detail. It is noted that two expressions are identical.

42. Result Wavelet scalogram of blood flow ultrasonic signal had a higher distinguishability than STFT spectrogram in the low frequency portion, but had poorer decussation terms than spectrogram.

43. A combinational electric system stable machinery GPSS is designed to fight back low frequency oscillation and to improve electric system stability.

44. In low frequency band(), the attenuation rate of guided electromagnetic waves are very low and increases slowly as frequency.

45. According to mechanism of low frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is carried out as well.

46. In one embodiment, the peripheral device includes three motors: a high torque motor, a low frequency rumble motor and a high frequency rumble motor.

47. Passive hydraulic mounts can provide a better performance than electrometric mounts especially in the low frequency range.

48. To eliminate the disturbance of the low frequency in industrial field, the arithmetic average defended pulse_disturb of twice-numeric filter, is adopted.

49. E. g. Low Frequency Filter, Blocking of DC , By-pass and coupling circuit.

50. Although the passive UHF tags than low frequency labels are more susceptible to RF interference.

51. Methods : 1. Using acupuncture therapy. ultrasonic therapy and low frequency impulse electrotherapy to treat vertebrobasilar insufficiency vertigo separately.

52. This provides a nice low frequency "throbbing" when the system is at low load personifying the sedentary state satisfyingly.

53. A circuit network is used to further compensate the low frequency characteristics and a novel type of inertial extremely low frequency transducer is obtained.

54. In 1988,[/low frequency.html] the low frequency eddies over middle and high latitudes propagate southward to the South China Sea although the wave train is not so active as in 1985.

55. C3 is a low frequency roll - off capacitor in the feedback network and prevents offset voltage and offset current errors from being multiplied by amplifier gain.

56. But the extremely low frequency (ELF) magnetic fields generated by such cables may cause disturbances to nearby electronic apparatus and may even affect the human health.

57. This paper deals with a digital speech communicator of very low frequency and low bit digital communication based on software ratio, which uses the technique of QPSK and FEC coding.

58. The KM-4 is a dynamic kick drum microphone with a neodymium capsule designed to provide a deep and powerful low frequency response.

59. Wharfedale's MX Series passive subwoofers are ideal for adding massive low end to the MX Series two-way loudspeakers – or any existing sound system in need of extended low frequency response.

60. Pressure difference and Cd concentration fluctuation may cause the noise to increase many times with the latter mainly enhancing the noise in the low frequency range.

61. How to computing low frequency sound transfer function from source to receiver in enclosed room has become key problem in small enclosed room auralization.

62. In order to improve resolution of step motor control system and eliminate the mechanical resonance caused by low frequency, a step motor control system based on micro-step technology was presented.

63. This makes achieving negative permeability under extremely low frequency as well as the permeability switching between positive and negative value rapidly through a magnetic field pulse into possible.

64. The modulator quantizes the input signal and move the low frequency inband quantization noise to high frequency.

65. The theoretical analyses predict that the drift wave is the most dangerois low frequency instability in the hot electron plasma.

66. Compared with traditional bearing fault diagnosis method, the approach proposed in this paper can detect the low frequency modulated components from high frequency band.

67. To some larger cable mass, larger cable tension, lower site of dampers, larger excited loads, more complex frequency spectrum and low frequency, the stronger MR damper is need.

68. The low frequency radiation of common mode current is proportional to current length.

69. It is demonstrated that direct drive electro-hydraulic servo system can replace the traditional electro-hydraulic servo system in the low frequency response.

70. Conclusions: Although fasting hypoglycemia is characteristic of patients with insulinoma, postprandial symptoms have been reported with increasing, albeit low frequency.

71. The very low frequency electromagnetic method(VLF-EM) has such advantages as portable instrument, simple method, economical and high efficiency.

72. The current situation, present questions, future research direction of effects and application of extremely low frequency electromagnetic field on human health are introduced in this paper.

73. The coupled circuit method is used to calculate resistances and inductances in the low frequency range.

74. The attenuation factor of longitudinal wave was changing linearly, whereas the attenuation factor of the slow shear wave kept nearly constant with a low frequency on the exploration seismic band.

75. As this accelerometer is aiming to detect gravity gradient signal with low frequency in space, its response to lower frequency excitation is of special interests in here.

76. Objectives To investigate intensity of extremely low frequency magnetic field (ELFMF) emitted from cathode-ray tubes (CRT) of monitors in various directions and to find ways to avoid its influence.

77. If it is a low frequency sound(), it is processed as an analog signal.

78. Conclusion: the permittivity at low frequency is expected encourage the kinetic approach to the study of rouleaux , which has been theoretic basis to measuring erythrocyte sedimentation rate.

79. To achieve FFTS in tradition, the transmission system terminal should have Frequency Multiplication Transformer (FMT) to convert low frequency power to 50 HZ power.

80. The main spectral components are distinguished in the heart rate variability spectrum: ultra low frequency(ULF), very low frequency(VLF), low frequency(LF), high frequency(HF) components .

81. In low frequency range, the approximate solution of the specific acoustic resistance is derived.

82. Experimental results show that low frequency pulse compression and channel match method can be used in shallow water sound channel to improve the SNR.

83. Thus the observed regularity effect is partly due to the same initial consonant and partly due to the same rhyme shared by low frequency characters and their phonetic.

84. As the water content decreases, the semicircle of the complex plane at the middle and low frequency range will split. It is the result of the change of the capillary structure of the mortar specimen.

84. try its best to gather and build good sentences.

85. In this paper, the relationship between the low frequency drift wave and the empirical law of anomalous transport in Tokamak the pseudo-classical diffusion is discussed.

86. Note: Fast gating of sustained low frequency signals can result in " chattering. "

87. A ported enclosure will generally have a better low frequency extension for a given response shape (alignment) but would require a larger enclosure.

88. These low frequency spectrum lines are basically the harmonics of the rotor shaft frequency and the blade-passing frequency.

89. The wavelet coefficient of the original image is got through wavelet transform, and the low frequency coefficient is seen as a subimage.

90. Objective To investigate the relationship between the resonant frequency and low frequency conductive hearing loss.

91. Because the low frequency area of one image can be modeled as a stationary stochastic process, the LMS algorithm could be adopted.

92. To realize low frequency drift in oscillator circuits, constant temperature controlled circuit for temperature compensation is adopted.

93. Therefore the low frequency of original record can only be used for dynamic analysis.

94. The wide accumulating azimuth angle is one of the main characteristics of low frequency UWB SAR, so the effect of the antenna pattern on the system performance cannot be neglected.

95. The distributions of the values of fluctuating pressure conform to the law of normal distribution; and the dominant frequency is low frequency.

96. Fault sensitive feature is abstracted from high and low frequency of fault residual signal, by which sensor fault time, fault reason, fault degree can be diagnosed.

97. This paper briefly discusses very low frequency ( VLF ) electromagnetic technique and takes Shancheng gold mine for example.

98. The purpose of this review is to help people having a right attitude toward the health effects of expo-sure to extremely low frequency (ELF) electromagnetic fields.

99. A all-pass with constant time delay based on Bessel filter is Put forward at the same time, its amplitude response is constant , there are constant relay time within the scope of low frequency.

100. Second , the noise of double balanced mixer was analyzed, which involved analysis of low frequency flicker noise and high frequency thermal noise.

101. During the radiometric calibration of the low frequency UWB SAR system, the scattering model of the calibrators should be regarded as the low frequency resonance scattering.

102. Temporal evolution of the low frequency electrostatic perturbations in an unmagnetized plasma with strong shear flow is investigated.

103. In this paper, the measurement methods for three kinds of parameters of low frequency noise generator are described.

104. These conclusions have provided the theory instruction and the method for the boiler water tubes low frequency turbulent low examination sensor probe head designing and the actual examination work.

105. It will give patients treatment by means of the amplified amplitude modulating wave current that can be obtained form medium frequency amplitude modulated by the low frequency pulse signal.

106. The selection of the insulator applied for a power very low frequency transmitting antenna were studied.

107. An external pop protection screen may be necessary when close- miking vocalists. The use of a low frequency cutoff filter may also be effective.

108. Then, the radiation efficiency at low frequency and frequency response at high frequency in fluid are computed respectively by both SYSNOISE software and AUTOSEA software.

109. The results show that in expressing modalization, the median value and the low value are the main choices made by medical research article writers and the high value constitutes a low frequency.

110. Extremely low frequency ( ELF)refers to an electromagnetic field having a frequency much lower than the frequencies of signals typically used in communications.

111. A new method for measuring the total harmonic distortion of ultra low frequency signa1 by means of FFT algorithm is presented and the measuring error is analysed in this paper.

112. Conclusion Extremely low frequency electromagnetic field conspicuously restrained the growth status of tumor cells, and some tumor cells could be induced to apoptosis by EMF.

113. This lot covers an advanced communication system that can transmit or receive audio data by modulating low frequency magnetostatic signals.

114. The direction of the low frequency current with maximum frequency was also WSW.

114. try its best to gather and build good sentences.

115. The SI-18BX is a straight forward, no nonsense 18-inch bass reflex subwoofer with exceptional low frequency response.

116. It can reach control object quickly without vibration, so is extremely suitable for industrial control such as machine tool of low frequency response.

117. The design principle is described for low frequency integrated operational amplifier XD1531 with low noise.

118. Existing predominantly, in the Very Low Frequency part of the radio spectrum that corresponds with the audio frequency range, we can experience this activity as audible sound.

119. Objective:To compare the effectiveness of low frequency electric point stimulation with huperzine in the treatment of memory and cognitive obstacle after the brain traumatism.

120. Low Frequency Oscillator waveform, including sine, triangle, square, random, and sawtooth.

121. The shape of the first radiation mode corresponds to the volume velocity of the plate at the low frequency.

122. This paper briefly discusses the very low frequency(VLF) electromagnetic technique and takes Shancheng gold mine for example.

123. The selection of the insulator applied for a large power very low frequency transmitting antenna were studied.

124. Compartment of clinical observation of treatment of anklebone wrench and anklebone contuse from low frequency all and half wave magnetic field.

125. Niobium oxide optical thin films have been prepared by low frequency reactive magnetron sputtering system.

126. The enhanced gradient operator was designed to stand out the edge of image and retain the low frequency information.

127. A novel ultra - low frequency vibration isolator is established.

128. Traditional grid - connected inverter employs low frequency output isolation transformer . It increases weight and cost.

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