Results 221 to 230 of about 47,726 (260)
Some of the next articles are maybe not open access.
Composite Pulse NMR with Phase Distortion
Spectroscopy Letters, 1996Abstract A phase-distorting composite pulse NMR method is described. In the calculation, it only uses function Z22, representing the Wigner rotation matrix elements. The optimum composite pulse sequence parameters were obtained by minimizing the pulse angles and phase distortion effects, this new route could greatly save computing time and efforts ...
Xujie Yang +5 more
openaire +1 more source
Comments on phase intercept distortion
Proceedings of the IEEE, 1968This letter discusses phase intercept distortion as presented a previous letter. It also relates that presentation to another method which some readers may find more familiar.
openaire +1 more source
Nonlinear Distortions in EO Phase Modulators
IEEE Photonics Technology Letters, 2012Nonlinear distortions induced by a voltage-dependent guided-mode field in electro-optical phase modulators are measured and quantified for the first time. Such distortions are shown to impact analog link performance under large-signal modulation.
Robert Tavlykaev +3 more
openaire +1 more source
Low-frequency phase distortion of speech recordings
The Journal of the Acoustical Society of America, 1975Low-frequency phase distortion introduced by good quality audio tape recorders causes large errors in the reproduced waveform. It is advocated that a low-frequency rectangular wave should always precede the speech on recordings intended for wide distribution, so that the correct phase relationships of spectrum components can be identified.
openaire +2 more sources
Tracking distortion as phase modulation
IEEE Transactions on Audio, 1963In support of the urgency for establishing a standard for the vertical tracking angle in stereo disc recording, the phase perturbing character of tracking error distortion is shown, and used to calculate the phase and amplitude intermodulation distortion (PIM and AIM) and harmonic distortion arising from tracking errors. These results are compared with
openaire +1 more source
Distorted Wave Approximation for Scattering Phase-Shifts
Nature, 1960THE elastic scattering wave-function for a short-range potential function V(r) may be written in the form : where j l(x) and n l(x) are the spherical Bessel and Neumann functions respectively, δl is the scattering phase-shift, and g l(r) is a form factor measuring the distortion ...
openaire +2 more sources
Phase intercept distortion in bandpass networks
Proceedings of the IEEE, 1967This letter points out that phase distortion can arise in linear bandpass networks which have linear phase characteristics within the pass-band. In particular, it is shown that even in the case of an ideal bandpass filter having a linear phase response within its passband, signals bandlimited to the filter bandwidth can undergo a distortion upon ...
openaire +1 more source
Phase states in rotationally distorted perovskites
Crystallography Reports, 2002The thermodynamic and crystallochemical conditions determining the types of the rotational phase transitions and their sequence in cubic perovskites are established. It is shown that a decrease in the tolerance factor and a change of the A-cation and its charge stimulates the softening of the rotational-vibrational mode M3. As an example, the compounds
openaire +1 more source
Holographic interferometry under phase distortions
2017An impact of non-stationary phase distortions in transfer section of a holographic interferometer on the quality of formed interference fringes in an interferogram was under investigation. A mathematical model to analyze this influence was proposed. The conclusions based on the model were made about the possibility to observe interference fringes under
Derzhypolska, L.A., Gnatovskiy, O.V.
openaire +1 more source