Sentence examples for by spectrum analysis from inspiring English sources

The resonance frequencies may be measured by sampling the echo amplitude or by spectrum analysis.

The experiments were conducted in a 50-mm-diameter pipe with the Reynolds numbers from 9.42 × 103 to 8.48 × 104, and vortex frequencies were calculated by spectrum analysis of the differential pressures obtained on the pipe wall.

Then non-coding MIMO radar signals are discriminated by spectrum analysis, and coding MIMO radar signals are recognized by source number estimation algorithm.

The second indicator was obtained by spectrum analysis, measuring the amplitude of the dominant activity.

All of the new compounds have been characterized by spectra analysis.

Fluorescence quenching of 1 μM ERK2 was evaluated by spectra analysis (SpectraMax5, Molecular Devices) utilizing an excitation wavelength of 295 nm and the emission spectra was monitored from 300 to 500 nm in the presence or absence of 25 μM of the indicated test compound.

One of the main contributions of this investigation is the development of a pretreatment signal analysis procedure which subjects the signal to noise cleaning by singular spectrum analysis and then stationarisation by differencing.

The instantaneous amplitudes and instantaneous frequencies that extracted by Hilbert transform are further processed by singular spectrum analysis (SSA).

Limb oscillations were recorded with accelerometers and the signal was analysed in the time domain by variance and in the frequency domain by power spectrum analysis.

The reconstruction was tested for periodicities by power spectrum analysis.

The reduction of difference between boundaries can be attained by frequency spectrum analysis, while in this case study the initial boundary difference was reduced from 99.6%to33.3%3%.