WebFeb 28, 2024 · The pure shift yielded by chirp excitation (PSYCHE) method is a promising pure shift method. We propose a method of reconstructing the undersampled PSYCHE spectra based on deep learning to accelerate the spectra acquisition. It only takes 17 s to obtain a high-quality pure shift spectrum. WebThe present study combined a coded excitation technique with a dual-frequency chirp (DFC) excitation method to prevent interference from the nonlinear components of MBs' cavitation. The use of DFC excitation generates a low-frequency (0.4, 0.5, or 0.6 MHz) chirp component as the envelope of the signal-driving MBs' cavitation with a dual ...
Karplus–Strong string synthesis - Wikipedia
WebNov 30, 2014 · The chirp signal triggered by an arbitrary generator is applied to an exciting PZT element to produce Lamb waves travelling in the plate. Lamb waves are received by a receiving PZT element, eventually received signals are obtained by the digital oscilloscope. The chirp excitation signal and response signal are shown in Fig. 6a and b, respectively. WebMar 15, 2024 · Some efficient excitation signals, such as the chirp, non-linear modulation and coding excitation signal, have progressively been proposed [26,27,28]. The entire signal conversion process takes place in the time domain, so the technique can be called temporal pulse compression (TPC). These studies about TPC enhance the strength, … dyld4 config
Lamb Waves Inspection by Using Chirp Signal and Mode Purification
WebOct 3, 2007 · Operational conditions of the laser are found in which these offset and chirp effects are minimal. Absolute frequency calibration at the megahertz level of accuracy is demonstrated on various atomic and molecular resonance lines. ... a Doppler-free two-photon laser excitation study on several lines in the EF1 − X1 (0,0) band of H2 with ... WebJul 3, 2012 · Here chirp excitations are utilized to address the need to both test at multiple frequencies and achieve a high signal-to-noise ratio to minimize acquisition time. A broadband chirp is used to... WebDec 1, 2013 · For this reason, the NLFM chirp with a customized window was used as an excitation signal to perform subharmonic imaging in an ultrasound flow phantom. Results showed that the NLFM waveform with a ... crystals in new mexico