After the end of the first impulse train one or several isolated impulses (or impulse groups) were produced, resulting in a total impulse number of up to 11.
The complex syllables were typically bi-or even tripartite, the main impulse train followed by one or two impulses (or short-impulse groups).
An ideal comb filter is a unit amplitude periodically spaced impulse train
in the frequency domain (Max 1981).
Synthetic seismic signals are generated by convolution of a source wavelet in the form of a Berlage function with an impulse train (Green function) simulating reflections or transitions of the source wavelet along its propagation path.
The following inputs and outputs are plotted: synthetic (or imported) wavelet, impulse train, seismogram (signal convolved with impulse train), seismogram plus noise-see bottom window in Fig.
This signal appears as a negative impulse train with a period of f/2, with a positive maximum at the varactor's turn-on threshold voltage of 0.
Because the output of the frequency divider is an impulse train at a frequency of f/2, the dividers can be cascaded together without any filtering of fundamental suppression circuitry.
bursts in listed range, where a burst is an impulse train with > 6 and < 200 impulses: ([n.
Consequently, we separated out a particular class of impulse trains, those with > 6 but < 200 impulses separated by intervals < 500 ms, as potential predictors of insect infestation, denoting them as bursts.
Consecutive larval impulses separated by < 150 ms were grouped together as impulse trains
and classified according to the profile matched by a majority of the impulses.
The impulses and impulse trains
detected in the recordings were analyzed with customized software, DAVIS (Digitize, Analyze, and Visualize Insect Sounds, Mankin et al.
2008b), it had been determined that particular classes of impulse trains
, denoted as bursts, were good predictors of the presence of insect infestation at a recording site.