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Some recent column source designs incorporate ‘beam steering', where the phase of each element in the column is varied in order to change the angle at which the major lobe appears. This technique may be used to improve speech intelligibility by boosting the ‘direct-reverberant ratio' of energies received by a segment of an audience within a built environment - a technique which will be explored further in the Module ‘Room Acoustics'.
Investigate beam steering by incorporating a phase difference between the velocities of your pistons in the column model. (In the first instance it is probably best to use a fixed incremental time delay between each successive source - you should experiment). Note the behaviour of the major lobe as the phase difference is varied, and also any changes taking place in the sidelobes. Hint - Kinsler and Frey have something to say regarding beam steering.
The IF-ELSE Statement: The if statement selects whether an action is executed or not. Selecting between the two actions, or selecting from numerous actions, is accomplished by
An environmental consulting firm is conducting a site investigation on an abandoned industrial site that is 200 m by 150 m in size (Fig. 1). A number of piezometers were installed
Objectives In the following exercises, students are required ?rstly to implement code to determine the frequency components present in a signal, and then to extract a desired si
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1. Write a function to threshold your images separating the background from the foreground: Implement the "peakiness" detection algorithm described in class. The output of your
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A band pass FIR filter is required to pass frequencies from 5KHz to 8KHz, using a sample rate of 40K i) Explain how this would map to normalization sampling frequencies in radia
An FIR filter has coefficients b = [ 1.0000 -0.6387 1.0214 0.8210 -0.7470 1.0920 ] (a) Find H(z) for the filter and plot its frequency response (magnitude and phase
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