k-Wave

1. prabhakar.amarana
   

   Member
   Joined: Apr '16
   Posts: 8

   I need to use a linear array transducer to perform simulations.
   How can I specify the center frequency and % bandwidth of the linear array transducer in k-wave?

   Posted 4 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,640

   Hi prabhakar.amarana,

   This is controlled by the input signal you define. For example, you could create a delta pulse, and then filter using a bandpass filter:

   clearvars;
   
   % define delta function
   sig = zeros(1, 100);
   sig(end/2) = 1;
   
   % apply bandpass filter
   sampling_freq = 50e6;
   center_freq = 3e6;
   bandwidth = 100;
   sig_filt = gaussianFilter(sig, sampling_freq, center_freq, bandwidth);
   
   % plot the signal
   figure;
   plot(sig_filt);
   
   % plot the spectrum
   spect(sig_filt, sampling_freq, 'Plot', [true, false]);

   Hope that helps,

   Brad.

   Posted 4 years ago #

3. prabhakar.amarana
   

   Member
   Joined: Apr '16
   Posts: 8

   Dear Brad,
   Thanks for your kind response.

   Posted 4 years ago #

4. YichuanTang
   

   Member
   Joined: Mar '21
   Posts: 2

   Thank you both.

   Posted 10 months ago #

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