http://www.k-wave.org/forum/topic/how-to-set-the-center-frequency-and-bandwidth-of-ultrasonic-transducer Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 22:02:55 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/how-to-set-the-center-frequency-and-bandwidth-of-ultrasonic-transducer#post-8962 Fri, 24 Nov 2023 17:50:48 +0000 Bradley Treeby 8962@http://www.k-wave.org/forum/ <p>These are equivalent, as you've pointed out. Look at line 1104 in <code>kspaceFirstOrder2D</code> (or search for <code>gaussianFilter</code>). </p> http://www.k-wave.org/forum/topic/how-to-set-the-center-frequency-and-bandwidth-of-ultrasonic-transducer#post-8909 Tue, 12 Sep 2023 03:06:35 +0000 zengqw2021 8909@http://www.k-wave.org/forum/ <p>Dear all,<br /> Does anyone know how to set the center frequency and bandwidth of the transducer in k-wave simulation.<br /> I tried two Settings as follows:<br /> (1) Add the following statement before performing the kspaceFirstOrder2D:<br /> fc = 1e6 ; % [Hz]<br /> Bw = 70 ; % [%]<br /> sensor.frequency_response = [fc Bw] ;<br /> sensor_data = kspaceFirstOrder2D(kgrid, medium, source, sensor, input_args{:});</p> <p> (2) Firstly, kwave simulation is carried out, and then signal processing is carried out：</p> <p> sensor_data = kspaceFirstOrder2D(kgrid, medium, source, sensor, input_args{:});<br /> center_freq = 1.0e6; % [Hz]<br /> bandwidth = 70; % [%]<br /> sensor_data_gaussian = gaussianFilter(sensor_data, fs, center_freq, bandwidth);</p> <p> I find that the final result is the same. Is there anything wrong with it？ </p>