k-Wave User Forum » Topic: The difference between the kgrid.dt and the maximum temporal frequency in k-Wave

k-Wave User Forum » Topic: The difference between the kgrid.dt and the maximum temporal frequency in k-Wave http://www.k-wave.org/forum/topic/the-difference-between-the-kgriddt-and-the-maximum-temporal-frequency-in-k-wave Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:29:52 +0000 http://bbpress.org/?v=1.0.2 <![CDATA[Search]]> q http://www.k-wave.org/forum/search.php Bradley Treeby on "The difference between the kgrid.dt and the maximum temporal frequency in k-Wave" http://www.k-wave.org/forum/topic/the-difference-between-the-kgriddt-and-the-maximum-temporal-frequency-in-k-wave#post-7187 Tue, 21 Jan 2020 09:32:50 +0000 Bradley Treeby 7187@http://www.k-wave.org/forum/ Hi Neb, The maximum frequency supported by the simulation is given by <code>f_max = c_min / 2 * dx</code>. If you have a point detector, it will have a flat frequency response. You can read more information in the manual. Let me know if something doesn't make sense. Brad NE2019 on "The difference between the kgrid.dt and the maximum temporal frequency in k-Wave" http://www.k-wave.org/forum/topic/the-difference-between-the-kgriddt-and-the-maximum-temporal-frequency-in-k-wave#post-7161 Wed, 01 Jan 2020 10:26:00 +0000 NE2019 7161@http://www.k-wave.org/forum/ Dear Dr.Treeby, I have the same question. I am working on m-file "example_pr_2D_TR_circular_sensor.m", and I need to know the frequency and bandwidth of sensors (a default that they are working). I will appreciate it if you help me to know that. Thanks Neb lirj on "The difference between the kgrid.dt and the maximum temporal frequency in k-Wave" http://www.k-wave.org/forum/topic/the-difference-between-the-kgriddt-and-the-maximum-temporal-frequency-in-k-wave#post-6070 Mon, 24 Jul 2017 03:21:35 +0000 lirj 6070@http://www.k-wave.org/forum/ Hi Dr. Treeby, Thanks for your reply. Lirj Bradley Treeby on "The difference between the kgrid.dt and the maximum temporal frequency in k-Wave" http://www.k-wave.org/forum/topic/the-difference-between-the-kgriddt-and-the-maximum-temporal-frequency-in-k-wave#post-6068 Fri, 21 Jul 2017 14:07:57 +0000 Bradley Treeby 6068@http://www.k-wave.org/forum/ Hi Lirj, f_max is the maximum frequency supported on the spatial grid. This is explained in more detail in Section 3.4 of the user manual - let me know if anything doesn't make sense. The tone burst frequency should be set to the centre frequency of the transducer that you are trying to replicate (e.g., 3 MHz). In general, you should use at least 3 points per wavelength at the highest frequency of interest. Brad. lirj on "The difference between the kgrid.dt and the maximum temporal frequency in k-Wave" http://www.k-wave.org/forum/topic/the-difference-between-the-kgriddt-and-the-maximum-temporal-frequency-in-k-wave#post-6054 Fri, 14 Jul 2017 03:38:48 +0000 lirj 6054@http://www.k-wave.org/forum/ Hi Dr. Treeby and Dr. Cox, I have two questions about the frequencies in k-Wave. (1) what is the difference between the kgrid.dt and the maximum temporal frequency f_max in k-Wave? (2) what is the relationship of the input signal frequence "tone_burst_freq" and the above two parameters in (1)? How to set the "tone_burst_freq" is the most reasonable when we conduct a simulation of ultrasound. We hope you can help us to solve these questions. Thanks! Best regards! Lirj