http://www.k-wave.org/forum/topic/how-to-extract-travel-time-from-sensor-data Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 03:46:48 +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-extract-travel-time-from-sensor-data#post-6498 Sun, 24 Jun 2018 19:23:08 +0000 Bradley Treeby 6498@http://www.k-wave.org/forum/ <p>Hi zhuoxiaoyu,</p> <p>There are many ways to do it, as you've found. As this question is outside the scope of k-Wave, all I can suggest is that you search the signal processing literature. One possibility would be to do it spectrally, looking at the phase response for a particular frequency component.</p> <p>Regarding the medium model, you can set a background image to display during the simulation by setting the optional input 'DisplayMask', your_mask. Note, this must be binary (i.e., black and white).</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/how-to-extract-travel-time-from-sensor-data#post-6475 Tue, 29 May 2018 14:23:50 +0000 zhuoxiaoyu 6475@http://www.k-wave.org/forum/ <p>There's one more question.</p> <p>I set a CT image to medium.sound_speed and set 'PlotLayout' to true to display the medium model, but the simulated figure is separate from the medium image.</p> <p>I don't know how to display the medium model in simulation figure, and the colorbar will appear next to the figure.</p> <p>Please give me some advice.</p> <p>Thanks! </p> http://www.k-wave.org/forum/topic/how-to-extract-travel-time-from-sensor-data#post-6474 Tue, 29 May 2018 14:01:00 +0000 zhuoxiaoyu 6474@http://www.k-wave.org/forum/ <p>Hi, dear professor.</p> <p>Suppose I set up a source.p0 and several sensors in a homogeneous medium, and then I can draw the sensor data into a waveform.</p> <p>I wonder how long it takes for sound waves to reach the sensor from source.p0, but I can't set a universal point on the waveform of the sensor to calculate the travel time.</p> <p>Should this point be set at the crest or trough? Or somewhere else? Whenever I change the speed of the medium or the size of the model, this point is modified accordingly. But there is no regular change in this point, and I need to keep trying to get the best position.</p> <p>I'm quite confused about this. Please give me some advice.</p> <p>Thanks a lot! </p>