http://www.k-wave.org/forum/topic/pre-beamforming-rf-data-channel Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 04:33:47 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/pre-beamforming-rf-data-channel#post-4847 Fri, 21 Nov 2014 09:41:00 +0000 gigi 4847@http://www.k-wave.org/forum/ <p>Hi Brad,</p> <p>Thanks a lot.</p> <p>At the next question.</p> <p>Gg </p> http://www.k-wave.org/forum/topic/pre-beamforming-rf-data-channel#post-4846 Thu, 20 Nov 2014 21:07:14 +0000 Bradley Treeby 4846@http://www.k-wave.org/forum/ <p>Hi Gg,</p> <p>If you perform a simulation with an object of the <code>kWaveTransducer</code> class as the sensor, the data that is returned is the raw pressure data for each physical transducer element, i.e., before any beamforming. </p> <p>Within the code, the signal for each physical element is averaged across the grid points that form part of the element. This includes any delays in the elevation direction if there is an elevation focus set. However, this can be turned off by setting <code>elevation_focus_distance</code> to <code>inf</code>. </p> <p>The beamforming on receive is only performed if you call the <code>scan_line</code> method. There are more details in the <a href="http://www.k-wave.org/documentation/example_us_transducer_as_sensor.php">Using An Ultrasound Transducer As A Sensor Example</a>.</p> <p>Hope that helps,</p> <p>Brad. </p> http://www.k-wave.org/forum/topic/pre-beamforming-rf-data-channel#post-4845 Thu, 20 Nov 2014 20:05:22 +0000 gigi 4845@http://www.k-wave.org/forum/ <p>Hi All, Hi Dr. Cox and Dr. Treeby,<br /> I'm would like save pre-beamforming RF data channel,<br /> ie data without delay, of if you want data without any optical lens.<br /> Is it possible to obtain them using transducer class?<br /> If yes how must I set the attributes of the class the are generally used to obtain beamformed signals? It is possible to see an example?</p> <p>One more question, reading the manual I understand that generally delays shifts are performed two times both in input and output, it is true?</p> <p>I hope that my questions are clear.</p> <p>Gg </p>