http://www.k-wave.org/forum/topic/simulating-reverberation-artifacts Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 00:26:43 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/simulating-reverberation-artifacts#post-8413 Thu, 06 Jan 2022 17:33:32 +0000 bencox 8413@http://www.k-wave.org/forum/ <p>Hi azhorowitz, </p> <p>The reason that reverberation artefacts occur is because of differences in the acoustic properties, so modelling it that way makes sense. If the differences in the material properties are large, eg. PZT to water, or worse air, then you may have to use small grid spacing and timesteps to get accurate quantitative reflection coefficients, if you're worried about that.</p> <p>You could potentially define the source as a velocity source on the boundary between the transducer element, directed towards the medium in front of it.</p> <p>Best wishes<br /> Ben </p> http://www.k-wave.org/forum/topic/simulating-reverberation-artifacts#post-8314 Thu, 23 Sep 2021 20:12:53 +0000 azhorowitz 8314@http://www.k-wave.org/forum/ <p>Hello,</p> <p>Was wondering if someone could give advice on the best way to model reverberation artifacts created by reflections between a transducer and a layer of reflectors in the near field of an ultrasound transducer.</p> <p>Would it make sense to redefine material properties: medium.sound_speed, etc. to model the transmitting/receiving and acoustic absorbing layers of the transducer and then include the time varying pressure sources inside the transmit/receive regions with redefined material properties?</p> <p>Looking at the "Steering Linear Array" example it looks like point pressure sources in K-Wave radiate in a spherical symmetric pattern, so I suppose acoustic absorbing layers would need to be include directly behind the transducer to prevent pulses getting reflected inside the transducer...</p> <p>Thanks!! </p>