Hi
I am trying to focus at a point in heterogeneous medium. I used maketransducer function and transducer.beamforming_delays to get delay times but they are similar to what I have in homogenous medium. I guess that k-wave uses a formula that doesn’t take into account the different acoustic sound speeds in medium. Please help me How can I consider the different medium to calculating delay times in my code?
Thanks
Hi maryam,
The simple formula contained within the kWaveTransducer class assumes a homogeneous value of sound speed (set by transducer.sound_speed). There are many ways you can focus in a heterogeneous medium, e.g., using time reversal, time-of-flight phase offsets, average sound speed along a ray path etc etc. Probably the easiest way to implement these is to use source.p_mask and source.p (rather than makeTransducer) so you can directly control the signal used to drive each grid point of the source.
Brad.
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