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1. AndresMM
   

   Member
   Joined: Feb '16
   Posts: 4

   Hi everyone,

   the most straightforward way to define an acoustic source is to either define an initial pressure or a time-varying pressure.

   Is it possible to define the source by taking into account the displacement of the source (i.e. amplitude of ultrasound transducer vibration)?

   I would assume this is related to the third possibility of source-definition according to the manual; a time-varying velocity. How could the amplitude displacement be "translated" into velocity? For example, let's say a transducer has a vibration amplitude of 10 nm and a frequency of 100 kHz, would this correspond to:

   10 nm * 100e3 (1/s) =

   source.u = 1e6 m/s

   Cheers,
   -A

   Posted 6 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi Andres,

   You can convert displacement to velocity by taking the derivative. There are many numerical approaches you could take to do this, for example, using the gradientFD or gradientSpect functions in k-Wave.

   Brad.

   Posted 6 years ago #

3. keith_murphy
   

   Member
   Joined: Dec '19
   Posts: 1

   Hi Andres,
   Were you able to work this out programatically? I'm interested in doing the same thing but don't have enough of a mathematics background to get it going and was hoping you might be able to help. Thanks

   Keith

   Posted 4 years ago #

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