# Sound waves emitted from a point

**URL:** https://discourse.paraview.org/t/sound-waves-emitted-from-a-point/419
**Category:** ParaView Support
**Created:** [August 12, 2018, 3:51pm UTC](https://discourse.paraview.org/t/sound-waves-emitted-from-a-point/419 "2018-08-12T15:51:21Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![RickF](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/r/9e8a1a/32.png) [@RickF](https://discourse.paraview.org/u/RickF)
#### Post date: [August 12, 2018, 3:51pm UTC](https://discourse.paraview.org/t/sound-waves-emitted-from-a-point/419/1 "2018-08-12T15:51:24Z")

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Hi,

M trying to make a representation of (sound) waves generated in all directions from a point.

Ideally would be transparent to a degree so as to not obscure other object. Can anyone give me a recipe for this.

Thanks…

Rick

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### Author: ![nicolas.vuaille](https://discourse.paraview.org/user_avatar/discourse.paraview.org/nicolas.vuaille/32/5873_2.png) [@nicolas.vuaille](https://discourse.paraview.org/u/nicolas.vuaille)
#### Post date: [August 13, 2018, 1:20pm UTC](https://discourse.paraview.org/t/sound-waves-emitted-from-a-point/419/2 "2018-08-13T13:20:55Z")

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Hi,

I’m not sure to understand what you want. Do you already have data that can be loaded in ParaView ?  
If yes, the ‘Volume’ representation display data with transparency.

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### Author: ![banesullivan](https://discourse.paraview.org/user_avatar/discourse.paraview.org/banesullivan/32/11714_2.png) [@banesullivan](https://discourse.paraview.org/u/banesullivan)
#### Post date: [September 14, 2018, 12:09am UTC](https://discourse.paraview.org/t/sound-waves-emitted-from-a-point/419/3 "2018-09-14T00:09:03Z")

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Hi, I often visualize seismic wavefields in a time-lapse manner just like what you want. My go to is to build a discretized volume for your model space (`nx` by `ny` by `nz`) then use your forward modeling code to produce the values (amplitudes) of your wavefield at various timesteps on that grid so you effectively have a 4D data structure. Then save out your 3D grid as a series (4th/time dimension) of VTK files (`vtkImageData` or your own custom format) and run the animation in ParaView!

Be sure to add contouring filters or use volume rendering to see throughout your data volume.

Here’s a video of what this might look like:

[https://discourse.paraview.org/uploads/default/original/1X/db4ef8c5627b9fa4cffbfc3f3123478351b50abe.mp4](https://discourse.paraview.org/uploads/default/original/1X/db4ef8c5627b9fa4cffbfc3f3123478351b50abe.mp4)

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### Author: ![Napoleon](https://discourse.paraview.org/user_avatar/discourse.paraview.org/napoleon/32/3073_2.png) [@Napoleon](https://discourse.paraview.org/u/Napoleon)
#### Post date: [February 25, 2020, 6:46am UTC](https://discourse.paraview.org/t/sound-waves-emitted-from-a-point/419/4 "2020-02-25T06:46:22Z")

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This looks nice! I was trying to do something similar for seismic wave. Can you provide sample code, especially on how to generate wavefield values? I would really appreciate it!

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [February 25, 2020, 7:12am UTC](https://discourse.paraview.org/t/sound-waves-emitted-from-a-point/419/5 "2020-02-25T07:12:14Z")

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This is done directly in ParaView.