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Calculation Protocol

All details of the calculation can be inspected via the CadnaA-calculation protocol. The protocol displays all emission and immission values, including the attenuation terms for each partial source at every receiver point.

  • First, save the file to a directory on your local drive.
  • Now, open via menu Calculation|Protocol the dialog Calculation Protocol and activate „Write Protocol“ and close the dialog by OK.

  • Restart the calculation via the pocket calculator symbol on the tool bar.

  • Open the calculation protocol via menu Calculation|Protocol, and click the button „Print“.

Note

The protocol file is written to the directory where the CadnaA file was saved to.

  • Select the protocol preview for the receiver (IP1) with and click the button "Preview".

On the protocol for receiver IP1 the point source is displayed:

Protocol at receiver IP1 for the point source

The attenuations due to geometrical divergence (Adiv = 51 dB) and air absorption (Aatm = 0.2 dB) are listed.

In this case, the resulting level Lr corresponds to the sound pressure level at the receiver during each time period Day, Evening and Night (see column „DEN“).