Get SPL over time results from the .recp file

[funkywok]

I am interested in using i-simpa and SPPS to study some echo-timing-related problem in a room. I notice that the SPL over time is available in the results of punctual receivers, as shown in the fig below. I think these SPL results contains the timing info of the echoes, please correct me if I am wrong.

My silly question is how can I get these data from the "Sound level.recp" file in the folder?

Btw, is it possible today to directly obtain the room impulse response from i-simpa?

Thanks!

[nicolas-f]

how can I get these data from the "Sound level.recp" file in the folder?

You want these data with or without using I-Simpa ? If it is with I-Simpa you can export the table "Sound level" by right clicking on the table then "save to"

The sound source is in single impulse mode so maybe computing the impulse response is possible ?

[funkywok]

Hi Nicolas, thank you for your prompt reply!

For current stage, I can save the data by right-clicking in i-Simpa. Later I might want to extract the data from the recp file for data processing without i-simpa GUI. Is it tricky to do so?

[nicolas-f]

Without the GUI you can use the libsimpa library. Its a C/Python library. You can find an example here:

https://github.com/Ifsttar/I-Simpa/blob/master/src/python_bindings/samples/spps_conversion_resultats.py

The python interpreter is on the I-Simpa install folder

[funkywok]

Noted with thanks! I will look into it