I would like to measure STI (speech transmission index) in a 3D environment. I have been thinking about use Unity and reproduce the sound from a speaker and record the sound from the character ears but I would like to find something more profesional. All has to be in 3D because the building is not real any more.
Thank you for your time.
Hello Javier!
To measure the STI in a 3D environment you should have access to acoustic software. CATT acoustics and ODEON can provide acoustic predictions of a room. You can import a 3D model of the room you are interested in and get values for most acoustic parameters.The main obstacle though, is that they are not free. For calculations in an existing room you can use REW or ARTA.
Tim Ziemer Really thank you for your answer. Really useful :) I will consult the reference and all the information provided.
I completely agree with the answers from Tim Ziemer and Xenia Kontogianni . We did a similar investigation on the STI in a virtual room. Check out the poster and let me know if you have any questions.
Article Evaluating the auralization of a small room in a virtual sou...
If you want a cheaper study you can also use I-SIMPA software (which is free) :
http://i-simpa.ifsttar.fr/
Hi Javier, you can also use EASE. As the STI outcome is also dependent on the source loudspeaker, within EASE you will find hundreds of different manufacturers reference files. If you have a particular source speaker you want to check then you also have the ability to measure and model your own using polar response measurements and use that within EASE. https://ease.afmg.eu/
I totally agree with Ziemer and Kontogianni. Good replies!
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