Speech Transmission Index (STI)

STI is a parameter that describes how easy it is to understand a person speaking in a given acoustic environment. However, to get a good simulation of STI in ODEON, you need to add appropriate background noise.

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Speech Transmission Index, STI

Speech transmission index can be calculated in any edition of ODEON, but this example requires edition Industrial or Combined. The procedure is especially simple in our new version 16.

0:00​ Intro
0:42​ STI calculation procedure
1:32​ Getting background noise from grid response
2:53​ Manually entering background noise
4:30​ NC curves
4:56​ Defining speech source
6:16​ Calculating the job
6:45​ Finding STI result
7:11​ STI application note on ODEON website
7:30​ Outro