Speech Transmission Index
Welcome to STIPA.info
This website is dedicated to collecting information, test signals, articles and other online resources about the Speech Transmission Index.
For the moment, its primary use is to serve as a download location for the various test signals described in IEC 60268-16 rev. 5 (2020) annex C.
Download verification test signals
Contribute
This site is maintained by members of the IEC 60268-16 maintenance team. If you would like to contribute, or if you would like us to link to your website, please send an email to STIPA@embeddedacoustics.com.