AES E-Library

Is STIPa a Robust Measure of Speech Intelligibility Performance?

STIPa (STI for PA systems) is rapidly becoming a popular method of assessing speech intelligibility. It was conceived in order to overcome the problems associated with RaSTI when measuring the potential intelligibility performance of a sound system. The paper reports the results of extensive testing carried out on a variety of sound systems and controlled test environments using measurement equipment from four different manufacturers. It is concluded, that whilst theoretically, STIPa should be able to accurately predict STI, in practice, actually realising this goal may not be quite so straightforward. A number of error mechanisms were found and are reported together with estimations of the typical measurement accuracy and repeatability that can be expected when undertaking STI performance testing.

Author: Mapp, Peter
Affiliation: Peter Mapp Associates
AES Convention:118 (May 2005) Paper Number:6399 Import into BibTeX
Session Subject:Room and Architectural Acoustics; Sound Reinforcement

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 118Papers)   /118/6399.pdf

Start a discussion about this paper!