AES E-Library

Computer Simulation Algorithms for Prediction of MTF-STI and Accurate Calculation of Sound Pressure Level

The goal of a sound system design is to achieve good quality reproduced sound. The perception of this quality in quantitative terms depends on the loudness, frequency response, and construction of sound arriving at the listener. These factors are affected by both the acoustical environment and the sound system's performance. For speech signals, the index of quality is speech intelligibility; for music, the index is primarily frequency response and secondarily distortion. This paper shows that accurate predictions of speech intelligibility and sound pressure level must consider both phase and magnitude information for sound arriving at listener. Two prediction algorithms are described and validated by the results of tests made in real rooms. The algorithm to accurately predict MTF-STI is based on the fundamental principle of MTF-STI. The second algorithm, for the accurate calculation of sound pressure level, utilizes a digital filter response and digital signal processing techniques. Both algorithms are suitable for implementation in practical sound system design software for personal computers.

Author: Mochimaru, Akira
Affiliation: Altec Lansing Corporation, Oklahoma City, OK
AES Convention:89 (September 1990) Paper Number:2996 Import into BibTeX
Subject:Modeling of Acoustic Spaces

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 aes11)   /pp8690/pp9009/3079.pdf

Start a discussion about this paper!