Release Time:2022-06-20  Hits:

Date of Publication: 2014-01-01

Journal: 同济大学学报 自然科学版

Institution: 建筑与艺术学院

Issue: 11

Page Number: 1759-1764

ISSN: 0253-374X

Abstract: The speech transmission index (STI) and speech transmission index for public address system (STIPA) metrics at 12 receivers in 4 rooms, with a total of 48 acoustic conditions, were measured using the direct and indirect method and the measurement results of the two methods were compared, with a particular attention on the influence from the frequency response of the measurement system. The results show that, there is no substantial difference between STI and STIPA metrics; both direct and indirect measurement can be used as an objective rating method for speech intelligibility, as long as the standardised measurement program and measurement system are adopted.

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