کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7152760 | 1462427 | 2014 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Accuracy of speech transmission index predictions based on the reverberation time and signal-to-noise ratio
ترجمه فارسی عنوان
دقت پیش بینی شاخص انتقال گفتار بر اساس زمان بازتولید و نسبت سیگنال به نویز
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کلمات کلیدی
اندازه گیری های صوتی، آکوستیک اتاق هوش مصنوعی سخنرانی، کیفیت صدا،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
This paper examines the accuracy of the speech transmission index (STI) calculated from the reverberation time (T) and signal-to-noise ratio (LSN) of enclosed spaces. Differences between measured and predicted STIs have been analysed in two rooms (reverberant vs. absorbent), for a wide range of absorption conditions and signal-to-noise ratios (sixteen tests). The STI was measured using maximum length sequence analysis and predictions were calculated using either measured or predicted values of T and LSN, the latter assuming diffuse sound field conditions. The results obtained for all the conditions tested showed that STI predictions based on T and LSN tend to underestimate the STI, with differences between measured and predicted STIs always lower than 0.1 (on a 0.0-1.0 scale), and on average lower than 0.06. According to previous research, these differences are noticeable and therefore non-negligible, as 0.03 is the just noticeable difference in STI. The use of either measured or predicted values of T and LSN provided similar STI predictions (i.e. non-noticeable changes), with differences between predictions that are on average lower than 0.03 for the absorbent room, and lower than 0.01 for the reverberant room.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 81, July 2014, Pages 1-14
Journal: Applied Acoustics - Volume 81, July 2014, Pages 1-14
نویسندگان
Laurent Galbrun, Kivanc Kitapci,