| Presentation | 2009-10-22 Sound Reproducing System for Easiness of Speech Perception Using Estimate Method of Sound Pressure Level Distribution by Logistic Model Shiho ATSUMI, Kenji FURIHATA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | High volume level output at the loudspeaker can cause the loop to get into an oscillatory mode usually referred to as "howling". Electrodynamic loudspeakers have inherent nonlinearities generating harmonic and inter-modulation distortion. In order to develop the public address system that can reinforce the source signal without any degradation. In this report, the cumulative sound pressure level distribution by logistic model obtained from the results of a study of listeners' preferences for the most suitable levels of news speech by a female announcer (NHK) in an anechoic room (4×5×3m^3) and a lecture room (1,200m^3) was experimentally discussed. From the results, (a) the midpoint M of the logistic function is 64.6dB and the spread parameter S that the slope of the function is 1.4dB based on the data in the anechoic room, and (b) the midpoint M of the logistic functions are from 55.8dB to 66.3dB and the spread parameters S are from 1.3dB to 2.2dB based on the measured 9-point data in the lecture room. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Howling / Easiness of Speech Perception / Logistic Model / Sound Pressure Level Distribution / Median |
| Paper # | EA2009-65 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2009/10/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Sound Reproducing System for Easiness of Speech Perception Using Estimate Method of Sound Pressure Level Distribution by Logistic Model |
| Sub Title (in English) | |
| Keyword(1) | Howling |
| Keyword(2) | Easiness of Speech Perception |
| Keyword(3) | Logistic Model |
| Keyword(4) | Sound Pressure Level Distribution |
| Keyword(5) | Median |
| 1st Author's Name | Shiho ATSUMI |
| 1st Author's Affiliation | Faculty of Engineering, Shinshu University() |
| 2nd Author's Name | Kenji FURIHATA |
| 2nd Author's Affiliation | Faculty of Engineering, Shinshu University |
| Date | 2009-10-22 |
| Paper # | EA2009-65 |
| Volume (vol) | vol.109 |
| Number (no) | 240 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |