EAR LEVEL RECORDINGS OF THE LONG-TERM AVERAGE SPECTRUM OF SPEECH
EAR LEVEL RECORDINGS OF THE LONG-TERM AVERAGE SPECTRUM OF SPEECH
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DOI：
10.1097/00003446-199102000-00006
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发表时间：
1991-02-01
期刊：
影响因子：
3.7
通讯作者：
SEEWALD, RC
中科院分区：
文献类型：
--
作者：
CORNELISSE, LE;GAGNE, JP;SEEWALD, RC
长期平均语音频谱（LTASS）是在两个不同的记录位置测量的：说话者正前方 30 厘米处（参考位置），以及说话者耳屏处（耳朵水平位置），针对三组受试者：成年男性、成年女性和儿童。 结果表明，在每个麦克风位置获得的 LTASS 之间的总体电平和频谱存在显着差异。 对于所有三组受试者，与在参考麦克风位置测量的 LTASS 相比，在耳朵水平位置测量的 LTASS 包含更多的低频能量（即低于 1000 Hz）和更少的高频能量（即高于 2500 Hz）。 研究结果表明，目前用于规定助听器增益的算法可能会低估听力受损者自己在 1000 Hz 以下的放大语音产生的感觉水平，并高估说话者自己在 2500 Hz 以上的语音的感觉水平。 讨论了这些研究结果对听力障碍人士放大系统电声特性选择的影响。
The long-term average speech spectrum (LTASS) was measured at two different recording positions: 30 cm directly in front of the talker (reference position), and at the tragus of the talker's ear (ear-level position), for three groups of subjects: adult males, adult females, and children. Results indicated significant differences in the overall level and frequency spectra between the LTASS obtained at each microphone location. For all three groups of subjects the LTASS measured at the ear-level position consisted of more low frequency energy (i.e., below 1000 Hz) and less high frequency energy (i.e., above 2500 Hz) than did the LTASS measured at the reference microphone position. The findings suggest that the algorithms currently used to prescribe hearing aid gain may underestimate the sensation level of a hearing-impaired individual's own amplified speech productions at frequencies below 1000 Hz and overestimate the sensation level of a talker's own speech above 2500 Hz. The implications of these findings concerning selection of the electroacoustic characteristics of an amplification system for hearing-impaired individuals are discussed.