主观汉语语言清晰度与客观声学参数C_(50)的关系(英文)

Relationship Between Subjective Chinese Speech Intelligibility and Objective Acoustics Parameter C_(50)

采用室内声场仿真软件ODEON获取房间脉冲响应,然后将脉冲响应和消声室录制的语言清晰度测试信号卷积后通过耳机重放,进行汉语语言清晰度主观评价实验,建立和验证了主观汉语语言清晰度得分与客观声学参数C_(50)之间的关系.结果表明:在双耳有差别听闻条件下C_(50)(500～4000Hz)与主观汉语语言清晰度得分之间具有高相关性,采用C_(50)(500～4000Hz)能较好地预测厅堂的主观汉语语言清晰度得分.

The speech intelligibility in rooms is evaluated by using the room impulse responses obtained from the room acoustical simulation software ODEON. The simulated room impulse responses are first convolved with the test word lists of speech intelligibility recorded in an anechoic chamber, and are then reproduced through the earphone. Afterwards, the relationship between the subjective Chinese speech intelligibility scores and the objective acoustical parameter, namely the early-late sound energy ratio （C50, 500 -4 kHz）, is revealed and validated. The results indicate that, under dichotic （binaural） listening condition, there is high correlation between the subjective Chinese speech intelligihility scores and C50 （500 -4 kHz）, and that C50 （500 -4 kHz） can be used to predict the subjective Chinese speech intelligibility in halls.