噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2014年
2期
75-79
,共5页
声学%声品质%车内噪声%低频成分%主观评价%主观参量模型
聲學%聲品質%車內譟聲%低頻成分%主觀評價%主觀參量模型
성학%성품질%차내조성%저빈성분%주관평개%주관삼량모형
acoustics%sound quality%car interior noise%low frequency components%subjective evaluation%subjective parametric model
车内的低频噪声影响汽车的乘坐舒适性。为此以人工头双耳记录的车内噪声信号为研究对象，通过主观评价试验，并对结果进行分析。提取了影响车内噪声低沉度的特征参量，建立了以1/3倍频程声压级、锐度和粗糙度为变量的低沉度参量特征模型。采用两种不同的主观评价，结果表明，低沉度模型的预测结果与主观评价结果具有很高的相关性。
車內的低頻譟聲影響汽車的乘坐舒適性。為此以人工頭雙耳記錄的車內譟聲信號為研究對象，通過主觀評價試驗，併對結果進行分析。提取瞭影響車內譟聲低沉度的特徵參量，建立瞭以1/3倍頻程聲壓級、銳度和粗糙度為變量的低沉度參量特徵模型。採用兩種不同的主觀評價，結果錶明，低沉度模型的預測結果與主觀評價結果具有很高的相關性。
차내적저빈조성영향기차적승좌서괄성。위차이인공두쌍이기록적차내조성신호위연구대상，통과주관평개시험，병대결과진행분석。제취료영향차내조성저침도적특정삼량，건립료이1/3배빈정성압급、예도화조조도위변량적저침도삼량특정모형。채용량충불동적주관평개，결과표명，저침도모형적예측결과여주관평개결과구유흔고적상관성。
The internal low-frequency noise is an important measure of car’s riding comfort. In this paper, the character of car’s interior noise is studied. The internal noise signals are recorded by using binaural digital head. Results of subjective evaluation of the signals are analyzed. The characteristic parameters related to the low-and-deep noise inside the car are extracted. The characteristic model for low-and-deep noise parameters is established with the 1/3 octave sound pressure level, sharpness and roughness as the variables. It is found that results of perception of this model agree well with those resulted from the subjective evaluations.
