There was significant difference with the pre- operative and post-operative voice acoustic parameters(P<0.001).
嗓音声学参数和术前比较，差异有统计学意义（P<0.001）。
参考来源 - 电子喉镜下声带息肉摘除242例疗效分析—《中国医药导报》—2009年第17期—龙源期刊网After eliminating noise, Signal-to-Noise has been greatly improved. Both the first signal of ultrasound which is obviously becoming clear and the graph of signal which is becoming smooth are useful to distill correlation acoustic parameters of the ultrasonic signal.
消噪后信噪比得到了很大提高，信号曲线平滑，有利于提取超声波信号中的相关声学参数。
参考来源 - 早龄期混凝土质量超声检测技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Build up analysis model and optimise the key acoustic parameters for new products.
新产品产品分析模型的建立并优化关键声学参量。
The acoustic parameters and the elastic parameters of PDC were measured and the destructive mechanism was primarily discussed.
通过测量pdc的声学参数和弹性参数，对破坏机理进行了初步探讨。
ConclusionVoice acoustic parameters are of greater value in the diagnosis of chronic laryngitis, vocal nodule and vocal polyp.
结论嗓音声学分析对诊断慢性喉炎、声带小结、声带息肉有较大的价值。
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