在模拟的反响条件下测量声学语音质量的灵敏度
Ahmed M Yousef1, Eric J Hunter1
1Department of Communication Sciences and Disorders, University of Iowa, Iowa City, IA 52242, USA.
Bioengineering (Basel, Switzerland)
|January 8, 2025
概括
房间的反响显著影响了语音分析. 震动,声比率 (HNR) 和α比率在1秒的反响时间以下保持稳定,而闪是敏感的,CPPs始终稳定.
科学领域:
- 声学 声学 在声学方面
- 语音科学 语言科学
- 信号处理 信号处理
背景情况:
- 房间的反响会扭曲语音录音,影响语音质量和声音健康评估的准确性.
- 语音的计算机分析对反响特别敏感,需要了解其对声学参数的影响.
研究的目的:
- 量化模拟房间反响对常见语音质量指标的影响.
- 在不同的反响条件下,评估动,闪,声比率 (HNR),α比率和光滑的顶突出 (CPPs) 的灵敏度和稳定性.
主要方法:
- 使用了来自五位健康女性发言者的持续[a:]元音记录 (舒适和清晰的意图).
- 八个级别的模拟反响 (T20从0.004到1.82秒) 被应用到使用Audacity.使用清洁记录.
- 使用PRAAT软件分析了语音样本,以计算动,闪,HNR,α比率和CPPs.
主要成果:
- 吉特,HNR和α比率在低于1秒的反响时间 (T20) 中表现出稳定性.
- 与舒适风格相比,HNR和动在清晰的声乐风格中表现出更大的稳定性.
- 闪光器对反响高度敏感 (T20为0.53秒),而CPP在所有测试条件下保持稳定.
结论:
- 语音指标对房间的反响表现出不同的敏感性.
- 即使在反响条件下,CPP也是一个可靠的指标,适合控制较少的环境.
- 在反响设置中建议谨慎解释闪,而可以使用动,HNR和α比,同时考虑低于1秒的反响水平.
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