arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.05396eess.AScs.CLcs.LGcs.SD
收藏

使用检测和通过增强有限数据的口吃语音的ASR

Enhancing ASR for Stuttered Speech with Limited Data Using Detect and Pass

Amazon Alexa(亚马逊Alexa)

Olabanji Shonibare, Xiaosu Tong, Venkatesh Ravichandran

摘要:

据估计,全世界约有7000万人受到称为口吃的言语障碍的影响。随着自动语音识别(ASR)的最新进展,语音助理在我们的日常生活中越来越有用。教育、零售、电信和医疗保健领域的许多技术现在都可以通过语音进行操作。不幸的是,口吃者(PWS)无法获得这些好处。我们提出了一种简单但有效的方法,称为“检测和传递”,使现代ASR系统访问口吃的人在有限的数据设置。该算法使用一个上下文感知分类器训练的有限数量的数据,检测声学帧,包含口吃。为了提高对口吃语音的鲁棒性,这些额外的信息被传递到ASR模型以在推理期间使用。我们的实验表明,在字错误率(WER)在各种国家的最先进的ASR系统的12.18%至71.24%的减少。在改变用于确定低帧速率(LFR)声学特征的每个堆叠帧的口吃的相关后验概率的阈值后,我们能够确定在不同ASR系统中将WER降低23.93%至71.67%的最佳设置。

英文摘要:

It is estimated that around 70 million people worldwide are affected by a speech disorder called stuttering. With recent advances in Automatic Speech Recognition (ASR), voice assistants are increasingly useful in our everyday lives. Many technologies in education, retail, telecommunication and healthcare can now be operated through voice. Unfortunately, these benefits are not accessible for People Who Stutter (PWS). We propose a simple but effective method called 'Detect and Pass' to make modern ASR systems accessible for People Who Stutter in a limited data setting. The algorithm uses a context aware classifier trained on a limited amount of data, to detect acoustic frames that contain stutter. To improve robustness on stuttered speech, this extra information is passed on to the ASR model to be utilized during inference. Our experiments show a reduction of 12.18% to 71.24% in Word Error Rate (WER) across various state of the art ASR systems. Upon varying the threshold of the associated posterior probability of stutter for each stacked frame used in determining low frame rate (LFR) acoustic features, we were able to determine an optimal setting that reduced the WER by 23.93% to 71.67% across different ASR systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑