摘要
目的 通过研究早期病理嗓音的相对信噪比变化 ,寻找检测早期喉疾病的方法。方法 应用小波变换对早期病理嗓音信号进行多重分解 ,提取和放大频谱的高端噪声。结果 病态嗓音和正常嗓音的频谱高端相对信噪比存在显著差异。
Objective To detect laryngeal diseases early by studying the relative signal-to-noise ratio changes in the early pathologic voice. Methods The noise on high frequency domain was obtained and magnified after the pathologic voice signal was decomposed on multiple levels by means of the wavelet transform. Results The relative signal-to-noise ratio of the pathologic voice on high frequency differed significantly from that of the normal voice.Conclusion The pathologic voice on high frequency domain can be detected easily with the relative signal-to-noise ratio through wavelet transform.
出处
《听力学及言语疾病杂志》
CAS
CSCD
2002年第4期225-226,共2页
Journal of Audiology and Speech Pathology
基金
广西自然科学基金资助项目 (95 14 0 10 )
关键词
喉疾病
嗓音分析
小波变换
相对信噪比
诊断
Voice analysis Wavelet transform Relative signal-to-noise ratio
