Millimeter wave conduct speech enhancement based on auditory masking properties

✍ Scribed by S. Li; J. Q. Wang; M. Niu; T. Liu; X. J. Jing

• Book ID: 102517054
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 428 KB
• Volume: 50
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.23588

✦ Synopsis

Abstract

Besides air, the millimeter wave (MMW) provides another valuable medium to conduct speech, which may extend the traditional speech detecting method, and provides some exciting possibility for wide applications. However, the MMW conduct speech is in less intelligible and poor audibility since it is corrupted by additive combined noise. This article, therefore, proposed a simple and efficient way to take into account properties of the auditory system in the enhancement processes. The parameters of the spectral subtraction algorithm can be adaptive adjust in a perceptual sense based on a tradeoff between amount of noise reduction, the speech distortion, and the level of musical residual noise. The results from both simulation and listening evaluation suggest that the background noise can be reduced efficiently while the distortion of MMW radar speech remains acceptable, the enhanced speech also sounds more pleasant to human listeners, resulting in improved results over classical subtractive‐type algorithms. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2109–2114, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23588