שיטות לניקוי רעשים המבוססות על מסנן וינר רב-ערוצי ממושקל לפי עיוות הדיבור

פרויקט מצטיין

 בפרויקט תמומש שיטה לניקוי רעשים בעזרת מערך מיקרופונים. השיטה מבוססת על תצורת GSC וסינון וינר המשקלל את עיוות הדיבור.

Speech Distortion Weighted Multichannel Wiener Filtering Techniques for Noise Reduction

by Ofer Margalit & Amit Strauss

n many speech communication applications a microphone array is available nowadays, such that multi-microphone speech enhancement techniques can be used instead of single microphone speech enhancement techniques. A well-known multi-microphone speech enhancement technique is the generalized sidelobe canceller (GSC), which is however quite sensitive to signal model errors, such as microphone mismatch. An overview of the GSC and its extension could be found in [1,2,3]. This project discusses a more robust technique called the spatially pre-processed speech distortion weighted multichannel Wiener filter (SP-SDW-MWF) [6], which takes speech distortion due to signal model errors explicitly into account in its design criterion, and which encompasses the standard GSC as a special case. In addition, a novel frequency-domain criterion for the SDW-MWF is presented, from which several – existing and novel – adaptive frequency-domain algorithms can be derived for implementing the SDW-MWF.